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WALGREEN PAGE 17-1

WALGREEN CO. Model 505

EXTERNAL ANTENNA

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R11 1200 ohm 1 W 11008-122 C12 250 mmf Mica 12010-250 R12 150 ohm 1/2 W 11005-151 C13 .01 mf 400 V 12002-01 C14 .03 mf 400 V 12002-03 C15 20 mf 150 V MISCELLANEOUS C1640mf150V} R-1241-1 C17 40 mf 150 V 12101-40 Part No.

Spk. Speaker COILS AND TRANSFORMERS Dial Glass R-1046 R-1342

Part No. Dial Pointer R-1255-1 L1 Loop R-1237 Diffusion Screen R-1194 L2 Ose. Trans. Coil R-1033 Tuning Shaft R-1160 T1 1st I. F. Trans. R-1025-3 Cabinet R-5011.... T2 2nd I. F. Trans. R-1025-4 Knob R-1032 T3 Output Trans. Assem. R-1040-1

©John F. Rider


-2AGE 17-2 WALGREEN Model 505 WA1.GREEN CO.

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WARWICK PAGE 17-1

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2 WARWICK MODEL 11011 WARWICK MFG. CORP.

DESCRIPTION

Model 11011 is a 4 -tube superheterodyne portable receiver designed for operation on a 117 volt 50-60 cycle, 117 volt DC power supply or from a self-contained battery.

This receiver covers the frequency range from 535 kilocycles to 1600 .kilocycles (K.C.).

The tubes used are: - 1 R5-Mixer, Oscillator 1S5-Detector and first Audio 1U4-I. F. Amplifier 3Q4-Power Output No rectifier tube is required as a Selenium rectifier is used when operating

on A. C. current.

BATTERY CONNECTOR

MODEL HO POWER RATING 15 WATTS

1400 KC

1600 KC

ON-OFF SWITCH 9 1h TUNING SHAFT VOLUME CONTROL

ALIGNMENT PROCEDURE The following alignment procedure is for use only by competent servicemen having the

proper equipment. The alignment should be made with volume control fully on, and the output from the signal

generator as low as possible, to prevent A. V. C. action from interfering with correct alignment. With the output meter connect across the voice coil of the speaker, the output meter reading

for 50 milliwatts is .4 volts using a signal which is, modulated 400 c.p.s. Adjust all trimmers for maximum output. Repeat alignment procedure given below as a

final check. CAUTION: This is an A.C. - D. C. receiver and if alignment is made with the receiver con-

nected to 117 volts A. C. or D. C., it is necessary to isolate the signal generator or the receiver from the line by use of a transformer, or place a .2 M. F. D. condenser in both test leads of

the Signal Generator. Position Dummy Trimmer

of Generator Ant. Generator Adjust- Trimmer Variable Frequency Mfd. Connections ment Function

Fully open 455 KC .1 1R5 Grid (Stator of CIA)

T2 Output I. F.

Fully open 455 KC .1 1R5 Grid (Stator of CIA)

Ti Input I. F.

Fully open 1600 KC .00025 Ant. lead (Stapled to Cabinet)

C1B Oscillator

Tune in signal from generator

1400 KC .00025 Ant. lead (Stapled to Cabinet)

CIA Antenna

*Connect ground lead of signal generator to Common "B." **Connect ground lead of signal generator to ground wire stapled to cabinet.

If it should become necessary to re -adjust the loop antenna loading coil tune in a weak station, between 600 and 650 Kilocycles, and adjust for maximum output.

()John F. Rider


WARWICK MFG. CORP. MODEL 11411.-N

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©John F. Rider


RAGE 17-4 WARWICK

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©John F. Rider



ALIGNMENT PROCEDURE

The following alignment procedure is for use only by competent servicemen having the proper equipment.

The alignment should be made with volume control fully on, and the output from the signal generator as low as possible, to prevent A.V.C. action from interfering with correct alignment.

With the output meter connected across the voice coil of the speaker, the output meter reading for 50 milli -watts is .4 volts using a signal which is modulated 400 c.p.s.

Adjust all trimmers for maximum output. Repeat alignment procedure given below as a final check.

CAUTIONc This is an A.C.-D.C. receiver and when aligning the set it is necessary to isolate the Signal Generator or the Receiver from the line by use of a transformer, or place a .2 MFD. condenser in both test leads of the Signal Generator.

Position Generator Dummy Generator Trimmer Trimmer of Frequency Ant. Connections Adjustment Function

Variable Mfd.

Fully open 455 KC .1 *12SA7 Grid Tl Input I.F. (Stator of C1A)

Fully open 455 KC .1 *12SA7 Grid T2 Output I.F. (Stator of C1A)

Fully open 1630 KC .00025 *12SA7 Grid C1B Oscillator (Stator of C1A)


1.400 KC .00025 *Ant. lead from loop

C1A Antenna

*Connect ground lead of signal generator to chassis.

LINE CORD 1 .FOTO EXTANT.

UON-OFF SWITCH AND

VOLUME CONTROL

LOOP ANTENNA AND BACK

TUNING SHAFT

©John F. Rider


WARWICK PAGE 17-7

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©John F. Rider


8 WARWICK S;ZODr L 11302V -M WARWICK MFG. CORP.

ALIGNMENT PROCEDURE

The following alignment procedure is for use only by competent servicemen having the proper equipment.

The alignment should be made with volume control fully on, and the output from the signal generator as low as possible, to prevent A.V.C. action from interfering with correct alignment.

With the output meter connected across the voice coil of the speaker, the output meter reading for 50 milli -watts is .4 vbIts using a signal which is modulated 400 c.p.s.

Adjust all trimmers for maximum output. Repeat alignment procedure given below as a final check.

CAUTION< This is an A.C.-D.C. receiver and when aligning the set it is necessary to isolate the Signal Generator or the Receiver from the line by use of a transformer, or place a .2 MFD. condenser in both test leads of the Signal Generator.

Position Generator Dummy Generator Trimmer Trimmer cl Frequency Ant. Connections Adjustment Function

Variable MM.

Fully open 455 KC .1 *12SA7 Grid T1 Input I.F. (Stator of CIA)

Fully open 455 KC .1 *12SA7 Grid T2 Output I.F. (Stator of CIA)

Fully open 1630 KC .00025 *12SA7 Grid C1B Oscillator (Stator of CIA)


1.400 KC .00025 *Ant. lead from loop

CIA Antenna

*Connect ground lead of signal generator to chassis.

LINE CORD

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©John F. Rider


ARWICK PAGE 17-9

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10 WARWICK sciteonaliellf

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John F. Rider


WARWICK PAGE 17-11

SPEAKS LEADS

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MODELS 1231OV 12312M

Fig. 2 Tube Positions and Alignment Points

ALIGNMENT PROCEDURE The following alignment procedure is for use only by competent servicemen

having the proper equipment. With an output meter connected across the voice coil cf the speaker, the

output meter reading for V2 watt is 1.25 volts using a signal which is modulated 400 c.p.s. Follow through the procedure as outlined below for proper alignment.

The alignment should be made with volume control fully on, and the output from the signal generator as low as possible, for accurate alignment.

Position of

Band Switch

Generator Freq.

Dummy Ant.

Generator Connections

Trimmer Adjustment

Trimmer Function

Variable Position

Fully Open BC 455 KC .1 MFD 6SA7 Grid Ti T2 I. F. (Stator of C1B)

Fully Open BC 1725 KC .00025 MFD Ant. Terminal on Loop

C1C BC Osc.

Tune in signal from Generator

BC 1500 KC .00025 MFD 'Ant. Terminal on Loop

C1B R. F.

Tune in signal from Generator

BC 1500 KC .00025 MFD 'Ant. Terminal on Loop

CIA BC Ant.

Fully Open SW 18.2 MC 400 ohms 'Ant. Terminal on Loop

C25 SW Osc.

Tune in signal from Geneartor

SW 16 MC 400 ohms 'Ant. Terminal on Loop

C24 SW Ant.

GROUND lead of generator should be attached to the chassis for all adjustments C24 and C25 are located under the chassis For alignment points refer to Figure 2

* Be sure coupling link is in correct position for external antenna operation. See illustration below. Repeat above alignment procedure as a final check.

©John F. Rider


12 ARWICK MODEL 12310141 ARWICK F .CORP. MODEL 12312M

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©John F. Rider


WARWICK PAGE 17-13

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©John F. Rider



DESCRIPTION

Model 12801 is a superheterodyne receiver, designed for use on 105-125 volt 60 cycle AC or DC current

The tubes used are: 12SA7-Oscillator-Mixer 50L6-Power Output 12SQ7-Detector and first Audio 35Z5 --Rectifier

This receiver covers the frequency range from 540 to 1625 KC. The dial scale is calibrated in kilocycles, minus the final zero.

LINE CORD \\ T2 TI®

455 J L KC

ON-OFF SWITCH 8 Ó VOLUME CONTROL e

CIA

1400 KC

ANT. WIRE

CIB 1625 KC

TUNING SHAFT

ALIGNMENT PROCEDURE The following alignment procedure is for use only by competent servicemen having the proper

equipment. The alignment should be made with volume control fully on, and the output from the signal

generator as low as possible, to prevent A.V.C. action from interfering with correct alignment. Adjust all trimmers for maximum output. Repeat alignment procedure given below as a final

check.

CAUTION: This is an A.C.-D.C. receiver and when aligning the set it is necessary to isolate the Signal Generator or the Receiver from the line by use of a transformer, or place a .2 MFD. condenser in both test leads of the Signal Generator.

Position of

Variable Generator Frequency

Dummy Ant. Mid.


Trimmer Adjustment

Trimmer Function

Fully open 455 KC .1 ' 12SÁ7 Grid (Stator of CIA) Ti I.F.

Fully open 1625 KC .00025 'Antenna Wire C1B Oscillator Tune in signal from generator 1400 KC .00025 *Antenna Wire CIA Antenna

'Connect ground lead of signal generator to chassis.

©John F. Rider


WELLS-GARDNER PAGE 17-,

WELL ARDNER & CO. tODEL 35A86-750

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WELLS-GARDNER PAGE 17-3

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-AGE 17-4 WELLS-GARDNER MODEL 35A86-750 WELL - ARDNER O.

REPLACEMENT PARTS LIST NOTICE: There is a model number label on the chassis. This label identifies the radio as to chassis, dial and issue letter. When ordering parts or writ- RESISTORS ing, give ALL information appearing on this label. 885225 R-1, R-7 2.2 megohms 0.5 W Carbon

C84393 R-2, R-4 39 K ohms 1.0 W Carbon B84393 R-3 39 K ohms 0.5 W Carbon B84222 R-5 2200 ohms 0.5 W Carbon

MISCELLANEOUS B85105 R-6 1 megohm 0.5 W Carbon B85473 R-8 47 K ohms 0.5 W Carbon B84153 R-9 15 K ohms 0.5 W Carbon

12A477 8" P.M. Speaker. 36X358 R-10 500 K ohms Volume Control and Line Switch 3A303 Tube Socket-Octal (8 prong) Moulded B85106 R-11 10 megohms 0.5 W Carbon 3A304 Phono Motor Socket B85474 R-12, R-16 470 K ohms 0.5 W Carbon 3A305 Phono Socket-Single Pin Tip B84333 R-13 33 K ohms 0.5 W Carbon 10A467 Knob (Tuning) B84823 R-14 82 K ohms 0.5 W Carbon 10A468 Knob (Off -On Volume) 40X276 R-15 3.0 megohms Tone Control & Radio Phono Switch 10A634 Knob (SW -BC) C84271 R-17 270 ohms 1.0 W Carbon 10A529 Knob (Tone-R.P.) D84182 R-19 1800 ohms 2.0 W Carbon 2A372 Band Change Switch 13X328 Line Cord and Plug Assembly

No. 750 Phono -Console Cabinet DIAL AND DRIVE ASSEMBLY

CAPACITORS 6X21 20X329

Rubber Grommet 1Mtg. Gang Condenser Cond. Cushion Stud f j

C-2 17A164 5-50 mmf Trimmer C-3 17A235 2-24 mmf Trimmer

25X1489 25X1490

Pulley Bracket (Right) Pulley Bracket (Left)

C -6A, C -6B 14A184 Gang Condenser with Drive Pulley C-7 866501 .0005 mf 200 V Tubular

26X485 19X192

()Ave Shaft "C" Washer

C-8 17A155 350-430 mmf Trimmer 25X1491 Pointer Bracket

C-9, C-10 17A109 2.5-35 mmf Dual Trimmer 15X229 Pointer

C-12, C-18 D66403 .04 mf 400 V Tubular 10X56 Drive Cord Assembly

C-13 47X466 68 mmf Moulded 28X113 Drive Cord Tension Spring C-14 46X289 .00475 mf 180 V Tubular C-15, C-16 Part of T-2 (1st I -F Coil Assembly) C-19, C-23 47X463 47 mmf Moulded C-20, C-21 Part of T-3 (2nd I -F Coil Assembly) C -22A, 47X112 50-50 mmf Dual Mica

30X517 4X915 4X916 4X931 58X704

Dial Clamp Escutcheon, Dial (Right) Escutcheon, Dial (Left) Escutcheon Insert Dial Glass

C-228 7A200 Pilot Light Socket Assembly C-24 064403 .04 mf 400 V Tubular 7A32 Pilot Light Bulb No. 51

C-25 D66502 .005 mf 400 V Tubular C-26 D67104 .10 mf 400 V Tubular C-27 D64253 .325 mf 400 V Tubular TRANSFORMERS AND COILS C-28 D66402 .004 mf 400 V Tubular C-29 D66103 .01 mf 400 Tubular T-1 9A1917 "D" Range Antenna Coil Assembly C-3040 40 mf 450 V) T-2 9A1814 1st I -F Coil Assembly C -30B 45X346 40 mf 450 VI. 3 Section Electrolytic T-3 9A1815 2nd I -F Coil Assembly C-30CJ 20 mf 25 V T-4 26A442 "B" Range Loop Antenna C-31 H66402 .004 800 V Tubular T-5 9A1918 Oscillator Coil Assembly C-32 47X467 470 mmf Moulded T-6 53X282 Power Transformer C-33 B66503 .05 mf 200 V Tubular T-7 51X134 Output Transformer _._.

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TUNING KNOB

©John F. Rider



WELLS-GARDNER & CO. MODEL 436A76-670

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dClEI/f6i[Cd lr PAGE 17-6 WELLS-GARDNER MODEI, 436A76-670 WELLS-GARDNER & CO.

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®John F. Rider www.americanradiohistory.com


WELLS-GARDNER & CO. MODEL 436A76-670

REPLACEMENT PARTS LIST NOTICE: There is a Model Number label on the chassis. This label identifies the radio as to chassis, dial and issue letter. When ordering parts or writing, give ALL information appearing on this label.

MISCELLANEOUS PART NO. DESCRIPTION 12A442 6" P.M. Speaker complete with Output Transformer 12A436 8" P.M. Speaker complete with Output Transformer

Cone and Voice Coil Assembly (Specify part number and letters stamped on speaker) Output Transformer (Specify part number and letters stamped on speaker)

3A303 Tube Socket-Octal (8 prong) Molded 3A304 Phono Motor Socket 3A305 Phono Socket-Single Pin Tip 2A360 Band Change Switch 13X328 Line Cord and Plug Assembly 10A614 Knob (Tuning) 10A615 Knob (Volume) 10A616 Knob (Tone-R.P.) 10A617 Knob (SW -BC)

CAPACITORS C-1 47X445 270 mmf Molded C-2 17A164 5-50 mmf Trimmer C-3 17A235 2-12 mmf Trimmer C-4 47X473 47 mmf Silvered Mica C-5 47X474 360 mmf Silvered Mica C -6A, C -6B 14A184 Gang Condenser C-7 B66501 .0005 mf 200 V Tubular C-8 17A155 350-430 mmf Trimmer C-9, C-10 17A109 2.5-35 mmf Dual Trimmer C-11 47X472 40 mmf Silvered Mica C-12, C-18 D66403 .04 mf 400 V Tubular C-13 47X466 68 mmf Molded C-14 47X481 286 mmf Silvered Mica C-15, C-16 Part of T-2 (1st I -F Coil Assem.) C-19, C-23 47X463 47 mmf Molded C-20, C-21 Part of T-3 (2nd I -F Coil Assem.) C-22 47X471 68 mmf Molded C-24 D64403 .04 mf 400 V Tubular C-25 D66502 .005 mf 400 V Tubular C-26 D67104 .10 mf 400 V Tubular C-27 D64253 .025 mf 400 V Tubular C-28 D66402 .004 mf 400 V Tubular C-29 D66103 .01 mf 400 V Tubular C -30A 40 mf 450 V C -30B 45X346 40 mf 450 V Three Section Electrolytic C -30C 20 mf 25 V C-31 F66402 .004 mf 600 V Tubular C-32 47X505 470 mmf Molded C-33 866503 .05 mf 200 V Tubular C-34 47X476 100 mmf Molded C-35 D67204 .2 mf 400 V Tubular


T

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RESISTORS OHMS WATTS

', R-7 885225 2.2 meg. 0.5 Carbon R-2, R-4 C84393 39 K 1.0 Carbon R-3 B84393 39 K 0.5 Carbon R-5 B84222 2200 0.5 Carbon R-6 885105 1 meg. 0.5 Carbon R-8 885473 47 K 0.5 Carbon R-9 884153 15 K 0.5 Carbon R-10 36X357 .5 meg. Volume Control & Switch

R-11 885106 10 meg. 0.5 Carbon R -12,R-16 885474 470 K 0.5 Carbon R-13 884333 33 K 0.5 Carbon R-14 884823 82 K 0.5 Carbon

*R.15 40X277 3 meg. Tone Control & Radio Phono Switch

R-17 C84271 270 1.0 Carbon R-18 43X213 2.0 0.5 Wire -wound R-19 D84182 1800 2.0 Carbon

DIAL AND DRIVE ASSEMBLY 6X21 Rubber Grommet Mtg. Gang Condenser 20X329 Cond. Cushion Stud! 26A443 Dial Bracket Assembly complete with Spacers, Pulleys,

Diffusers and Dial Background less Dial Glass 58X676 Dial Glass 26A444 Idler Bracket Assembly 26X486 Drive Shaft 19X192 "C" Washer (for drive shaft) 15X163 Pointer 10X38 Drive Cord Assembly or 50" Cord 28X113 Drive Cord Tension Spring 7X199 Pilot Light Socket Assembly

No. 47 Pilot Light 4X353 Escutcheon

TRANSFORMERS AND COILS T-1 9A1812 T-2 9A1814 T-3 9A1815 T-4 26A449 T-5 9A1813 T-6 53X282 T-7

"D" Range Antenna Coil Assembly 1st I -F Coil Assembly 2nd I -F Coil Assembly "B" Range Loop Antenna Assembly "B" and "D" Range Oscillator Coil Assembly 117 Volt, 60 Cycle, Standard Power Transformer Output Transformer (See Miscellaneous)

SUBSTITUTE PARTS The following parts are used in some receivers only. Check part numbers on old part before ordering and order part originally used in receiver.

*40X282 Tone Control (Substitute for 40X277) *25X1539 Radio Phono Switch Lever (Use with 40X282) *24161 D.P.D.T. Switch (Use with 40X282)

BAND SWITCH

TONE CONTROL AND PHONO -RADIO SWITCH

TUNING KNOB

CJohn F. Rider


?AGE 17-8 WELLS-GARDNER

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WESTERN AIR PAGE 17-1

©John F. Rider


\\ PAGE 17-2 WESTERN AIR

dclse.,ratrcd Model 581 WESTERN AIR PATROL

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©John F. Rider


WESTERN . AUTO PAGE 17-1 WESTERN AUTO SUPPLY CO. Model -17)-1644

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WESTERN AUTO PAGE 17-3

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-IH° r -Im I . .

v. e z2eg

NN

-%741143z-ai

©John F. Rider


IAC:GG S7G1r%f7e/liati(J.1111

PAGE 17-4 WESTERN AUTO Models D-1747, D-1748 WESTERN AUTO SUPPLY CO.

T21

R. F. AMR 6SK7

Si REA

32

GANGED _ _199C

T1

C2 C5 R2

BAND -SWITCH SHOWN AT i ST POSITION. BROADCAST BAND

540-1.600 KC

C16 CL

R.F. AMR (kSK7 51

REAR

33 PNONO1 RADIO d

52 REAR

2ND.SECT.

29C

AVG ---GANGED -

PHONO.,

T5 R2 RADIO

C5 S3

R21

CG

B+

BAND -SWITCH SHOWN AT 2ND POSITION CLOCKWISE

49 METER BAND 5.96 - 6.19 MC.

R. F. AMP.

6SK7

Rl

C5

--o- 2

REAR 2NO.SECT

R2

C11

R21

8+

C 29C

33 PHONO I

RADIO

ß 5+

T6

R21

BAND -SWITCH SHOWN AT 3RD POSITION CLOCKWISE .

31 METER BAND. 9.1 - 10 MC.

B+

5+

GANGED -1

/ 52 C10

REAR1 131 SECT.

r --GANGED

C6

10

CO

52 , C10

REAR 13T. SECT.

C9

C9

AVC

C12

R4

AV C

Cl?

CONVERTER 65A7

S2 FRO

2ND.SEC

115

CONVERTER 65A7

S2 FRONT -o--.

2ND.5ECT..

C13

REAR 1ST. SECT

R4

AVC

C13

S2 5+ REAR _.d

2NC SECT

-GANGED

T16

114 2ND.SECT.

6

2ND SECT.

32 FRONT

I C14

-GANGED

T11

B+

32. REAR

T16

b

,.. --GANGED

©John F. Rider


te schematics rr WESTERN AUTO PAGE 17-5

WESTERN AUTO SUPPLY CO. Models D-1747, D-1748'

C

T2

AVC

52 REAR

2ND. SECT.

R. F. AMP 6SK7

R2

C29C

C11

BAND -SWITCH SHOWN AT 4TH POSITION CLOCKWISE.

25 METER BAND 11.45 - 12.16MC.

R.F. AMR 6SK7

51 REAR

C4

13

R8 AVC

CS

53 PHONO RADIO b

52 REAR

2 ND. SECT. o

1C29

l R21

=--

R2 $3 PHONO. RADIO

9+

BAND -SWITCH SHOWN AT 5TH POSITION CLOCKWISE .

19 METER BAND 14.94 -15.46 MC.

5+

e+

T10

C9

52 REAP

2ND. EC0

y

r ---GANGED

T6

C6

C10

R

TR

AVC

52 REAP

1ST. SECT.

c

,-GANG ED

T6

C6

T9

CONVERTER 6SA7

E/

R5 S2 REAR

2NND. 9FCT.

C12- S2 FRONT

2ND.SECT GANGED-

C13--' I ie I 113

CONVERTER 6SA7

R4

AVC

C12

jR6 Z

RS

52 FRONT

2ND. SECT o-

C13T

T12

S2 REAR 2ND. SECT. o

©John F. Rider


6 WESTERN AUTO Models D-1747, D-1748 WESTERN AUTO SUPPLY CO.

ALIGNMENT PROCEDURE

MECHANICAL ADJUSTMENT-The core tuning bar (see illustra- ELECTRICAL ADJUSTMENT-To align the set make the follow- tion of iron cores) and dial pointer must be adjusted mechani- ing preliminary adjustments: Set the tone control for treble cally before any electrical alignment is attempted. Rotate the tone; set the volume control at maximum; connect the ground manual tuning control until the core bar is farthest from the post of the signal generator to the radio chassis; connect the coils. For proper adjustment the bar should be approximately output meter across a 3.2 -ohm output load; and allow the re - 1/32 of an inch from the two rod guide angles. ceiver and signal generator to warm up for several minutes.

With the core bar in this position, adjust the dial pointer to Align the set according to the sequence given in the chart. coincide with 1600 kc on the dial scale. The indicated dummy antenna is to be connected in series be-

tween the signal generator output lead and the receiver. Adjust Rotate the cores of each of the three broadcast coils (see illus- the set for maximum output; reduce the input as needed to

tration) until the end of the coil is 1-5/32" from the end of the keep the output near 1.3 volts. coil form. Rotate the three 9 -mc cores until this dimension is Locations of all trimmers and coils are shown elsewhere 1-1/16" for these coils. After these adjustments have been made, in this manual. After adjustment, seal the coil cores with col - the unit can be aligned electrically. lodion or a similar substance (do not use cement).

BAND SIGNAL GENERATOR DIAL ADJUST TO SWITCH SETTING Frequency Coupling

Capacitor Connection to Radio POINTER SETTING

MAXIMUM OUTPUT (in order shown)

Broadcast (for I. F.) 455 kc .1 mf Grid (pin 8)

of converter (6SA7) 1600 kc Trimmers on output and input I. F. cans

Broadcast

1600 kc 200 mmf Antenna lead 1600 kc BC Osc. trimmer C15 BC R. F. trimmer C8 BC Ant. trimmer C2

1400 kc 200 mmf Antenna lead 1400 kc Rotate cores of

BC R. F. coil T7 and BC Ant. coil T1

31 Meter 9.6 mc 400 ohms Antenna lead 9.6 mc 9 mc Osc. trimmer C14 9 mc R. F. trimmer C9 9 mc Ant. trimmer C3

49 Meter 6.1 mc 400 ohms Antenna lead 6.1 mc 6 mc Osc. coil T14

6 mc R. F. coil T10 6 mc Ant. coil T4

25 Meter 11.8 mc 400 ohms Antenna lead 11.8 mc 12 mc Osc. coil T13 12 mc. R. F. coil T8 12 mc. Ant. coil T2

19 Meter 15.2 mc 400 ohms Antenna lead 15.2 mc 15 mc. Osc. coil T12 15 mc R. F. coil T9 15 mc Ant. coil T3

NOTE: Before take from carriage. removing chassis, off escutcheon and pull pointer pointer © PLACE POINTER CARRIAGE AS FAR AS IT WILL

. GO TO THE LEFT. THEN WRAP STRING ONCE AROUND.

1 :t 1 Hili

FINISH 0lß l ,.

AND OFO ,,,,,,--7:\;124'-

I.I

IIII M

COIL ale FORM WHEN WINDING

SECOND TURN ON START PULLEY

PULLEY, LOOP 3 TURNS _ '1 l' ALL MC

COILS

STRING THRU SLOT AS SHOWN. ' ALL BC

COILS / _ _ )II

SET SCR W O TURN TO EXTREME G

COUNTER -CLOCKWISE POSITION OUTPUT I.F. -,

(TRIMMERS ON INPUT I.F. j

(TRIMMERS ON TOP) I I TUNING SHAFT

.---, f

C2 BC ANT, TRIMMER

11137 2.1=1 ANT \TRIMMER

WHEN FINISHED WITH STRINGING, SPRING MUST BE rFROM IDLER AS SHOWN. TO DO THIS

PULLEY. / aO LOOSEN SET SCREW ON

O Ó O e 0 O 0 `" Ia Tu Cv eTa

(Q O US Í%.) T2.

IS)

OS HOLD TUNING SHAFT FIRM IN POSITION INDICATED AND TURN PULLEY BY HAND UNTIL SPRING IS = AWAY FROM IDLER.

Is

© TIGHTEN SET SCREW. NOW SPRING SHOULD TRAVEL BACK AND FORTH WITHOUT TOUCHING THE IDLERS.

0 REPLACE CHASSIS IN CABINET. REPLACE POINTER ON CARRIAGE. TUNE IN

12MC OSC BC RF vMc RF a MC

SMC OSC BC OSC ISMC RF ANT

ISMC OSC 12MC RF 12MC ANY

BMC OSC RUC RF ISMC AN I

STATION OF KNOWN FREQUENCY. HOLD TUNING SHAFT FIRM AND SLIDE POINTER TO CORRECT POSITION ALONG DIAL.

OB GLUE POINTER TO STRING.

Coils and Trimmers Replacement of Drive Cord

©John F. Rider



WESTERN AUTO SUPPLY CO. Models D-1747, D-1748

REPLACEMENT PARTS LIST When ordering parts, specify part number, model number, and series

Ref. No. Part No. Description

REMOVABLE TUNER ASSEMBLY

CAPACITORS * Cl B -8F-10767 .002 mf, 500 volts, 10%, mica C2, C3 124143 Dual, broadcast (67-123 mmf) and

9 me (95-175 mmf) ant. trimmers

470 mmf, 500 volts, 10%, mica .1 mf, 200 volts, +20%-10% .1 mf, 400 volts, +20%-10% 10 mmf, 500 volts, 10% silver

mica Broadcast RF trimmer (120-220

mmf) 9 me RF trimmer (60-110 mmf) 47 mmf, 500 volts, 10%, mica 200 mmf, 500 volts, 3%, silver

mica 9 me oscillator trimmer (7-35 mmf) Broadcast oscillator trimmer

(15-27 mmf)

RESISTORS * R1, R4 1 megohm, 1/2 watt, 20% R2 270 ohms, 1/2 watt, 10% R3 4700 ohms, 1/2 watt, 10% R5 47 ohms, 1/2 watt, 10% R6 27,000 ohms, 1/2 watt, 10% R7, R8 22,000 ohms, 1/2 watt, 20% R9 560 ohms, 1/2 watt, 10% R10 47,000 ohms, 1/2 watt, 20% R11 3.3 megohms, 1/2 watt, 20% R12,S3 Tone control (1 megohm) and

radio -phone switch R13 120,000 ohms, 1/2 watt, 20% R14,R17 100,000 ohms, 1/2 watt, 10% R15 1 megohm, 1/2 watt, 20% R16 4700 ohms, 1/2 watt, 10% R18, R19 470,000 ohms, 1/2 watt, 20% R20 330 ohms, 1 watt, 10% R21 12,500 ohms, 3 watts, 10% R23 15,000 ohms, 1/2 watt, 20% R24, S4 Volume control (500,000 ohms)

and on -off switch R25 C -9B1-35 4.7 megohms, 1/2 watt, 20%

COILS (complete with cores) T1 111195 Broadcast antenna coil T2 111191 12-ntc antenna coil T3 111192 15 -mc antenna coil T4 111189 6 -mc antenna coil T5 111190 9 -mc antenna coil T6 10959 9 -mc RF coil T7 10962 Broadcast RF coil T8 10960 12 -mc RF coil T9 10961 15 -mc RF coil T10 10958 6 -mc RF coil T11 110157 9 -mc oscillator coil T12 110159 15 -mc oscillator coil T13 110158 12 -mc oscillator coil T14 110156 6 -mc oscillator coil T15 110161 Broadcast oscillator coil T16 108177 Input IF coil complete in can

(Range of trimmers: 110-210 mmf) T17 108176 Output IF coil complete in can

(Range of trimmers: 80-140 mmf; TI8 B -12C-10234 Output transformer T20 104202B Power transformer

MISCELLANEOUS

C4, C10 B -8F3-121 C5 C -8D-10771 C6, C11 C -8D-10760 C7 B -8F5-101

C8 A -8G-7205

C9 A -8G-7206 C12 B -8F3-109 C13 B -8F-10763

C14 124145 C15 124144

C -9B1 -3I C -9B 1-55 C -9B1-70 C -9B 1-46 C -9B 1-79 C -9B1-21 C -9B1-59 C -9B1-23 C -9B1-34 125180

C -9B I-87 C -9B1-86 C -9B1-31 C -9B 1-70 C -9B1-29 C -9B2-56 10662 C -9B 1-20 A -10A-10586

Si B -20A-10964 S2 B -20A-10965

121210 121171 117907 117798 120393

131251 B -2C-7245 A -2J-7439

Band switch, antenna Band switch, oscillator and RF Socket, molded, for 6SA7 Socket, laminated, for 6SK7GT Tuning shaft Pinion gear on tuning shaft Spring, intermediate link, under

ends of treadle bar Washer, "C," on slug tuning bar Gear segment Spring clip, for coils


121200 121279 A -15B-11538 121280

121199 121210

121273

SOCKETS Socket, 4 -terminal, for loop antenna Socket, 5 -terminal, for tuner Socket, 4 -terminal, for speaker Socket, I -terminal, for phono pick-

up Socket, 2 -terminal, for phono motor Socket, octal, molded (all tubes

except 6SK7, IF amp.) Socket, octal, laminated (for 6SK7,

IF amplifier)

MISCELLANEOUS T19 C -18B-13181

A -19A-11539 T21 A-14MA-11066-3 T22 A -16A-11113

A -19A-11322 107401 10724 B -6D-10949 10794

107-259 B -2G-10588

A -2J-11041 1121035 B -53A-10989 120377 107266 1121040-14 1121040-41 1121033-14 1121033-41 128-787-14 128-787-41 B -47A-10842 A -2L-11293 112808 131316B 134134

134126

134125

A -25A-7619 B-202-10475 A -2J-7176 A -2J-7627-1 120366 121281 128-505-14 128-505-41

128-504-29 131210

Speaker, 8 -inch, electrodynamic Plug on speaker leads Loop antenna (ribbon only) Choke on loop terminal board Plug on loop antenna leads Phono motor cable assembly Connector, for phono pickup leads Dial scale Dial light, 6-8 volts, type T-44 (2

used) Dial light shield

Dial pointer Pointer spring Pointer carriage String for dial pointer Spring for dial pointer string Line cord and plug (9 feet) Side escutcheon, walnut Side escutcheon, mahogany Bottom escutcheon, walnut Bottom escutcheon, mahogany Knob, walnut, for all controls Knob, mahogany, for all controls Socket assembly for pilot lite Bandswitch link Station call letters Washer "C", for 9 -mc coils Grommet for core mounting (all

broadcast and 9 -mc coils) Grommet for coil mounting (broad-

cast RF and antenna coils) Grommet for coil mounting (broad-

cast oscillator coil) Grommet for all 9 -mc coils Pushrod assembly Cam locking spring Retainer spring Spring, pushrod return Plug, 5 -prong Pushbutton sleeve section, walnut Pushbutton sleeve section, mahog-

any Pushbutton, clear end piece Washer "C", on end plate

MAIN CHASSIS CAPACITORS*

C16 C -8F3-12. 470 mmf, 20% ,mica C17, C19 C -8D-10774 .02 mf, 400 volts, 20% C18 C -8D-10771 .1 mf, 200 volts, +20%- 10% C -20-A 129165B Dual, 50 mmf each section, mica, C20 -B 20% C21 C -8D-10813 .05 mf, 400 volts, 20% C22 C -8D-10935 .005 mf, 600 volts, +40%-15% C23 C -8F3-10 220 mmf, 20%, mica C24 C -8D-10770 .05 mf, 200 volts, 20% C25 C -8D-10788 ,004 mf, 600 volts, 20% C27 C -8D-10992 .03 mf, 200 volts, 20% C28 C -8D -1P'85 .006 mf, 600 volts, 20% C29 -A, 119109 Electrolytic, 15 mf x 450 volts, 15 -B, -C mf x 450 volts, 10 mf x 350 volts C30, C31 C -8J-11321 .02 mf, 600 volts, 20% *The values of the resistors and mica capacitors listed above (except C13) are based on RMA standards. Due to conditions beyond our control some receivers have been shipped with components of pre -standardized values. This receiver will operate equally well with components of either group

©John F. Rider


8 WESTERN AUTO 172-odel D2621 WESTERN AUTO SUPPLY CO.

EXTERNAL ANTENNA

GR

LOOP ANT.

Am .0, T400

1000

SAID

/r\

AVG

TS

IN3GT R. F. AMP.

MAN- I MEG

LEAD OUT OP TOP.

PLT.

r-- ro

MMF

L___

DOT,HOLE OR SLOT

D+ Q

VIEW OF COILS. TERMINAL ENO.

GRID

Q

05 T zoo

IA7GT CONVERTER

MOTES I

ANODE. O VOLTAGE W S MEASEO WITH 1) A 00 OHMS PER VOLT D.C. METER

ETWCEN CHASSIS ANO POSITS DESIGNATED.

CAPACITOR VALUES IN NFU. UNLESS OMERWISE INDICATED.

RESISTOR AND COIL VALUE IN CAMS.

WHORE VALUE OF COLS IS NOT SHOWN, RESISTANCE IS LESS THAN ONE OHM

AU. RESISTORS ARE RATIO AT I/E WATT, A20%

IN5GT IF AMP.

IMEG

iH5GT S H9. DET. A.V. C.

8,156 A00.

SERVICE PARTS LIST MODEL D2621

Order Parts by Model No., Part No., Series and Issue

3Q5GT OUTPUT.

.114e0

00470 r > 16

2.9

T7

PM SPEAKER 3.2 CNMS

0 SI f ON VOLUME T CONTROL

r 1 - \1 A' _. E+SLUE

ARTO ALL \ TOP VIEW FILAMENTS OF PLUS

I.F. 455 KC.

Part No. Name 25566 Bearing (for wood pulleys) 25597 Coil, R. F. (T3) 25598 Coil, Oscillator (T2) 25600 Condenser, Electrolytic 16 Mfd, 150 V. (C4) 25592 Condenser-Tuning, 3 Gang, less Tuning Shaft (Cl, C2, C3)

25367 Control, Volume, with On -Off Switch (R1) 25767 Cord, Dial, complete with Spring and Pointer Coupling 25696 Knob, Tuning or Volume 25609 Loop (TI) 25612 Plug, Battery Cable 4 Prong

Pointer, Dial - See "Track -Pointer" 25336 Pulley-Wood 25615 Scale, Dial 25766 Shaft-Tuning with "spool" pulley 25620 Socket-Tube 25593 Speaker 5" P. M. Dynamic (T7) (less Transformer) 25319 Switch, Economizer (S2) 25788 Track, Pointer, complete with Brackets and Pointer 25621 Transformer I. F. Input (T4) 25622 Transformer I. F. Output (T5) 25594 Transformer-Speaker Output (T6)

Reference Numbers such as (C4) are shown on circuit diagram.

Parts not listed above, may be ordered by part number as shown in the picture and by complete description, send a sketch if possible. Order parts from your local Western Auto Store.

We cannot supply speaker cones. We can replace or repair a damaged speaker for a nominal price if it is returned to our factory, transportation charges prepaid.

©John F. Rider



WESTERN AUTO SUPPLY CO. Model D2621r

'O S. . o W CI+ q ~C G ^ u w sr , cd t c1 7 +> i 40 I Á.

I6 r -1Y

,1 -ii -ri 0 +) G i. G V .--I' r Ea dm ri m + G) r-+ S.....-- OO s O ä .Q * L.$4r-1 ro ri t. r4 g

' d c7 s~ ro V'C3 m m . m P. rn Id t, VO.ri ' CD G) t° O tiCC. í7 r -i t. e â: t4 OLD o O 03 ,4 44, G) -;-, O CD 1-f d ü G Ci, G ri 40 4. 0 i; d) 4 O Iÿ U t4D of p ? 4 G

l, `Cf a R. O r -i V 03 O rt s--- 2; O V } ri Ç'i Q> .i.' rl .O r) O Q) }= 07

m W hp O U 10

tD h l'ù ci +) ÿ 4- ri .E) 0 U G) ß. . ti 3 - i. 0.0 m ri 1) ¡ î> O ri .---1 ri e *

E r O +) rl . ri Q V r -I : + GS

.4',-1

O G) m G R +) O r -t r -i O .-i A p +) { Or) .0 rl 31 Li r p t.

m t~ l G) W ri 4. .ri g t. ï'. i) g -1 G) O m 1 s: /0 f~ V *0 4-'s.-PG) sd 44 G) Ori fi. ,12,«-i +) (n o4) r -i ()

O G) +` ¡ U U a3ri :, N i--+' `: E-. F= asri ri ., Çri ias ri O íY T G) F t;

+) ZS m G O ri 4) .-b4 bi)

O C sr 4.).i .lr .: te += m .á: ri G) U O Gi TS S-. s. O cv Ç1

F, o E-4 Ç. +) lf sr hD +> +> .ri U 40 s. S. ' '4. t, ' CO G) G) G) P.M) ,A ..-i ii ce ta7 h.0 1b ri G) ç rrS ri +' .ú G) r ; f -y G) r i : h G) G ai ry cd U O U co .i . . !. ri +) `vD la, ri ( ti. i G) s. ...) > L. tr S. O N ... W (s. ri ,+ ri id W 4 .h

.-r i. G)00 0 G4 G) O. -i CAD C ei G) fr s. Sr rl .i O d, 4. Fi t) d4-> 4) 4) W W E-4 O i +) 'n r -I mi C) )+) }t Pr7 C14 O

s

' y ,'y O! F `" t _ oá oé ; ; C." E3F á3

i3 i .`! i$ CÑ 's`

Óg (~ W x , p d :: g ., >¢ 0

0 3 ú p. bG cd m a u y m a a o E- ;.ñ W ó: -

.. ó W" W ÿ y> 0 w u-d. rx¢x..O p¢ 74 O i, 0

> óG ó

3 ó. F, d x Ñ ó á á0>°''' 3 th. a. ce

o d v'b Ñz ó¢ c ÿ rA

°° `d á ro W ° Q > ó

1

u ....nu

-° o ; ...)--1 w 6 é OM 0d tla/ ,' : , I~ 1 t V > d o f r i O ^d bi) ,-

,p w/ ú ;4.4

ÿ L. O 1111 -v á)

H r-, w

a N.

..c G. , ; u ó m m .-1 fA ,,, ., oo ' ú / 1 ; ú ú Q- x; v b ' í°. ` ó w oFr CÿÓ. >~er > y b

`1i\u ' " á L.

.+ u 4F . .....a. á 61 º `" a: " á° rC g bo p -p p ,n O C ° 3m' i.,, ~O xuGLa+úII`r,aav 1

\1 -,:i ~ .a

2

N % r Qi , . 6) V1 u fil id .-p 0 E d) p¢ ,.a . z E., , Ob -di-. ó c. 5 2 4.. Li) v o zH o ó á - _- Cg v u Ç w CO N

m 2 o b0 Ó aÔ ti; ro x 4.) ...e u i "b'ú . O U..O aV+ ..0

0 3 C ú ó; H b.Ñ W F+ 3

`b ó m 01 ó a z m

do . v U

Ñ

á m ÿ W w eN

..;; LÚ

.. w N-. x á LO)

b u[ p - N Ó E E- > 3 _-

o"° Q á á z ¢ E- w

> á4.°, ó -OwO ¢E' 1 zb ,4Q-dpwÚ ÿ á ; -d ó U o

°' v áWO z 9 Ñ

ó L. bb %...r

á p N. a I x w

EWE--.,

W W ( á, N+ a5 E- a 3 N oG

ó r~ ó z ¢ ¢ . a , . ÿQt/) p á..á S ~ qk ~

U c4

p z W ú Z a o > s >~ °) o p `° w" O z 0 Ó o" Hi aV .. > f ¢ (~ :~ w m ::

P '1

®John F. Rider


10 WESTERN AUTO Model D2623 WESTERN AUTO SUPPLY CO.

RI, R8 & RIO

R2 R3 R4, R7

ANTENNA

A

L

GROUND

6.9MMF C20

6SK7 15O .05 R. F. AMP. R2 C5

V h7, V `Lt SOMMF

/ V CIA C7

LINE SWITCH

14

C3

5 C4

.05 C6

220K RI

TO. 7 OF ALL TUBES EXCEPT 5Y3GT

6SA7 MIXER

27K R3

CI

50MMF CB -

22K RS

L3 CI

6SK7 I.F. AMP

; I/ Ca b .05 O b G 10

C9

Il< R6

100K R7

05 T CIO

2

6S07 OET. & AUOIU

I MEG

1

M50 MF C12

220 10MEG R8

R9

50K CI I T * r

250M

.05 C13

VOL.CONT; 500K

5Y3GT RECTIFIER

SOCKET VOLTAGES Chassis, Bottom View

All voltages are measured with a 1000 ohm per volt meter on the 150 volt scale, with no signal. To obtain an accurate voltage check the A.C. line voltage must be 117 volts. Where no voltage is shown the voltage is O or cannot be read with this type of voltmeter.

Circuit Part Reference No.

SPEAKER T3

I 2W

16 R14

16

450 450 C19 Cte I.F.

Description

CONDENSERS CiA, C1B, C1C B19-186 Variable condenser C2 200 MMF mica condenser

(on Loop) C3, C4, C9, C16 A16-152 .05 MFD. 200 volt tubular

condenser C5, C6, C10, C13 A16-158 .05 MFD. 400 volt tubular

condenser C7, C8 A15-175 50 MMF mica condenser C11, C14, C15 A16-156 .01 MFD. 400 volt tubular

condenser C12 A15-176 250 MMF. mica condenser C17 A16-153 .005 MFD. 600 volt tubular

condenser C18 A18-279 16 MFD. 450 volt electroly-

tic condenser C19 A18-274 16 MFD. 450 volt electroly-

tic condenser C20 A84-71 6.9 MMF. condenser

RESISTORS A60-667 220K ohm 1/3 watt resis-

tor A60-686 150 ohm. 1/3 watt resistor A60-692 27K ohm 1 watt resistor A60-671 100K ohm 1/2 watt resistor

R23

455 KC.

á PART OF 12

R5 R6 R9

R11

R12 R13 R14

005 C17

560 R12

05 016

.01 C14

VVY 220 K

R10

TONE CONTROL

470K RII .01

C15

A60-659 A60-675 A60-663

A60-662 tor A60-701 A60-700 A60-699

6K6 POWER OI ITPtfT

22K ohm 1/3 watt resistor 1K ohm 1/3 watt resistor 10 megohm 1/3 watt resistor 470K ohm 1/3 watt resis-

560 ohm 1 watt resistor 82K ohm I watt resistor 1000 ohm 2 watt resistor

COILS Li B10-451 Antenna coil L2 B10-452 R. F. coil L3 A10-446 Oscillator coil T1 B10-412 1st I.F. transformer T2 B10-444 2nd I.F. transformer

MISCELLANEOUS T3

T4

Output transformer (Part of Speaker)

C80-223 Power Transformer A69-169 ON-Off Switch A26-123 Tone Control A24-169 Volume Control A84-41 Dial drive shaft and pulley

Assembly B79-341 61/4" P.M. Speaker S84-54 Loop Antenna Assembly

©John F. Rider



WESTERN AUTO SUPPLY CO. Model D2623

Volume control-Maximum: all adjustments. Tone Control-Treble: Full Clockwise Rotation. Connect ground lead of signal generator to radio

chassis.

Connect dummy antenna in series with output lead of signal generator.

Connect output meter across voice coil of speaker.

The following equipment is necessary for proper alignment: Signal generator that will provide the test frequencies as listed. Output meter. Non-metallic screwdriver. Dummy antennas-.1 mfd., 00025 mfd.

Position of

Variable

Generator Frequency

Dummy Ant. mfd.


Trimmer Adjustment

Trimmer Function

Minimum Capacity (Fully Opened)

455 K.C. .1 6SA7 Grid (Stator of C1B

T1 T2 I. F.

Minimum Capacity (Fully Opened)

1725 K.C. .00025 * Ant. Terminal on Loop

C1C Osc.

Tune in signal From Generator

1500 K.C. .00025 *Ant. Terminal on Loop

C1B R. F.

Tune in signai From Generator

1500 K.C. .00025 *Ant. Terminal on Loop CIA Ant.

Be sure coupling link is in correct position for external antenna operation. See illustration below (Fig. 4).

Repeat the above alignment procedure as a final check.

With an output meter connected across the voice coil of the speaker, the output meter reading for 1 watt is 1.25 volts using a signal which is modulated 400 c.p.s.

Chassis, Top View

4":"(3 CONNECT ANTENNA - LINK INLEAD

HERE POSITION FOR EXTERNAL ANTENNA

The tube complement of this receiver consists of the following:

1-6SK7-R.F. Amplifier

Amplifier

1-6SQ7-Det. AVC-Audio 1-6K6-Power Output

1-5Y3-Rectifier GRO L A ANT

BACK & L OP ANTENNA

ON-OFF

ANTENNA and GROUND CONNECTIONS LINK IN THIS POSITIONFOR

RECEPTION WITH LOOP

TUNING SHAFT

CONNECT GROUND WIRE HERE

©John F. Rider


12 WESTERN . AUTO Model D2642 WESTERN AUTO SUPPLY CO.

c12T LI

12SA7 J

J

I.F. 455 KC

L4 2

3

I /

C2 C3

114 C13b T

12SKT

PHONO- RADIO__ 1

-Z -J I Ì II

OFF ON

12607

47 MAZDA

(9CII CI7 y

(-1

s

CHASSIS GROUND 4-

50L6GT

35Z5GT

00 © tI 00 0 12S07 125Á7 125K7 50L6OT

RI3 RII

`TI

álo®

RI2

C9 C9 C9 a.- .-b-c .I

R7

CIO

ALTERNATE FILTER CIRCUIT USED ON EARLIER MODEL.

TO PIN L5 B

TOB+

3525 GT

020 C20 a b

TO B-

NOTE: Connect points "A" and "B" with jumper when testing chassis with phono plug removed.

DIAL STRINGING AND POINTER SETTINGS POINTER EXTREMES

INDICATED NY HOLES IN DIAL BACKGROUND

600 KC. SETTING INDICATED NY HOLE IN

DIAL BACKGROUND

1400 KC. SETTING INDICATED BY HOLE IN

DIAL BACKGROUND

NOTE' DIAL BACKGROUND SNOW. TRANSPARENT TO CLARIFY STRINGING -42.0F CORD NEOUIRED-GANS ISIS CLOSED POSITION

POKER SUPPLY

This receiver is designed to operate ONLY from an AC (Alternating Current) power supply line of 110-120 volts, 60 cycles.

The line plug should be tried both ways and left in the positiòn that gives minimum hum.

OSCILLATOR COIL

((

0II 2 TAP

END

TOTAL 5 OHMS

45 ONMS

2

TRUETONE TUBES USED

12SA7-1st Det. Osc. 50L6GT-Beam Power Output 12Sñ7-I. F. Amplifier 35Z5GT-Rectifier

12SQ7-2nd Det.-A. V. C.-lst Audio

RADIO RECEPTION DURING PHONO

It is normal for strong radio stations to be heard faintly when switched to PHONO, unless the radio dial is tuned between stations. This interference can sometimes be reduced by moving condenser C4 as far from the 12SQ7 socket and as close to the chassis as possible. Also move the I.F. transformer wire" connected to pin 4 or 5 of 12SQ7, as far from condenser C4 and as close to the chassis as possible.

VOLTAGE DATA

35Z5GT

87 A.C.

12SA7

110 AC.

u 0 A.C.

120 B2 A.C.

O 12AC.

94 1.2

22 AC. 'ra , 94

0

01

o

12SK7

0 94

AC.

86

FRONT OF CHASSIS

94 50L6GT

12S07

0 12 AC.

0 X -YOLow(- CONTROL

Bottom View of Chassis, Showing Voltages

All readings made between Tube Socket Terminals and Switch Lug on volume control (Point "X" on drawing). Measured on a 117 Volt A.C. line. Volume control full on. Dial tuned to low frequency end, no signal. Voltages obtained on Vacuum Tube voltmeter. A second voltage reading is shown made with a 1000 ohm - per -volt meter when use of this instrument would result in appreciably lower readings.

©John F. Rider




Step Dummy Antenna

between Radio and Signal Generator

Connect Signal Generator

to

Signal Generator Frequency

1 250 mmfd. Condenser

Gang Condenser Antenna Stator 455 %C.


Gang Condenser Antenna Stator 435 KC.


Gang Condenser Antenna Stator 1630 1LC.

4 No actual connection between set

and generator.

Loop radiator (or place pickup lead from generator close to loop of set to obtain adequate signal).

1400 ICC.

Gang Condenser Setting

Trimmers Adjusted for

Maximum Output

Rotor full open (Plates out of mesh) C and D -2nd. I.F.

Rotor full open (Plates out of mesh) A and B -1st I.F.

Rotor full open (Plates out of mesh) E-Oscillator

Set Gang to tune in

Generator Signal F-Antenna (See Note)

NOTE: Antenna trimmer "F" must be aligned after chassis and loop are mounted in the cabinet. This adjustment can be made by lifting up the top cover and removing the plug button which is directly above trimmer "F."

IMPORTANT-Check to see the ' dial pointer reaches each end of dial scale when Station Selector Control is turned from one end to the other.

Volume control-Maximum for all adjustments.

Connect radio chassis to ground post of eignal generator with a short heavy lead.

Connect output meter across voice coil of speaker. Allow chassis and signal generator to warm up for several minutes.

Use lowest Output setting of Signal Generator capable of producing adequate Output Meter indication and then proceed in the following sequence.

Jt PILOT LIGHT 1147

fl

REPLACEMENT PARTS

BACK OF CHASSIS

Symbol

Cl C2

C3

C4 C5 C6

C7

C8

C9a C9b C9c C10 C11 C12 C13a CI 3b C14 C15 C16 C17 C20a C20b

Symbol

R1

R2

R3

R4

R5

R6

R7

CONDENSERS Description Part No.

Paper, .1 mfd., 200 V. Mica, 50 mmf. ±20% Paper, .02 mfd. 400 V. Paper, .01 mfd. 400 V. Paper, .01 mfd. 400 V. Mica, 250 mmf. ±20% Mica, 500 mmf. ±20% Paper, .02 mfd. 400 V. Elect.,

30 mfd. 150 V. 30 mfd. 150 V.

} 67A8 Elect., 20 mfd. 150 V. JJJ

Paper, .2 mfd. 400 V. Paper, .05 mfd. 400 V. Paper, .005 mfd. 600 V.

6481-30 6587-11 6481-24 64B1-25 6481-25 6587-22 6587-27 6481-24

64A2-1 64B1-22 64B1-12

Gang Condenser (2 Section) 68A2

Mica, 20 mmf. +10% Paper, .01 mfd. 400 V. Paper, .01 mfd. 400 V. Paper, .2 mfd. 400 V. Elect., 30 mfd. 150 V.1. Elect., 50 mfd. 150 V.

RESISTORS Description

22,000 ohm ±10%, 1/2 W. 1 megohm +10%, 1/2 W. 10 megohm ±10%, 1/2 W. 220,000 ohm ±10%, 1/2 W. 470,000 ohm ±10%, 1/2 W. 150 ohm ±10%, 1/2 W. 150,000 ohm ±10%, 1/2 W.

65 B5-5 6481-25 6481-25 64A2- 1

67A3

Part No.

6068-223 60 B8-105 60B8-106 60B8-224 60[38-474 60B8-151 6088-154

RESISTORS (Cont'd) Symbol Description

RB '/2 megohm Volume Control and Switch

R9 47,000 ohm ±10%, 1/2 W. R10 27,000 ohm ±10%, V2 W. R11 150 ohm ±10%, 1 W. R12 1,000 ohm ±10%, 1 W. R13 33 onm ±10%, 1 W.

Part No.

7583-2 60B8-473 6068-273 60828-1 60828-2 60828-3

TRANSFORMERS AND COILS Symbol

L1

L2

L3

14

L5

TI

Description

Antenna, Loop Transformer, 1st I. F.

Transformer, 2nd I. F.

Oscillator Coil Choke Coil (Filter) Transformer, Output *When ordering, specify all

numbers on speaker and transformer.

Part No.

6986 7283 7284 69A5 74A1

PHONOGRAPH PARTS Description Part No.

Centerpost G400Al2 Crystal Cartridge .409A1 Idler Wheel (40783 Motor) G400A23 Idler Wheel (40781 Motor) G400A57 Idler Wheel (407B2 Motor) G400A59 Motor, 60 cycle 115 volt, A.C.

(Tyres 40781 and 407132 also used) 407B3

MISCELLANEOUS Description

Background, Dial

Part No.

X22C3-1 Buttons, Snap 13A1-2-47 Cord, Dial (62") 50A1-3 Drum and Hub Assembly A1012 Escutcheon, On -Off 26A6-1 Escutcheon, Radio -Phono 26A6-2 Grommet, Rubber (Gang Mtg.) 12A1-2 Knob 33A10-2 Pilot Light #47 81A1-8 Pilot Light Socket and Leads 82A2-3 Plug (Phono Leads) 88A3-5 Plug, Button 13A2-1-57 Plug, Alden (Motor Leads) 88A8-1 Plug Shell (Phono Leads) 88A3-4 Pointer 25A13-1 Pulley, Fibre Dial 17A1-3 Scale, Glass Dial 21827-1 Shaft, Tuning 28A1-1 Socket and Leads (Alden) 89A6-1 Socket, Octal Tube 87A10-2 Speaker, 5" PM and Output

Transformer 78813-1 Spring, Dial Cord Tension 19A1-3 Switch, SPDT (Radio -Phono) 77B1-11 Switch, SPST (On -Off) 7781-44 Washer, Flat Insulating 5A1-6 Washer, Offset Insulating 5A2-5 Washer, C 4A4- 1

Washer, Spring 4A6-3-0

©John F. Rider



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©John F. Rider



WESTERN AUT SU ' PLY CO. odel D2661

ALIGNMENT PROCEDURE (Refer to Chassis and Coil Views)

Output meter across 3.2 -ohm output load. Align for maximum output. Reduce input as needed to keep output near 0.4 volts.

Volume control at maximum for all adjustments. Connect ground post of signal generator to radio chassis.

SIGNAL GENERATOR TUNER

SETTING

ADJUST FOR MAXIMUM OUTPUT

(m order shown) Frequency Dumm Antenna Connection to Radio

455 kc .1 mf Grid (top cap) of 1A7GT Iron cores all the way out

Trimmers on output and input I.F. cans

1700 kc .1 mf Grid (top cap) of 1A7GT Iron cores all the way out Oscillator trimmer C3 -B

1700 kc 200 mmf Antenna lead Iron cores all the way out Antenna trimmer C3 -A

1400 kc 200 mmf Antenna lead Turn dial to 1400 kc

Adjust position of antenna coil (see coil view)*

*This adjustment and the previous adjustment are interlockine: therefore repeat the two adjustments alternately for best results.

VIEW OF COIL ASSEMBLY

The antenna coil assembly is movable left or right. When making the adjustment as required in the alignment procedure, move the coil assembly very slowly, either by hand or by pivoting one end of a screwdriver' blade in the hole and engaging the blade in the gear teeth of the coil form.


Cl 129114 C2 100112

C3 -A, -B 124165

C4, C6 C5 C7 C8

C9 C10, C12

C11 C13 C14 C15

10022 12912 1006 C -8D-11270

or 119117 129177 12940 10012 10026 10017 1007

CAPACITORS 300 mmf, 20%, mica .001 mf, 200 volts, 10% Dual trimmer, antenna and oscil-

lator. Range: 84-156 mmf ea. .05 mf, 200 volts, 25% 250 mmf, 20%, mica .25 mf, 200 volts, 25% .5 mf, 200 volts, -20%-10%

10 mf, 150 volts, electrolytic 45 mmf, 5%, ceramicon 100 mmf, 10%, mica .003 mf, 600 volts, 25% .02 mf, 400 volts, 25% .5 mf, 120 volts, -1-50%-10% .005 mf, 600 volts, 25%

RESISTORS* Rl C -9B1-74 10,000 ohms, 1 watt, 10%

R2, R5 C -9B1-34 3.3 megohms, 1 watt, 20% R3 C -9B1-81 39,000 ohms, 1 watt, 10% R4 C -9B1-27 220,000 ohms, % watt, 20% R6 130346 .56 ohm, 3 watt, 10%, wire -

wound R7, Sl 101210 Volume control (1 megohm) and

on -off switch R8 C -9B1-35 4.7 megohms, 1 watt, 20% R9 C -9B1-98 1 megohm, lh watt, 10% R10 C -9B1-101 1.8 megohms, 3 watt, 10% R.11 C -9B1-57 390 ohms, ',z watt, 10%

* The values of the resistors listed above are based on RMA standards. Due to conditions beyond our control some receivers have been shipped with resistors of pre - standardized values. This receiver will operate equally

114213 121210 107364

S2 12588B 115396 112825 112924 112824 B -2M-10383 A -53A-10989 120184 128501-36 128499-36 128499B-36 128638 131193

Tl -A, -B 13613

OUTPUT I.F

INPUT I.F TRIMMERS

GRID CAP

C3 -B 1R I

oMMEsi.

C3 -A TRIMMER

1A7 GT

'TAN' - - ANTENNA

BLACK' GROUND

A VG BATTERY PACK CABLE

ECONOMIZER S W ITON

21i

CHASSIS VIEW


TRANSFORMERS AND COILS Tuning assembly complete, in-

cluding antenna and oscillator coils

T2 108202B Input I.F. coil, complete in can. Range of trimmers: 60-110 mmf (pri.), 40-70 mmf (sec.)

T3 108153C Output I.F. coil, complete in can. Range of trimmers: 40-70 mmf each

T4 10591C Output transformer

MISCELLANEOUS Speaker, 4 -inch, P.M. Tube socket Battery cable assembly Battery economizer switch Tube shield (for 1N5GT) Pointer, for dial Dial scale Crystal for dial scale Snap -in rivets for dial scale Cord for dial pointer drive (1 ft) Spring for drive cord Cabinet Knob, tuning Knob, volume Back for cabinet Snap -in rivets for mounting

back

well with resistors of either group. An illustration of the difference follows:

Pre -standardized value -200,000 ohms, 1/4 watt, 20% RMA value - 220.000 ohms, 1/2 watt, 20 %



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..drAilieddeftemeficAf WESTERN AUTO PAGE 17-1


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©John F. Rider


18 WESTERN AUTO Lode]. D2691 WESTERN AUTO SUPPLY CO.

ALIGNMENT PROCEDURE

The following equipment is necessary to properly align this chassis :

1. A signal generator which will provide an ac- 3. A non-metallic screwdriver. curately calibrated signal at the frequencies listed.

2. An output meter.

4. Dummy antenna : - .1 mfd. - 200 mmf. - 400 ohms

CONNECT TEST OSCILLATOR TO

DUMMY ANTENNA

INPUT SIGNAL FREQUENCY

BAND SET DIAL AT TRIMMERS PURPOSE ,

12SA7GT grid .1 mfd. 455 kc. Broadcast HF end CDEF Align IF 12SA7GT grid .1 mfd. 1620 kc. Broadcast HF end B Set limit of band Ant. terminal 400 ohms 18.3 mc. Short Wave HF end C-9 Set limit of band Ant. terminal 400 ohms . 18.0 mc. Short Wave 18 mc. C-2 Align antenna Ant. terminal 200 mmf. 1400 kc. Broadcast 1400 kc. C-3 Align antenna Ant. terminal 200 mmf. 600 kc. Broadcast 600 kc. C-6 Rock gang and

adjust to max.

NOTE: Recheck alignment of trimmers B and C-3 after adjusting C-6.

Dial Mechanism

Electrical and Mechanical Specifications

Tube Layout

Frequency Range 540-1600 kc., 6-18 mc: V.C. Impedance 3.5 ohms at 400 cycles

Intermediate Frequency 455 kc. Power Output (Undistorted) .75 watt

Power Supply____105-125 volts, 50-60 cycle AC or DC Power Output (Maximum) 1.5 watts

Loudspeaker Dynamic Tuning Drive Ratio 5-1

TUBE COMPLEMENT

1-12SA7GT Oscillator and Mixer tube 1-50L6GT Power Output tube

1-12SK7GT IF Amplifier tube 1-35Z5GT Rectifier tube

1-12SQ7GT Second Detector and First Audio tube

NOTE: The above glass tubes are interchangeable with their metal equivalent.

©John F. Rider



WESTERN AUTO SUPPLY CO. Moue1 D2691

SOCKET VOLTAGES

TUBE POSITION I 2 3 4 5 6 7 8

12SA7GT Oscillator and Mixer 0 37.5 AC 99 99 -4.2 0 24.5 AC 0

12SK7GT IF Amplifier 0 24.5 AC 0 0 0 99 12.5 AC 99

12SQ7GT 2nd Det.-lst Audio 0 0 0 0 0 16 12.5 AC O

50L6GT Power Output 0 85 AC 91.5 99 0 0 37.5 AC 5.9

35Z5GT Rectifier 0 117 AC 112 AC 0 112 AC 0 85 AC 112

0 ® O

0.n 0 gC 0 ©

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NOTE:

3 f110

All switch otherwise Volume Line

DC voltages (-B)

marked. control

Voltage

I

to socket

full 117

L

measured

on.

volts

2 Ci

contact

No AC.

with a 1000 indicated.

signal.

ZAD

ohm -per -volt meter from ON-OFF All voltages are positive DC unless

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SERVICE PARTS Symbol Part No. Description

C-7 BC31B503 Cap., Molded Paper, .05 mfd. C-13 BD210503 Cap., Paper, .05 mfd., 200 v. C-15 BD410103 Cap., Paper, .01 mfd., 400 v. C-14 BD410104 Cap., Paper, .1 mfd., 400 v. C-18, 19 BD410203 Cap., Paper, .02 mfd., 400 v. C-1, 12 BD610202 Cap., Paper, .002 mfd., 600 v. C-10 BM58D512 Cap., Mica, 5100 mmf. C-11 BM78A101 Cap., Mica, 100 mmf. C-17 BM78A221 Cap., Mica, 220 mmf. R-10 BR16C151 Resistor, 150 ohm, ' w. R-2 BR17B151 Resistor, 150 ohm, 1 w. R-3 BR17B156 Resistor, 15 meg., 1/2 w. R-1 BR17B223 Resistor, 22.000 ohm, 1/2 w. R-5 BR17B224 Resistor, 220,000 ohm, 1/2 w. R-6 BR17B335 Resistor, 3.3 meg., 1/2 w. R-8, 9 BR17B474 Resistor, 470,000 ohm, 1/2 w. R-7 BR17B685 Resistor, 6.8 meg., % w.

A-2163 Cable, Drive A-6158 Lamp, Pilot, No. 47, Mazda, 6.3 v.

Order parts not listed by specifying (1) Part Name and (2)

LIST Symbol Part No. Description

C-16 A-8948 Cap., Electrolytic, 40-20 mfd. R-4 B-9051-5 Control, Vol & Sw. 500,010 ohm T-1 B-51010-1 Transformer Assembly, 1st IF T-2 B-51011-1 Transformer Assembly, 2nd IF

C-51014 Speaker, 5 -inch Dynamic A-51160-1 Cord, Power, 6 ft. A-51163 Clip, Spring

C-6 B-51428-5 Capacitor, Padder B-51591 Spring, Dial Bracket

SW -1 B-51764-1 Switch, Band A-51787 Spring, Cable, Music Wire

L-1 B-51828 Coil Assembly, BC & SW Ant. C-2, 3, 9 A-51834 Capacitor, Trimmer, 3 -section L-2 B-51836 Coil Assembly, Osc. C-4 C-51837-1 Capacitor, Variable C-8 B-51839-2 Capacitor, 1 mmf. C-5 B-51839-4 Capacitor, 2.2 mmf.

A-51869 Antenna Reel Assembly

Model Number (include number following dash)

©John F. Rider


20 WESTERN AUTO Models D2718, D2718A WtSTERN AUTO SUPPLY CO.

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11 ddie 1trifici // WESTERN AUTO PAGE 17-21

WESTERN AUTO SUPPLY CO. Models D2718, D2718Á

C 29

BAND -SWITCH SHOWN AT 1 ST POSITION. BROADCAST BAND

540-1600 KC.

-- I T2

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22 WESTERN AUTO Models D2718, D2718Á WESTERN AUTO SUPPLY CO.

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©John F. Rider



WESTERN AUTO SUPPLY CO. Models D2718, D2718A

SHORT WAVE BAND 6 to 18 Megacycles

This band is calibrated in megacycles. The 16, 19, 25, 31 and 49 meter bands, in which the principal international short wave broadcasts will be heard, are located in this band.

These bands will be found on the dial as follows: 16 Meter Band 17.7-17.9 MC 19 Meter Band ....15.1-15.3 MC 25 Meter Band 11.7-11.9 MC 31 Meter Band 9.5- 9.7 MC 49 Meter Band 6- 6.2 MC


i TUNING KNOB

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014-2070

NOTICE: There is a Model Number label on

the chassis. This label identifies the radio as

to chassis, dial and issue letter. When ordering

parts or writing, give ALL information appear-

ing on this label.

MISCELLANEOUS

12A464 4" x 6" P.M. Speaker complets with Mounting Bracket

Cone and Voice Coil Assembly (Specify Part Number and Letter Stamped on Speaker)

3A303 Tube Socket -Octal (8 prong) Molded 2A206 Band Change Switch_. --------- 10A601 Knob, Tuning 10A602 Knob. Volume For Ivory Cabinet 10A603 Knob, Band 10A604 Knob. Tuning I0A605 Knob, Volume . For Brown Cabinet 10A606 Knob, Band (----- 13X546 Line Cord and Plug Assembly....___...._...__.

55X292 Cabinet, Ivory Plastie... ..... _ . .......... __..__...._... 55X296 Cabinet, Brown Plastic 28X292 Snap Button(

t Antenna to Cabinet... - 6" PK Type Z" Screws (Mtg

Antenna te Chassis) 6X53 Rubber Bumpers (Mtd. to Bottom of Cabinet)

TRANSFORMERS AND COILS T-1 9A1443 110" Range Antenna Coil Assembly.... T-2 26A451 "B" Band Loop Antenna Assembly

(For Ivory Cabinet)___..._._ _---

REPLACEMENT PARTS LIST

T-2

T-3 T-4 T-5 T-6 T-7

26A452 "B" Band Loop Antenna Assembly (For Brown Cabinet)

9A1444 "D" Range Oscillator Coil Assembly 9A1442 "8" Band Oscillator Coll Assembly 9A1793 1st 1-F Coll Assembly 9A1794 2nd 1-F Coil Assembly 51X118 Output Transformer

C-1 C-2, C-9 C-3A.C-3B C-4 C-5 C-6 C7 C8 C10 C-II.C-23 C -12,C-15,

C-22 C -13.C-14 C16.C-21 C -17.C-18 C-19 C-20 C-24 C -25.C-28 C-26 C -27A C -27B C -27C )

C-29 C-30 C -3I

CAPACITORS

867102 17A 152 14A 148 46X289 17A174 Part of C3 47 X463 47X466 17A234 806104

1366403 Part of T-5 47 X446 Part of T-6 47X476 866502 47X467 B66103 867253

45X342

067204 067104 17A 123

.001 mf 200 V Tubular._. 2-25 mmf Trimmer Strip Gang Condenser Assembly.... 00475 mf 180 V Tubulár....

2-25 mmf Trimmer..._ (Gang Condenser Assembly)

47 mmf Molded.... 68 mmf Molded.... 300-450 mmf Trimmer .1 mf 200 V Tubular

.04 mf 200 V Tubular.... (Ist I -F Coil Assembly). --- 47 mmf Molded.... (2nd I -F Coll Assembly).... 100 mmf Molded.... 005 mf 200 V Tubular.._

470 mmf Molded.... .01 mf 200 V Tubular.... .025 mf 200 V Tubular.... 50 mf 150 VI 50 mf 150 V } Dry Electrolytic 20 mf 25 V 1

.2 mf 400 V Tubular.... ,1 mf 400 V Tubular.... 1.5-12 mmf Trimmer....

RESISTORS OHMS

R-1 884393 39 K R-2 884472 4700 R -3.R-5 885473 47 K R-4 B84332 3300 R6 885104 100 K R7 885225 2.2 meg R-8 B85475 4.7 meg R-9 36X309 .5 meg

8-10 B84153 15 K RII,R-14 B85474 470 K R-12 884333 33 K R -I3 B84823 82 K R-15 B84181 180 R.16 B85224 220 K R-18 884270 27 R-19 C85152 1500

WATTS 0.5 Carbon ....... 0.5 Carbon _..... 0.5 Carbon 0.5 Carbon .

0.5 Carbon 0.5 Carbon 0.5 Carbon Volume Control and

Switch ......... 0.5 Carbon 0.5 Carbon 0.5 Carbon 0.5 Carbon .

0.5 Carbon 0.5 Carbon 0.5 Carbon 1.0 Carbon

DIAL AND DRIVE ASSEMBLY 20X329 Cond. Cushion'Stud 1 Mtg. Gang Condenser 6X21 Rubber Grommet 1

26A450 Dial Bracket Assembly......._ ......................... 25A1044 Diffuser and Clamp Assembly 58X671 Dial (for Ivory Cabinet) 30X532 Dial Clamps .

15X236 Pointer 25X580 Drive Shaft Bracket 26X465 Driva Shaft 19X192 "C" Washer (For Drive Shaft) 24X564 Drive Shaft Spool 10X51 Drive Cord Assembly 28X113 Drive Cord Tension Serino 7A185 Pilot Light Socket Assembly

N,. 47 Pilot Light Bulb

©John F. Rider


24 WESTERN AUTO Model 1)2145 WESTERN AUTO SUPPLY CO.

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\\ ticheotaticsll WESTERN AUTO PAGE 17-25


BAND -SWITCH SHOWN AT 15T POSITION BROADCAST BAND

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©John F. Rider



ALIGNMENT PROCEDURE Volume Control -Maximum All Adjustments. Connect Radio Chassis to Ground Post of Signal

Generator with a Short Heavy Lead. Allow Chassis and Signal Generator to "Heat

Up" for I minutes.

The following equipment is required for aligning: An All Wove Signal Generator which will provide

an accurately calibrated signal at the test frequencies as listed.

Output Indicating Meter -Non -Metallic Screwdriver. Dummy Antennas -.1 mf., 100 mmt., and 400 ohms.

SIGNAL GENERATOR BAND FREQUENCY CONNECTION DUMMY SWITCH CONDENSER ADJUST TRIMMERS TO

SETTING AT RADIO ANTENNA SETTING SETTING MAXIMUM

I.F. 455 KC 68A7 Pin 8 .1 mf. B Range Turn Rotor to Full Open RANGE

6 1620 KC Antenna Lead 100 mmf. B Range Turn Rotor to Full Open Oscillator Range B (C9) Tune Rotor to Max. Output

1400 KC Antenna Lead 100 mmf. B Range Set Pointer to 1400 KC Ant. Range B (C3) (See Note A)

600 KC Antenna Lead 100 mmf. B Range Tune Rotor to Max. Output Oscillator (CB) Rock Rotor -See Note B

Repeat above steps at 1620 and 600 KC until readjusting the oscillator Range B Trimmer (C9) causes no further improvement of output.

RANGE D 15,600 KC Antenna Lead 400 Ohm D Range Turn Rotor to Full Open Oscillator Range D (C10

14,000 KC Antenna Lead 400 Ohm D Range Tune Rotor to Max. Output Ant. Range D (C2) Rock Rotor -See Note B

LOOP RANGE

I

Reassemble chassis in cabinet.

1400 KC Antenna Lead 100 mmf. B Range Tune Rotor to Max. Output Ant. Range B (C3)

MISCELLANEOUS 12A442 6" P.M. Speaker Complete with Output Transformer

Cone and Voice Coil Assembly (Specify part number ane letters stamped on speaker)

Output Transformer (Specify part number and letters stamped on speaker)

3A303 Tube socket -octal (8 prong) moulded 3A304 Phono motor socket 3A305 Phono socket -single pin tip 10A578 Knob (Tuning) 10A579 Knob (Off -On, Volume) 10A581 Knob (Tone, Radio -Phono) 10A580 Knob (SW -BC) 2A359 Band Change Switch 13X328 Line cord and plug assembly

TRANSFORMERS AND COILS T-1 9A1812 "D" Range Antenna Coil Assembly T-2 9A1814 1st I.F. Coll Assembly T-3 9A1815 2nd I.F. Coil Assembly T-4 26A475 "B" Range Loop Antenna T-5 9A1813 "B" Range and "D" Range Oscillator Coil Assembly T-6 53X282 117 Volt 60 Cycle Standard Power Transformer T-7 Output Transformer (See Miscellaneous)

CAPACITORS C-2 17A164 5-50 mmf Trimmer C-3 17A251 1.5-12 mmf Trimmer C-4 47X473 47 mmf Silvered mica C-5 47X474 360 mmf Silvered mica

Gang Capacitor with drive psilley .0005 mf 200 V Tubular 350-430 mmf Trimmer 2.5-35 mmf Dual Trimmer

Silvered mica 400 V Tubular

Moulded Silvered mica

C-24 C-25 C-26 C-27 C-28

C-29 C -30A C -30B C -30C C-31 C-32 C-33 C-35

C -6A, C-6B14A178 C-7 866501 C-8 17A155 C-9, C-10 17A109 C-11 47X472 40 mmf C-12, C-18 D66403 .04 mf C-13 47X466 68 mmf C-14 47X481 286 mmf C-15, C-16 Part of T-2 (1st I.F.

C-19, C-23 47X463 47 mmf C-20, C-21 Port of T-3 (2nd I.F. C -22A & B

.04 mf

.005 mf

.10 mf .025 mf .004 mf .01 mf 40 mf 40 mf 20 mf 004 mf 470 mmf .05 mf .2 mf

Coil Assem.) Moulded

Coil Assem.) 47X112 50-50mmf Dual Mica 064403 400 V Tubular D66502 .400 V Tubular D67104 400 V rubular D64253 400 V Tubular D66402 400 V Tubular D66103 400 V Tubular

450 V 45X346 450 V 3 Section Electrolytic

25 V F66402 600 V Tubular 47X467 Moulded 866503 200 V Tubular D67204 400 V Tubular

Grid of 2nd I.F. (C20) & (C21) 1st I.F. (C15) & (C16)

Sensitivity (For 0.5 Watt Output, with External Antenna)

B Range 9 Microvolts Average D Range 20 Microvolts Average

C-10 C9 -D-RANGE 05C. "B"RANGE OSC.

C 2L

D"RANGE ANT.

8 600KC

PADDER

2NDI.F1 C -20&C 211

ST IF r C15 & C -I6

-C-3 LOOP ANT, TRIMMER c`+ NOTE A --Set pointer at the 1400 KC mark

on the dial scale. Attach pointer to drive cord.

NOTE B -Turn Rotor back and forth and, adjust the trimmer until the peak of greatest intensity is obtoined.

RESISTORS 885225 R-1, R-7 2.2 megohms 0.5 W Carbon C84393 R-2, R-4 39 K ohms 1.0 W Carbon 884393 R-3 39 K ohms 0.5 W Carbon B84222 R-5 2200 ohms 0.5 W Carbon 885105 R-6 1 megohm 0.5 W Carbon 885473 R-8 47 K ohms 0.5 W Carbon B84153 R-9 15 K ohms 0.5 W Carbon 36X358 R-10 .5 megohm Volume control and line switch 885106 R-11 10 megohms 0.5 W Carbon 885474 R-12, R-16 470 K ohms 0.5 W Carbon B84333 R-13 33 K ohms 0.5 W Carbon B84823 R-14 82 K ohms 0.5 W Carbon 40X276 R-15 3.0 megohms Tone control&Radio- Phono switch C84271 R-17 270 ohms 1.0 W Carbon 43X213 R-18 2.0 ohms 0.5 W Wire wound D84182 R-19 1800 ohms 2.0 W Carbon

DIAL AND DRIVE ASSEMBLY 26A400 Dial bracket assembly complete with dial glass,

background, diffusers, etc

7A202 Pilot light socket assembly

- No. 47 Pilot light 28X113 Drive cord tension spring 10X58 Drive cord assembly 15X150 Pointer

26X485 Drive Shaft 19X192 "C" Washer (for drive shaft)

6X21 Rubber Grommet 20X329 Cond. Cushion Stud } Mtg Gang Capacitor

Power Output

Frequency Ranges B Range 540-1600 Kilocycles D Range 9-15.5 Megacycles

Intermediate Frequency 455 KC Selectivity 40 KC Broad at 1000

Times Signal Speaker 6" PM Dynamic

NOTICE: There is a Model Number label on the chassis. This label identifies the radio as to chassis, dial and issue letter. When ordering parts or writing, give ALL information appearing on this label.

4 Watts Maximum 2.3 Watts, 10%

Harmonics Power Consumption (at 117 Volts AC) .40 Watts (normal)

60 Watts (phono operating)

©John Fe Rider




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WESTINGHOUSE PAGE 17-1

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©John F. Rider For alignent and additional material see Model H-104, pages 15-1, 15-3, 15-4 of hider's Volume XV.


2 WESTINGHOUSE scliencticd

MODELS H -104B, H-105B,WESTINGHOUSE ELECTRIC CORP. H -107B, H -108B, H -110D, H -111B, H -137B, H -138B Chassis V-2102-3

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©John F. Rider



O o

WESTINGHOUSE ELECTRIC CORP.MODHhS H -104B, H -105B, H -107B, H -108B, H -110B, fi -111B, H -137B, H -138B Chassis V-2102-3

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©John F. Rider For additional parts list see Model H-104, page 15-4 of Rider's Volume XV.


4 WESTINGHOUSE MODELS H -104B, H -105B, ESTINOHOUSE ELECTRIC CORP. H -107B, :i -108B, H -110B, H -111B, H -137B, H -138B Chassis V-2102-3, V-2102-5

TERM. BOARD

R24

R2" SNI

R24

R

O o. SPKR SOCKET

-TERM. BOARD

O O -v SPKR. SOCKET o

5 4 2

S- COIL LIBL2 ONO. TO BRKT.

2 2 A DUMMY " . LUB

P.B. COILS

R26 R29

TERM. BOARDS

LIS C5'LI' RS

-F

PHONO. JACK

BOTTOM VIEW OF V-2102-3 CHASSIS

P B. COILS

4 3 2

LIBL2

F -LI (1 1G (S DUMMY o ^ LUG

I REJ. TRAP TRIMMER

R4 053 R6 R31

TERM. BOARDS

TERM. BOARD W s4 -7-

L5- T ON TOP LUB

LB -F

POWER TRANS.

C23

L4 -F

C21

PHONO. MOTOR RECEPTACLE

L4BL3-S BRO.TO BRKT.

TI POWER TRANS.

HOHO. JACK PHONO. MOTOR RECEPTACLE

BOTTOM VIEW OF V-2102-5 CHASSIS

©John F. Rider


WESTINGHOUSE PAGE 17- WESTINGHOUSE ELECTRIC CORP. L OD: LS H -104B, H -105B,

H -107B, H -108B, H -110B H -111B, H -137B, H -138B Chassis V-2102-5

a

ig

®John F. Rider For aliment and additional material see Model H-104, pp. 15-1, 15-3, 15-4 of Rider's Volume XV.


dCil2lllCHtiCd rl ïE 17-6 WESTINGHQUS

ADELS H -104B, H-105B,WESTINGHOUSE ELECTRIC CORP. FI -107B, H -108B, H -110B, H -111B, H -137B, H -138B

Chassis V-2102-5

GND.

REAR SW4

SW ANT. COIL X 7

o. al

L._ _J

RF.AMP .1(1-1

Ì c4 áº 470MMF 68

FRONT SW4

Rf. TRANS CIT NTUNgi w^' 6AMMFr i12 '

GláRl I

C42

BAND -SWITCH SHOWN AT 2ND POSITION CLOCKWISE .

BROADCAST BAND (AUTOMATIC) PUSHBUTTON 1 DEPRESSED

RTER

99v

47V

R31 270 K

C53 220MMF

ISII.F TRANS.

I5n

B + (96V)

AVC

B + (223V)

4TMMF C6IC___ R4 IM

FSRO3T

REAR

C55 T 200M MF

I a L 26 C54 , OSC CATHODE .001 COIL

NOTE :

1sT POSITION (PHONO) NOT SHOWN.

©John F. Rider


ll schema/jar, WESTINGHOUSE PAGE 17-7

CND.

SW.

aC.

4

L

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L7 LOOP

REAR SW4

C30

WESTINGHOUSE ELECTRIC CORP.140DELS H -104B, H -105B, H -107B, H -108B, H -110B, H -111B, H -137B, H -138B Chassis V-2102-5

CI 33MMF

C17 RF' TRANS

ey UNlUNEQ ü1 66MM¡F(" L12 i

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C19

C21

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8+(c)60 AVC >134 (223V)

AVC

L25 4 B.C.OSC.

COIL

BAND-SWITCH SHOWN AT 3RD POSITION CLOCKWISE .

BROADCAST BAND (MANUAL)

R4 IM

©John F. Rider


8 WESTINGHOUSE dcl:e.Katicá.

MODELS H -104B, H-105B,WESTINGHOUSE ELECTRIC CORP. H -107B, H -108B, H -110B, E -111B, H -137B, H -138B Chassis V-2102-5

GM D.

B.C.

L3 ANT. COIL

CIO S.W. ANT. COIL

o. NI J i

-.

Eca9^R2 470MMF 68

FRONT SW4

R 39 33K

CONVERTER

47MMF

FRONT SW3

C19 C20

C22

L24 S.W.OSC.

COIL

.0028

SW3 REAR

BAND -SWITCH SHOWN AT 4TH POSITION CLOCKWISE.

SHORT WAVE BAND

99V

47V C53 22OMMF

ILII.F TRANS.

á Ñ I I

íBLUEISco n ISn i

-- 6L -----J R31 270K

R4 IM

B i-(2239 AVC

©John F. Rider


WESTINGHOUSE PAGE 17-9 WESTINGHOUSE ELECTRIC CORP. MODEL H-157

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©John F. Rider


MODEL H-157 WESTINGHOUSE ELECTRIC CORP.

1

RIS R12 R17

f

M HI

`í et SPKR.SOCKET CCC

R2e,' SWI-

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TI OUTPUT

OQR8 C19 o 0 nlTRANS 4,

CI ' CIS R4

. R3

BOTTOM VIEW OF CHASSIS

WESTINGHOUSE 636 SPKR.SOCKET7 PILOT LAMP ó

CD pND

I F. TRANS. ,J

C4 OSC. TRIM. 050 P

T I [ nu 11 25Z6 25L6 25L6

O O C3 CID

Pelí`T IFO. S \\ r GT GT GT

TRANS. `i CIO 1

ANT. TRIM. Cl ' ^ '

CORO POWER AC.

CHASSIS LAYOUT

ALIGNMENT Before beginning alignment, make certain that the dial pointer is correctly Connect an output meter across the speaker voice coil.

While making the following adjustments, keep the volume control set signal generator output attenuated to avoid AVC action.

for

positioned.

maximum output and the

Signal Radio Step Connect Signal Generator Dial Adjust

Generator to- Frequency Setting

1 6SF7 control grid through 455 kc 1600 kc Primary and secondary trimmers of 0.1 mfd capacitor 2nd I -F trans. for max. output

2 6SA7 control grid through 455 kc 1600 kc Primary and secondary trimmers of 0.1 mfd capacitor 1st I -F trans. for max. output

3 Antenna terminal through 455 kc 1600 kc "Peak" all I -F trimmers for 200 mmf capacitor max. output

4 Antenna terminal through 1615 kc gang at Oscillator trimmer for 200 mmf capacitor minimum max. output

5 Radiated signal (no 1400 kc 1400 kc Antenna trimmer for actual connection) max. output

©John F. Rider


WESTINGHOUSE PAGE 17-11 WESTINGHOUSE ELECTRIC CORP.

TENSION SPRING -

POINTER

DRIVE MECHANISM

PARTS LIST

2- TURNS

MODEL H-157

Part No.

V-5019 V-5268 V-5021

Description

Asbestos Sheet Background, dial Baffle and Grille Cloth Assy

Part No.

V-5023 V-5033 V-4986

Description

Nameplate, Volume Plate, front glass Pointer, dial

V-4997 Bracket, dial background .__. V -3166S Pulley, 7/16" dia. V-4991 Bracket, var. capacitor mtg. V-4987 Rail, pointer (incl. pulley V-5352 Bracket, volume control studs) V-1139-1 Cabinet, mahogany V-4994 Resistor, ballast, 75 ohms V-3304 Capacitor, electrolytic (R3)

30 mfd 150 v. (C1) RC20AE220M Resistor, 22 ohms / w. (R4) 50 mfd 150 v. (C2) RC30AE910J Resistor, 91 ohms 1 w. (R5)

V-4993 Capacitor, var. 2 -gang (C3, C4, C5)

RC40AE152M RC10AE332M

Resistor, 1500 ohms 2 w. (R6). Resistor, 3300 ohms 1/4 w. (R7)

RCM20A680M Capacitor, 68 mmf mica (C6) RC 10AE223M Resistor, 22K 1/4 w. (R8, R9) V-4992 Capacitor, trimmer (C7) RC 10AE823K Resistor, 82K 1/4 w. (R10) .... RCM20A301M Capacitor, 300 mmf mica RC20AE184K Resistor, 180K 1 w. (R11)..

(C8) RC20AE224K Resistor, 220K 1h w. (R12).. RCP10W6502A Capacitor, .005 mfd 400 v. RC1OAE224M Resistor, 220K 1/4 w. (R13)..

(C9) RC1OAE274K Resistor, 270K 1/4 w. (R14)_. RCP10W4103A Capacitor, .01 mfd 400 v. RC 10AE334K Resistor, 330K 1/4 w. (R15)..

(C10, C11, C12, C13, C14, C15)

RC10AE225M RC10AE106M

Resistor, 2.2M 1/4 w. (R16)__.. Resistor, 10M 1/4 w. (R17)...

RCP10W4503A Capacitor, .05 mfd 400 v. V-4988 Shaft, tuning (C16, C17, C18, C19) V -3344S-1 Sleeve, spacer, var.

RCP10W4204K Capacitor, .2 mfd 400 v. (C20) Capacitor mtg. RCP10W4104A Capacitor, .1 mfd 400 v. V -3246S Socket, octal

(C21, C22) V -3163S Socket, octal (pin No. 1

V-4763 Clamp, dial GND) V-3382 Coil, oscillator (L1) V-4989 Socket, pilot lamp V-4982 Control, volume (R1), tone V -3299S Socket, speaker

(R2) and switch (SW1) V-5034 Speaker, 5"x 7" P. M. V-4349-1 Cord, A -C power V -3248S Spring, dial drive V -4304S-10 Cord, dial drive (incl. clip).. V-3909 Strip, plastic, loop mtg. V-5024 Cover, back V -3228S-1 Terminal Board, 2 lugs V-4983 Dial Scale V-4776 Terminal Board, 3 lugs V-4072-1 Fastener, back cover clip .._. V-5041 Terminal Board, 4 lugs V-4893 Foot, rubber V -3375S Terminal Board, 5 lugs V-3J45S-5 V-4362-3

Grommet, var. capacitor mtg. Knob, ON-OFF and tone ....

V-3328 Transformer, 1st I -F (L3, L4, C23, C24)

V-5039-1 V-5028-1

Knob, tuning Knob, volume

V-3329 Transformer, 2nd I -F (L5, L6, C25, C26, C27, C28, R18)

No. 6S6 V-5031

Lamp, pilot Loop, antenna (L2) V-3297 Transformer, output (T1) ..

V-5043 Narfieplate, Westinghouse V -3752S Washer, felt (for knobs) V-5022 Nameplate, Stations V -3267S-4 Washer, flat (chassis mtg.)..

©John F. Rider


WESTINGHOUSE ELECTRIC CORP. MODEL H-165

1 R4

SWI Ii n + C 3 _ RI -D ,/ U O

RI8

019 quo e ' 5

, 016 R9

6

C13 IRS L3

? ,TERM. ' 80ARO81 C14 Re R9 -__` -+ SEL. RIO --.

RECT. R12 RI3 i -"16R2 3 018 C20

023

gimüd R19

///:::

R21 `=17

028 .7 14 LS

1

0CI 2 RI -o/

R 3V4 1S5 1U4 ' ° '' IU4 I

024 E I C29 C26- U 0 O C21 1

BOTTOM VIEW OF CHASSIS ¡

n n ~ 1

ANT. TRIY. TRIP. / I

Cs ce

IllIg=alrBl ti \ 1

RI OSC. TRIM

I DIOI Ll :II tá L CII T 1

OUTPUT CIS

Cq lX1 l / ® 1.5.1 I F. SP TRiNS.

P C7

(.--C.1OSD PAD. PCORED

CS I }

TRNHHNADNS.

e ® ® I

II P I

v SIDE VIEW CHASSIS LAYOUT

%. 2 2 TURNS ',

-11W/MR -___ -___ _TENSION SPRING

r7 POINTER

DIAL DRIVE

ALIGNMENT Before beginning alignment, make certain that the dial pointer is properly orientated with respect to

the dial scale. Connect an output meter across the speaker voice coil. While making the following adjustments, keep the volume control set for maximum output and the sig-

nal generator output attenuated to avoid A. V. C. action.

Signal Radio Step Connect Signal Generator Dial Adjust for Generator to- Frequency Setting Maximum Output

1 1U4, I -F Amp., control grid 455 kc 550 kc Primary and secondary through a 0.1 mfd capacitor trimmers of 2nd I -F trans. 2 1R5, Converter, control grid 455 kc 550 kc Primary and secondary through a 0.1 mfd capacitor trimmers of 1st I -F trans. 3 Stator of R -F section (C7) of 455 kc 550 kc "Peak" all I -F trimmers tuning capacitor through a 0.1

mfd capacitor

4 Same as above 600 kc 600 kc Oscillator gadder (C4) 5 Same as above 1600 kc 1600 kc Oscillator trimmer (C10) 6 Repeat steps 4 and 5

7 Radiated signal (no actual 1400 ke 1400 kc R -F trimmer (C8) and ant. connection) trimmer (C6)

©John F. Rider


14 WESTINGHOUSE MOD EI, H-16 5 WESTINGHOUSE ELECTRIC CORP.

PARTS LIST

Part No.

V-4865 V-4869

V-4169-1 V-3920 V-4790-1 V-4790-2 V-4818 V-4789 V-4835 V-4893 V-4836-2

Description

Background, pointer Baffle and Grille Cloth

Assembly Base, shield, miniature tube Battery Pack, "A -B" Bracket Assy., R.H. (control) Bracket Assy., L.H. (control) Bracket, chassis mounting Bracket, rail pointer Bracket, shield mounting Bumper, door Button, hole plug

Part No.

V-3891

V -4800S-1 V -4876S-1 V-5045 V-3873 V-4801 V -3166S V-4115 V-4872

V-4807

Description

Nut, speed, back cover, 3/16"

Nut, speed, grille mounting Nut, speed, speaker mounting Paper, fish, switch insulating Plug, battery cable Pointer Pulley, 7/16 dia. Rectifier, selenium Resistor, ballast, 2200 ohms

(R3) Resistor, 68 ohms fusible

V-4242 Button, back cover (R4) V-1134 Cabinet RC1OAE391K Resistor, 390 ohms 1/4 w. V-3874 Cable, battery (R5, R6) V-4791 Capacitor, dry electrolytic,

dual 50 mfd 150 v. (C1, C2) RC20AE821K Resistor, 820 ohms 1, w.

(R7) V-3866 Capacitor, electrolytic cart-

ridge; 100 mfd 25 v. (C3) RC20AE682K Resistor, 6800 ohms 1/2 w.

(R8) V-4792 Capacitor, oscillator padder RC20AE471M Resistor, 470 ohms 1/2 w.

(C4) (R9) V-4793 Capacitor, variable 3 gang RC30AE102M Resistor, 1000 ohms 1 w.

(C5, C6, C7, C8, C9, C10, C11) RC1OAE474M

(R10) Resistor, 470,000 ohms 1/4

RCM20A101M Capacitor, 100 mmfd mica w. (R11, R12) (C12) RC10AE473M Resistor, 47,000 ohms 1/4 w.

RCM20A101K Capacitor, 100 mmfd mica (R13) (C13, C14) RC10AE225M Resistor, 2.2 megohms 1/4 w.

RCM20A301M Capacitor, 300 mmfd mica (R14) (C15, C16) RC10AE104K Resistor, 100,000 ohms 1/4 w.

RCP10W6102A Capacitor, .001 mfd 600 v. (R15) (C17) RC10AE224M Resistor, 220,000 ohms 1/4 w.

RCP10W6502A Capacitor, .005 mfd 600 v. (R16) (C18, C19) RC20AE105K Resistor, 1 megohm 1/2 w.

RCP10W4103A Capacitor, .01 mfd 400 v. (R17) (C20) RC1OAE335M Resistor, 3.3 megohms 1/4 w.

RCP10W4503A Capacitor, .05 mfd 400 v. (R18, R19) (C21, C22, C23, C24, C25, C26)

RC20AE475M Resistor, 4.7 megohms 1/2 w. (R20, R21)

RCP 10W 4104A Capacitor, 0.1 mfd 400 v. V-4802-4 Screw, speaker mounting (C27, C28, C29) V-4805 Shaft, tuning

RCM20A241K Capacitor, 240 mmfd mica V-4169-2 Shield, miniature tube (C30) V-4806 Shield, mounting plate

V-4849 Catch, door, front cover (under chassis) V -4202S Clamp, power cord V-5521 Shield, selenium rectifier _... V-4874 Clamp, spring (electrolytic

capacitor mounting) V-3344-1 Sleeve, spacer, grille mount-

ing and variable capacitor V-4794 Coil, antenna loading (Ll) mounting V-4795 Coil, oscillator (L2, L3) V -4292S-1 Socket, miniature tube V-4813 Coil, R -F (L4, L5) V-4809" Speaker, 4x6" P.M. V-4796 Control, tone, 1.0 megohms V-4057 Spring, dial drive

(R1) V -3258S Spring, knob V-4797 Control, volume, 1.0 megohms V-3909 Strip, plastic, loop mounting

(R2) V-3892-2 Stud, back cover V -4304S-6 Cord, dial drive V-4829 Stud, handle mounting V-4349-1 Cord, power A -C V-4803 Switch, battery -off-line V-4825 Cover Assembly, back (SW1, SW2) V-4826 Cover Assembly, front, with V-3351 Terminal Board, 2 lugs

knob and catch V -3228S-2 Terminal Board, 2 lugs, 1

V-3371 Foot, rubber lug grounded V-4798 Grille, front V-3487 Terminal Board, 11 lugs V-3766 Grommet, fibre V-4810 Terminal Strip, 2 lugs, R.H. V-3345-5 Grommet, rubber control bracket assembly ..

V-4828 Handle V-4811 Transformer, 1st I -F (L7, V-4833 Hinge, back L8, C31, C32) V-3437 Insulator, electrolytic capac-

itor V-4812 Transformer, 2nd I -F (L9,

L10, L11, C33, C34) V-4840 V-4848 V-4839 V-4856

Knob, battery -off-line Knob, door catch, front Knob, volume, tuning, tone Latch, back cover

V-37525 V-4853

V -3267S-4

Washer, felt, knob mounting Washer, felt, upper front

cover Washer, flat, back cover

latch mtg. V-4831 Loop, antenna (L6) V-4896 Washer, flat, foot mounting.. V-4846 Molding, front cover V-3867 Washer, phenolic, ballast V-3894 Nameplate mounting

©John F. Rider



WESTINGHOUSE ELECTRIC CORP. MODEL APR -478

.005

BOTTOM VICW OF TUBE SOCKETS

too

35050T

)r

IYSA7

125A7 1i -e' DE T. -05C.

YELLOW

Reel Ili [gift

455KC 455KC UIF rMIF

TRAM 1RANs 17557 /.

C5 05C 1600KC

12017

125/(7 I.F.

75V

1 C04MONCWIMIwo INSULATED FROM CHASSIS

5 YyOupD a0L wi7.N Ac iS+snCD b17AGC5 M

G. SGNS RI wMLVn.550I[OWC7.GC5 w

501611

D GROUND

125Q7 2e9DET-A F-AVC

S50

220.orn llal

o~i0S I- 1

F0 G. 220

I10V -50.5 MA

35Ai5GT z RECT.

IIt r

35755T

50L6GT OUTPUT

37

R 478 - RC 517.

+ +

M° .

Alignment Procedure Power Supply.-Although this model employs an ac -dc chassis, it is

not suitable for use on d.c., as this would damage the motor. Output Meter Alignment.-Connect the meter across the voice coil, and turn the receiver volume control to maximum.

Test-Oscillator.-Connect the low side of the test -oscillator to the receiver chassis, through a .01 mfd. capacitor, and keep the output as low as possible.

Antenna.-The set is equipped with a built-in loop antenna. If an outdoor antenna is used, it should be connected to the blue antenna lead on the rear of the chassis.

Steps Connect the high side of test-osc. to-

Tune test- osc. to- Turn radio

dial to- Adjust the fol -

lowing for max. peak output-

1

12SK7 I -F grid In series with

0.1 mfd.

455 kc Quiet Point 1,500 kc end

of dial

C3, C4 2nd I -F

transformer

2

12SA7-1st. det. grid in series

with 0.1 mfd.

Cl, C2 1stI-F

transformer

3 Antenna Lead (blue) in series with 100 mmfd.

1,560 kc signal

frequency

C5 (osc.)

4 1,300 kc C6 (ant.)

5 Repeat steps 3 and 4.

,.,,j PHONO RADIO

LOUD,zR ru "OFF J1 MELLOW 1 MELLOW

SOFT,' FULL VOLUME PHONO-RADIO TUNING

CONTROL POWER-TONE CONTROL CONTROL

Controls

The phonograph motor is a self-starting, constant -speed in- duction type. It should be lubricated every six months by apply- ing a few drops of light machine oil to the top and bottom motor spindle bearings, to the turntable spindle and to the turntable drive wheel bearing.

CAUTION: Keep oil away from drive bushing on top of motor spindle and from rubber driving tire on turntable drive wheel.

RED

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DYNAMIC SPEAKER

ENONT V IR W RADIO -PROMO -TONE & POWER bW. SHOWN IN OFF POSITION

51 1911N7

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3M-Mr 10.1

TURNTABLE

DRIVE WHEEL

MOTOR SPINDLE

MOTOR

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TURNTABLE SPINDLE

PICKUP REST

NEEDLE SCREW

CUP FOR USED NEEDLES

Phonograph

Pre-setting Dial.-With gang condenser in full mesh, the pointer should be horizontal.

©John F. Rider


16 WESTINGHOUSE MODEL m' -478 WESTINGHOUSE ELECTRIC CORP.

Electrical and Mechanical Specifications

Frequency Range 540-1,650 kc

Intermediate Frequency 455 kc

Tube Complement (I ) RCA- I 2SA7 1st Detector -Oscillator (2) RCA-I2SK7 1-F Amplifier (31 RCA- 12SQ7 2nd Detector, 1st A.F, and A.V.C. (4) RCA-50L6GT Power Output (5) RCA -3 5Z5GT Half -Wave Rectifier Dial Lamp (I) Mazda 51, 7.5 volts, 0.2 amp.

Power Output (125 volt, 60 cycle supply) Radio Phonograph Undistorted 0.9 watts ... 1.5 watts Maximum 1.2 watts ... 2.1 watts

Power Supply Ratings A -C Rating 105-125 volts, 60 cycles, 55 watts Loudspeaker (RL -8I -A4) Type 5 -inch Permanent Magnet Dynamic Voice -Coil Impedance 4 ohms at 400 cycles Phonograph Synchronous (self-starting) Records 10 -inch and 12 -inch, 78 r.p. in. Pickup Crystal, 100,000 ohms at 1,000 c, p.s. Average Output of Pickup I V, volts at 1,000 c.p.s.

across 1/4i meg. load Cabinet Dimensions (inches). Height 10%, Width 16%s, Depth 13% Weight (net) 18 Rounds Tuning Drive Ratio 9---1

REPLACEMENT PARTS

PART No.

DESCRIPTION

PICKUP AND ARM ASSEMBLIES

33591 Arm-Pickup arm only-less cartridge, base and cable

34481 Arm-Pickup pivot arm and shaft 34482 Base-Pickup mounting base 34758 Bushing-Rubber bushing and metal bushing for

pickup pivot arm shaft 33122 Crystal-Pickup crystal cartridge and needle screw. 34311 Ring-Retaining ring for pivot shaft 33529 Screw-Needle screw.

MOTOR ASSEMBLIES

36402 Arm-Idler arm and stud 20134 Ball-Steel ball 37215 Motor -105-125 volts, 50 cycle 36404 Motor -105-125 volts, 60 cycle motor 36403 Mounting-One set of motor mounting grommets,

spacers, and washers 36406 Plate-Idler arm guide plate 36401 Plate-Motor plate complete with bearing and ball 30340 Retainer-Motor fan retainer 30585 Spring-Idler arm tension spring 36399 Turntable-Turntable and bushing complete with

spindle 33726 Washer-"C" washer for idler wheel 36405 Washer-Flat washer for idler wheel 36274 Wheel-Idler wheel and bearing

SPEAKER ASSEMBLIES (RL -81-A-4)

32907 Cap-Dust cap 36295 Cone-Cone complete with voice roil

MISCELLANEOUS ASSEMBLIES 36438 Crystal-Dial scale crystal

4109 Cup-Used needle cup 36612 Decalcomania-Control panel decal 35447 Decalcomania-Trade mark decal 36809 Hinge-Cabinet lid hinge 36246 Holder-Needle book holder 34340 Knob-Radio-Phono-Power switch knob 36202 Knob-Tuning or volume control knob 11765 Lamp-Dial lamp, Mazda 61 36305 Mounting-One set of mounting hardware for motor 36303 Mounting-One set of mounting hardware for pickup

arm 30870 Plug -2 -prong male plug for motor 32610 Rest-Rubber pickup rest 14270 Spring-Retaining spring for knobs 36810 Support-Cabinet lid support

PART No. DESCRIPTION

CHASSIS ASSEMBLIES (RC -517-A)

35332 Can-Shield can for I -F transformer, Part No. 36432 35097 Can-Shield can for I -F transformer, Part No. 35086 12720 Capacitor -100 mmfd., moulded mica 12694 Capacitor -220 mmfd., moulded 12952 Capacitor -330 mmfd., moulded mica 34459 Capacitor-.0025 mfd., 1,400 volts-tubular 33584 Capacitor-.005 mfd., 1,200 volts-tubular

4937 Capacitor-.01 mid., 1.000 volts-tubular 11315 Capacitor-.015 mfd., 400 volts-tubular 30938 Capacitor-.025 mfd., 400 volts-tubular 32787 Capacitor-.05 mid., 400 volts-tubular

4839 Capacitor -0.1 mfd., 400 volts --tubular 34505 Capacitor -0.2 mfd., 300 volts-tubular 12484 Capacitor -0.25 rñfd., 350 volts-tubular 35673 Capacitor-Electrolytic comprising 1 section of 30

mfd., 150 volts, and 1 section of 50 mfd., 150 volts. 35571 Coil-Oscillator roil 36285 Condenser-Variable tuning condenser 36435 Control-Volume control 32634 Cord-Drive cord .

36439 Dial-Dial scale 36440 Indicator-Station selector indicator 36289 Loop-Antenna loop 36286 Plate-Dial plate and support-less dial 30868 Plug -2 -contact female plug for motor cable ' 30189 Resistor -120 ohms, '.= watt

3153 Resistor -1,500 ohms, 1 watt. 13998 Resistor -22,000 ohms, !,q watt 12412 Resistor -47,000 ohms, ',, watt 12264 Resistor -220,000 ohms, ',, watt 12285 Resistor --470,000 ohms, % watt 12679 Resistor -2.2 meg.. 'iá watt 13601 Resistor -10 meg., ' watt 36437 Shaft-Tuning shaft 36292 Socket-Dial lamp socket 31251 Socket-Tube socket '

31319 Socket-Tube socket-moulded for 12SA7 tube 30585 Spring-Drive cord spring 35098 Spring-Used to hold I -F transformers in shield cans 36436 Switch-Radio, phono., and power switch 35088 Transformer-First I -F transformer-less shield can 36432 Transformer --Second 1-F transformer-less shield

can 35666 Transformer-Output transformer. 33726 Wásher-"C" washer for tuning shaft

©John F. Rider


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MODELS 6A10. 6A20

nJ6,hn F., Rider RECORD CIANGER: Wilcox -Gay Model 6E45, RCD. CH. 17-7


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ZENITH RADIO CORP. ZENITH PAGE 17-3

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ZENITH PAGE 17-7

ZENITH RADIO CORP. MODEL 6MF780, Ford

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ZENITH RADIO CORP. SAGE 17-8 ZENITH

MODEL 6MF780 Ford

Receiver Installation INSTRUMENT PANEL

ANTENNA CABLE.

LINK "B"

VENTILATOR HANDLE

WING NUT "A"

SPEAKER

SPEAKER CABLE

HOOK BOLT "D"

WING NUT 'E'

BOLT, WASHER & NUT "C"

1-Install the antenna and antenna cable. Complete installation instructions are packed with each antenna kit.

2-Remove the radio opening cover plate from the instrument panel.

3-Place the speaker over the studs on the rear of the instrument panel, with the cable to the left. Fasten securely with the four wing nuts No. 54-189, furnished in the installation kit.

4-Start the No. 12-24 wing nuts "E" on the hook bolts "D" (Fig. 2). Place the receiver in position. Slip the end of the hook bolts through the receiver brackets with the hooks turned toward the center. Hook the bolts in the holes provided on the instrument panel. Tighten the wing nuts sufficiently to hold the receiver in place while the supporting link "B" is connected between the rear hanger bracket of the receiver and the ventilator bracket of the car, with bolts, lock -washers and nuts ("C." Fig. 2.)

5-Tighten all nuts and bolts to hold the receiver firmly in place.

6-Connect "A" lead to circuit breaker. (Fig. 3.)

7-Connect the speaker cable and antenna lead to the receiver.

"A" LEAD

Fig. 2. Set Installed. Cut Away View

8-IMPORTANT: Turn the receiver on and allow it to operate for approximately fifteen minutes in order for each part to reach normal operating temperature. Tune in -a weak station near 1200 Kc. With a small screwdriver adjust the antenna trimmer (Fig. I.), for maximum volume.

CIRCUIT BREAKER

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Fig. 3

© John F. Rider www.americanradiohistory.com

PA E 1

ZENITII RADIO CORP. MODEL 6MF780 Ford

Setting The Adjust -O - Matic Tuning Pressing the station selector touch -bar six times will cause

the tuning mechanism to change through a cycle of six

positions. Five of these Adjust-O-Matic positions, at

which numbers appear in the station indicator window,

may be set for five favorite local stations while the sixth

position, at which the letter M appears in the station

indicator window, may be used for selecting stations

manually.

The five positions, at which numbers appear in the sta-

tion indicator window, may be adjusted in succession

to any desired dial settings. However, in order to sim-

plify the identification of the stations, it is advisable to

set the Adjust-O-Matic mechanism in sequence accord-

ing to frequencies of the stations, beginning with the

station broadcasting on the lowest frequency, and pro-

gressing to the station broadcasting on the highest fre-

quency.

Turn the receiver on and allow it to operate for at least

fifteen minutes in order for each part to reach normal

operating temperature before making the following Ad-

just-O-Matic settings:

Interference Important

Use the utmost care in the following operations to insure freedom from interference. Clean away paint and dirt to make good contacts between condensers and the car. Tighten all bolts and nuts securely.

1-Install a condenser, Part No. 22-1148,

and a ground strap, Part No. S-9343, on the voltage regulator (Fig. 4.)

2-Mount a condenser, Part No. 22-1326,

on the ignition coil

and connect the lead to the battery terminal (Fig. 5.)

3 --Cut the high tension wire, that runs from the ignition coil to the distributor, three quarters of an inch from the

point where it enters the soft rubber high tension wire

5-9343 GROUND STRAP

CONDENSER ON VOLT

Fig. 4

CONDENSER PART NO. 22-1149

REGULATOR

1-Press the station selector touch bar repeatedly until

No. 1 appears in the station indicator window.

2-Pull the manual tuning knob outward engaging the

Adjust-O-Matic mechanism with the dial. (Fig. 1.)

3-Select the station desired and tune it in by turning the tuning knob in the same manner as when tuning the

radio manually. Tune very carefully for clearest reception.

CAUTION: Do not attempt to force the tuning knob in.

The knob will return to the "in" position when the sta-

tion selector touch bar is again depressed.

4-Press the station selector touch bar, pull the manual

tuning knob outward, and tune in the station desired for

No. 2 position. Use the same procedure for adjusting

positions Nos. 3, 4, and 5.

When the five positions have been adjusted to the five

desired stations, it is only necessary to press the station

selector touch bar to return to manual tuning or to any

one of the stations on the Adjust-O-Matic.

NOTE: When the letter M appears in the station indicator

window, the manual tuning knob must be pulled out-

ward and turned in order to select stations manually.

Elimination housing. Shorten the wire one inch. Remove the wire from the coil, and screw the suppressor into the wire

ends (Fig. 6). Replace the wire in the coil.

IGNITION COIL BATTERY TERMINAL

Fig. S

22-13 CONDENSER

is grounded to the car body, and does not touch the antenna roof tube nut. Be cer-

tain the antenna wing bolts are tight.

If ignition interfer-

ence is still present, check to make sure that the inside center windshield trim strip

Fig. 8

nut and all the instrument panel

©John F. Rider


WA 17-10 ZENITH ELS 614N088,

6MN788, Nash ZENITH RADIO CORP.

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©John F. Rider


ZENITIJ PAGE 17-11

ZEÑI'i`FÍ RADIO COkP. MODELS 6MN088, 6101788, Nash

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©John F. Rider


ZENITH PAGE 17-13

AJohn F. Rider tZh'CO_Rli CHANGER: Zenith Model S-11468, RCD. CH. 15-1


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ZENITH PAGE 17-15

ZENITH RADIO CORP. MODEL 6R087Z MODEL 6R087ZZ

PARTS LIST

DIAL ASSEMBLY MI SCELLANOUS 26.334 DIAL SCALE 2.121 CABINET BACK 46-522 CONTROL KNOB (DUMMY) 11.85 LINE CORD & PLUG 46-538 TUNING KNOB 11.87 LINE CORD & PLUG (Z MODELS) .

46.548 RADIO -PHONO REJECT KNOB 12.1138 WAVEMAGNET MTG. BRET 57-1071 ESCUTCHEON PLATE 15-23 PLUG CAP & INSULATOR (USED ON 59.161 DIAL POINTER S11456) 76-413 TUNING CONTROL SHAFT. . . . . . . 15-62 PLUG CAP & INSULATOR (USED ON 78.504 DIAL LIGHT SOCKET & WIRE. 511456) 80-365 TUNING SHAFT TENSION SPRING 19.123 PHONO UNIT MTG. CLIP 80.402 DIAL CORD TENSION SPRING. 27-81 MOUNTING FLANGE(SHAFT BEARING DISC) 100.36 DIAL LIGHT BULB 6.3 VOLTS 36.31 RECORD CHANGER PULL-OUT HANDLE. . .

159.50 PLUG BUTTON (DIAL SCALE MTG.) . 45.526 10" DYNAMIC SPEAKER 188-30 RETAINING RING (TUNING SHAFT) 206-526 OUTPUT TRANSFORMER 188-32 RETAINING RING (DIAL PULLEY). . 207-526 FIELD COtL(NOT REPLACEABLE) 188.34 RETAINER RING 208-526 CONE & VOICE COIL 188-54 KNOB CLAMPING RING 49.563 10" DYNAMIC SPEAKER(ALT.FOR 49-526) 192.94 DIAL CRYSTAL 206-563 OUTPUT TRANSFORMER S11161 DIAL PULLEY CORD & EYELET ASSEN 207.563 FIELD COIL(NOT REPLACEABLE) 511162 POINTER PULLEY CORD & EYELET ASSEN. 208.563 CONE & VOICE COIL 511168 CONDENSER PULLEY & BUSHING ASSEN. . 49-581 10"P.M.SPEAF.ER ¡,ALSO SEE S11292 DIAL PULLEY & BUSHING ASSEN . . 5-13257)). .C.22Z S11558 TONE & VOLUME CONTROL KNOB & RING OUTPUT TRANSFORMER (SEE 95-1011)....

ASSEN 208-581 CONE & VOICE COIL 49-585 10"P.M. SPEAKER .ETCzzz..

296-585 OUTPUT TRANSFORMER

CHOKES á COILS 52.377 208-585 CONE & VOICE COIL

SPEAKER CABLE (49.563) 95-909 1ST I.F. TRANSFORMER 58-88 WAVEMAGNET PLUG (3 PRONG) 95-910 2N0 I.F. TRANSFORMER 58-132 SIX PRONG PLUG (USED ON 511456) S11163 DETECTOR COIL ASSEN 58-152 SPEAKER PLUG. "4-4i4.Z 511164 OSCILLATOR COIL ASSEN 58-156 SPEAKER PLUG (49- 585) 42zz 513478 ANTENNA LOADING COIL ASSEM.6C22 Z7.. 70.83 #6 X 1/2 WASHER HD. WOOD SCREW 511896 ANTENNA LOADING COIL ASSEM..4422Z (CABINET BACK)

CONDENSERS 72-55 72.59

k6 x 3/8 FLAT PHILLIPSHD.W00D SCREW 82 x 2.1/2 PHILLIPS FLAT HD. WOOD. .

22.138 .2 MFD. (C16) 200 V. SCREW (ESC. MTG )

22.171 .05 MFD. (C3) . . .... .600 V. 78.128 SPEAKER PLUG SOCKET 22-448 .004 MFD. (C14 & C20) . . . .600 V. 78.349 WAVEMAGNET' PLUG SOCKET 22.530 12 MMFD sC2-Z2;2 600 V. 78.373 OCTAL BASE TUBE SOKCET (5 CONTACT). 22.1444 .00) 6C 22z 200 V. 78-374 OCTAL BASE TUBE SOCKET (6 CONTACT). 22-829 .05 MFD. (C4) 200 V. 78-376 OCTAL BASE TUBE SOCKET (8 CONTACT). 22.830 .02 MFD. (C15) 600 V. 78.555 SIX PRONG SOCKET (USED ON S11456) .

22.854 .0005 MFD. (C13) 600 V. 78.611 OCTAL BASE TUBE SOCKET (Z MODEL). .

22.1041 .005 MFD. (C19) 400 V. (8 CONTACT) 22-1157 .03 MFD. (C9) 200 V. 78-623 PHONO SOCKET (6 PRONG) 22-1362 .004 MFD. (C12) 600 V. 78.732 SPEAKER PLUG SOCKET (Z MODEL) . .

22.1369 3 SECTION GANG COND. (C1) f . . . 89-463 PHONO MTG. SPRING

22-1372 DIVY ELECTROLYTIC 15 MFD.-450V.X . . 83.1218 INSULATING STRIP (GANG CUND.) . .

15 MFD.-350V.X . 83-1240 BLACK VINYLITE TRIM STRIP (RECORD (C17 & C18) 6C2222 CHANGER)

22-1382 DRY ELECTROLYTIC 40 X 40 MFD. 450V. X 40 MFD. - 25 V. 6C22Z

85.337 PHONO -RADIO SWITCH

(c17. 18 22).. 85.349 RECORD REJECT SWITCH 94.295 BUSHING -SWITCH MTG. (Z MODEL) . .

22.1386 .02 MFD. (C21) 600 V. 94-334 BUSHING -SWITCH MTG 22-1611 DRY ELECTROLYTIC 40 HFD-450V 95-911 POWER TRANSFORMER. 117V. 50.60. .

(C23.6C22z) ...... ...... ....... 95.1007 OUTPUT TRANSFORMER. 6C2Z?Z.

RESISTORS 95-1011 SPKR.OUTPUT TRANSFORMER (49-561)6.G22Z

63-156 10M PHM (RI) 1 WATT 95.1019 112.420

FILTER CHOKE. . . .Eic.Z27 . .

PHONO MTG. SCREW 63.296 220M OHM (R2( 1/4 WATT 112.489 HANDLE MTG. SCREW (36.31) 63.579 220 OHM (R3) 1/4 WATT

114.58 6-32 x 3/8 HEX ACCRN HD.M.S. SCREW . 63-589 10M OFM (R5) 1/4 WATT 114-128 CHASSIS MTG. SELF TAPPING SCREW . 63.591 2214 OHM (R10) 1/4 WATT 114.193 .

k8 x 3/16 HEX ACCRN HD.S.T. SCREW. 63-595 100M OHM (R15-6C22z) 1'4 WATT 114.202 .

88.32 x 1.1/8 SLOTTED HEX.WASHER HD 63-597 470M OHM (R13) 1/4 WATT S.T. SCREW (USED ON 12-1138) 63-600 2.2 MEGOHM (R7) 1/4 WATT 125-17 SWITCH MTG. GROMMETS 63-605 1M OHM (R6) 1/2 WATT 125-45 CONDENSER MTG. GROMMETS 63-655 220M OHM (R14.6C22Z2) . . .1/4 WATT 196.80 DUST GASKET 63-656 270M OHM (R15-6C22Zz) . . .1/4 WATT 202-381 PHONO INSTRUCTION SHEET 63.673 8.2 MEGOHM (R4) 1/4 WATT 202.388 INSTRUCTION BOOK 63-976 15 MEGOHM (R11) 1/4 WATT 237-1 CABLE CLAMP

63.1170 63-1222

1500 OHMaW.W. (R16-602211,....2 WATT 470 OHM w.w. (R14-6C22z)....l WATT

S13479 LOOP ANTENNA. 6C22 2Z 63.1227 220 OHM P.R. (R17-6C22z)....I WATT S13391 12" PM SPEAKER ASSEMBLY 4,4...222z. 63-1340 VOLUME CONTROL & SWITCH (R9) 513406 10" PM SPEAKER ASSEMBLY .62.2-2z. 63.1341 TONE CONTROL (1 MEGOHM) (R12) 511450 WAVEMAGNET ASSEN. (30A)..C.*2Z 63- 1545 400 OHM 10W 1R16 -6c22). 511456 INTER CONNECTING CABLE ASSEN

511468 RECORD CHANGER ASSEN S11920 RECORD CHANGER MTG. FRAME ASSEM... 512864 DRIVE WHEEL &PIN A9SEM.(REC.CHANG.) 513257 10"P.M. SPKR. &TRANSFORMER ASSEN.

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©John F. Rider


volume x`lii - americanradiohistory.com · page 17-2 warwick model 11011 warwick mfg. corp....

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