master mods volume 6

5/13/2018 Master Mods Volume 6

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Priee $:J9.95

-AVo nme-6-

PHOTO BY TOM FALKER

The Vo lum e You H ave Been W aiting ForCo ve rs S ta nd ard Rad io Tun e-u p In fo rma tio nChanne l Modific atio n a nd R e p _ a J r Tipsif'


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Radio Tune-Up Section 4,5,6 YOSAN JC-2204 (154848822:RevB Board)Channel Conversion 24

TUNE-UP & PEAKING INFO for the Following: Channel Conversion Frequency Chart 25ALAN 555 4ALAN 560 4 GALAXY DX66VCOBRA 18 Ultra 4COBRA 21LTD CLASSIC (New Model made in China)4COBRA 25LTD WX CLASSIC 4COBRA 29LTD WX CLASS IC 4COBRA 148-GTL(New Model made in Malaysia) ..4c;oBRA HH-70 4DIRLAND 77-099 5OIRLAND SS-3900 & SS-3900B 5EMPEROR TS-5010 5GALAXY OX 33HML(EPT 360014B Board) 5GALAXY OX 55V(EPT 360014B Board) 5GALAXY OX 66V(EPT 360014B Board) 5GALAXY OX 77HML(EPT 360014B Board) 5GALAXY MIRAGE 44 (EPT 360014B Board) 5GALAXY PLUTO (EPT 360014B Board) 5GALAXY SATURN II (EPT 360014B Board) 5MAXON I1CB-25 5MAXON MCB-30 5MIDLAND 77-285 5RANGER ST-IOOD / HCA818 6SUPERSTAR 120 6SUPERSTAR 121 (EPT 120112Z Board) 6SUPERSTAR 360FM 6SUPERSTAR 360 a 6SUPERSTAR 3900 6SUPERSTAR "JA" (EPT OOJA10Z Board) 6TRI MAX 220 " 6YOSAN JC-2 204 ,6

STANDARD 40 Ch. Frequency Chart 6EMPEROR TS-SOIO

Comparison Chart. 7Channel Conversion 8RIT Modification 9,10Mike Wiring Chart 10Alignment Layout (Main Board) 11Variable Alignments (Main Board) 11

DIRLAND SS-3900 , SS-3900BRoger Beep Modification 12Channel Conversion 12Channel Conversion Chart : 1325MHz Channel Conversion 1429MHz Channel Conversion 15+10KHz Frequency Jump Modification 16Switchable Talk-Back Modification" ~6SUPER-TALK Installation Instructions 17

COBRA 148-GTL (New Malaysia Model)Clarifier Slide Modification 18Super-Slide Clarifier Modification 19Switch Channel Conversion 20

Channel Conversion 26Channel Conversion Frequency Chart 26

SUPERSTAR 121 (EPT 120112Z Board)Switch Channel Conversion 27Rotary Channel Conversion 28Frequency Channel Chart 29+10KHz Frequency Jump Modification 30

REPAIR TIPREGENCY INFO CB- 2 30

VARIABLE ALIGNMENT SECTIONCOBRA 18 ULTRA 31COBRA 21LTD Classic 31COBRA 25LTD WX Classic 31COBRA 29LTD WX Classic 31COBRA HH-70 31Craig LlOl 31Craig L102 31Craig LI03 31Craig LI04 32Craig L131 32Craig L2 31 32DIRLAND 77-099 32DIRLAND SS-3900 & SS-3900B 32EMPEROR TS-5010 32GALAXY OX 33HMLlEPT 360014B Board) 33GALAXY DX 55V(EPT 360014B Board) 33GALAXY DX 66V(EPT 360014B Board) 33GALAXY DX 77HML(EPT 360014B Board) 33Mirage 44 (EPT 360014B Board) 33PLUTO (EPT 360014B Board) 33SATURN II (EPT 360014B Board) 33LAFA'YETTE SSB 140 34MAXON MCB-25 34MAXON MCB-3D 34MIDLAND 63-445 34MIDLAND 77-200 (200M) 34MIDLAND 78-574 34MIDLAND 7001 (79-007) 34RANGER ST-IOOO I HCA818 35SUPERSTAR 121 (EPT 120112Z Board) 35SUPERS TAR "JA" (EPT 0OJA1 0Z Boa rd) 35TRI MAX 220 35TRS CHALENGER 730 35YOSAN JC-2204 , 35

CHANNEL CHARTSGALAXY DX44V 36GALAXY MIRAGE 44 (EPT 360014B Board) 36GALAXY DX 77HML (EPT 360014B Board) 37

Switch Channel Conversion Freq. Chart. 21 MIKE WIRING SECTION 39Rotary Channel Conversion 22 MIKE WIRING CHARTS 4D r 50Rotary Switch Channel Conv. Freq.Chart 23 INDEX 53

1994All Domestic and Foreign Rights Reserved

01319C1331JPM

CB TUNE-UP MANUAL Master Edition Vol. 6[1]


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FIRST EDITIONFIRST PRINTING - JULY 1994

CB TUNE-UP MANUALMASTER EDITIONVOLUME 6

Printed in the United States ofAmerica

Copyright 1994 by THOMAS PUBLISHINGParis, IL 61944

'Every precaution was made to lim it. all errors. !f{owever the publisherassum es no responsi6 i!ity for errors or om issions. :l\IS .itner is any fia6i!ityassumed for damaqes resulting from the use of the information containedherein. !4 .fso this in for mation is not intended to 6 e used to exceed :FCCspecifica tions ana is for informational purposes on[y .. Some information isfo r 'LXP02(lJ' use O :A {_.D YThis Manua[ is pr inted w ith tJ3[ue Ink; on yraypaper. ~l~'\! \,. \

/ \

CB TUNE-UP MANUAL Master Editi[2]


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The CB market is changing rapidly. Some older radio models are being phasedout while many new and exciting models are being introduced. Many of these newradios incorporate much of the new integrated circuit technology nowavailable.

One of the latest new radios just introduced, is the EM PER OR TS 50 10. Thisnew model incorporates the best features of the HR-2510 and the RCI-2950, andthen adds some new features of its' own. This new radio will prove to be verypopular.

Other new models from DIRLAND and YOSAN are just the tip of the iceberg onwhat's to come in future models.

Improving CB. performance is often attempted by many without knowing whichadjustments to use, or modifications to make. Even more frustrating is tryingto remember and/or to compile this information for future use. As new radiosarrive on the market it is almost impossible to acquire good easy tounderstand technical and modification Info. It is our goal to supply you withgood useful information in an easy to understand and use MANUAL FORMAT. Wefeel that it is very important to supply information that will be useful andprofitable for you, the technician.

Included in this volume is a complete Index listing covering CB TUNE-UPMANUALS Volume 1 through Volume 6. This should be a great time saver for anyfuture reference.

THOMAS PUBLISHING, 128 EAST WOOD PARIS,IL 61944 1994 (All Domestic and Foreign Rights Reserved)

' 7 1 i L , manua l is priated wit~ 1J(ue Jn I(on I j m 1 J paper .

CB TUNE-UP MANUAL Master Edit ion Vol . 6[ 3 }


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HOW TO USE TUNE-UP INFORMATIONIn COLUMN 1 you will find the MODEL NUMBER of each radio, COLUMN 2 provides

MODULATION information, COLUMN 3 provides AM POWER ADJUSTMENTS, and COLUMN 4 listsSSB ADJUSTMENTS if applicable. On some SSB models we have shown 2 adjustments. The first will befor SSB modulation and the second is for the SSB power (ALC). If only one adjustment is shown in theSSB column then it will be for SSB power (ALC).

See footnote for morespecific information.

Adjust R268 for modulation or cutone end ofD207 or remove C273from the circuit.

Adjust L2D2 & L204 for AmPower.

Adjust RV8 for SSBmodulation &RV5for SSB power.

S om e o f t fie P ow er A d ju stm e nts l is te d' a re e ;. ;p a ru fa J. if ey pe c oif s. ' Ih es e c oil s c an b e a d ju ste d 6y e ith er s pr ea din g th e c oifs a pa rt o r 6ymo vi ng t (1 t c oif s d o se r to g et fi er . ' Ih es e c oif s c an b e mo rfi Jie d 6y rwwving 1tum in o rd er to a[ww yolt t o m o ve th em c lo se r t og etf ie r ifn ee de d , a nd th us in cr ea se tu nin g r an ge .

VR4 or Cut one end of 07 LID, L8VR5 or Cut one end of 09 Ll4, LIDVR4 or Cut one end ofDll LI4,L13,L12Cut Rl31 2 VRID VRllRV4 or Cut one end of 017 L6

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77-099 LII,LI2VR12

RV-4 or Cut one end of'DfVR13S-3900 VR L 4 or Remove TR53

SS-3900B VR 14 or Remove TR53 VRI3 VR12

- I

VR14 or Remove TR53 VR13 (Hi Pwr) VR16 (Lo Pwr)lJX 66V 1 VR14 or Remove TR53 VR13 (Hi Pwd VR16 (Lo Pwr)DX77HML I VRl4 or Remove TR53 VR13 (Hi Pwr) VR16 (Lo Pwr) VR12MIRAGE 44 , VR14 or Remove TR53 VR 13 (Hi PWT)ZVR16 (Lo Pwr)PLUTO I VR14 or Remove TR53 VR 13 (Hi Pwr) VR 16 (Lo Pwr) VR12SATURN III VR14 or Remove TR53 VR 13 (Hi PWT)VR 16 (Lo PWT) VR12

RV2 or C ut one end 0[D403

CD TUNE-UP MANUAL Master Edition Val. 6[5 J


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VR12 (La Pwr Mod) VR 14 (Hi Pwr Mod) lVR 14 or Cut one end of R30 I VR12

VRI2ne end of R249RVR 14 or Cut one end of R249 VR12

TR32 VR8RI2

Channell = 26.965 Channel 11 = 27.085 Channel 21 = 27.215 Channel3l =27.315Channel 2 = 26.975 Channel 12 = 27.105 Channel 22 = 27.225 Channel 32 =27.325Channel 3 = 26.985 Channel 13 = 27.115 Channel 23 = 27.255 Channel 33=27.335Channel 4 = 27.005 Channel 14 = 27.125 Channe124 = 27.235 Channel 34 =27.345ChannelS =27.015 Channel 15 = 27.135 Channel 25 =27.245 Channel 35 = 27.355Channel 6 = 27.025 Channel 16 = 27.155 Channel 26 = 27)65 Channel 36 =27.365Channel 7 =27.035 Channel 17 = 27.165 Channel 27 = 27.275 Channel 37 =27.375Channel 8 =27.055 Channel 18=27.175 Channel 28 =27.285 Channel 38 =27.385Channel 9 =27.065 Channel 19=27.185 Channel 29 = 27.295 Channel 39 =27.395Channel 10 =27.075 Channel 20 =27.205 Channe130 =27.305 Channel 40 =27.405



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Mode Switch YES YES YES SWR/Cal YES YES YES Dimmer YES YES YES RF Power Control YES NO YES RJT Control YES YES YES ON I OFF I Volume YES YES YES Squelch I Auto Squelch YES YES YES Loc/DX YES NO NO RF Gain Control * Lee I DX RF Gain Settings YES YES PA YES YES ON Mode SW Channel UP I DOWN YES YES YES BandSWlTCH YES YES YES Span SWITCH YES YES YES VFO YES YES YES Shift SWITCH YES NO NO NB/ANL YES NB Only YES Meter SWITCH S I RF, Mod, SWR S I RF, Mod, SWR NO Frequency Lock YES YES YES Mic Gain ON IOFF ON I OFF Continuous Beep SWITCH YES YES YES Scan YES YES YES Memory Scan YES NO NO , Memory Capabilities ]0 Channel NO 10 Channel ENT Button YES NO YES Manual Button YES NO YES TX Output Power (AM/FM ) 10 Watt IOWal! SWatl Multifunction Meter YES YES NO Frequency Display YES YES YES Meter Mode Display YES YES YES Band Segment Display YES YES YES Channel &Memory Display YES Channel Only YES VFO Step Indicator YES YES NO Function Indicator YES NO NOf-- Remote control on Mic YES YES YES PAl SP Connector YES NO YES EXT, Speaker Connector YES NO YES



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Conversion InsttuctioMThere are actually two optiona when converting the Emperor TS-501Q. First remove the four screws which are holding the

bottom cover in place. Next lift the bottom cover just enough to clear the case and slide it to the right, being careful not to pullthe speaker wires loose. You now will be viewing the CPUIPLL board located to the front of the radio. Next refer to thediagram above and locate R539 (TP8) and R540 (TP7) as shown. Once located choose the option below you wish to use toconvert the TS-5010 for more channels.

" b " CH 1 28.500MHz to CH 50 28.990MHz"c" CH 1 29.000MHz to e n 50 29.490MHz" d " CH 1 29.500MHz to CH 5029.690MHzHC .. CH I 26.965MHz to CH 40 27.405MHz

~ CB MASTER EDITIONVolume 7 wil l include the comple tealignment procedure fol' tnt: EMf'EROR TS-5010 & any othertechnical Information that i :>ecome!>ava l la i :> le .

Band Display ~bll CH I 28.500MHz to CH 50 28.990MHzBand Display "eft CH I 29.000MHz to CH 5029.490MHzBand Display ' I 'd" CH I 29.500MHz to CH 50 29.690MHzBand Display liE" CH 126.500MHz to CH 50 26.990MHzBand Display )IF II ca 127.000MHz to CH 50 27.490MHzBand Display n G tt CH 127.S00MHz to CH5027.990MHzBand Display IIh" CH 129.700MHz to CH SO30.l90MHzBand Display "ell CH I 26.965MHz to en 40 27.405MHz

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i1.) Remove both bottom and top cover; s crews, and remove only the top cover for. riow. You should now be looking at themain circuit board with the component s ideup.

Front right comer ofthe main circuit board.2.) Next find D140, 10. ated .iD.the frontIight hand comer of the main circuit boardand carefully cut one end with a small pairo f s id e cu ts .

~ 3.) Next obtain a 7.SV Y, watt zener and a Ii10 Ohm Y, watt resistor. Solder one end of I i :

. the resistor to the point on the main circuitIboard as shown (constant 8V), and leavethe other end loose for now. Now solder theunbanded end (anode) of the 7.SV Zener to,the brass shield that is attached to the10m2 filter. Solder the banded end of the

"'"zener to th e loose end of the IOohmresistor. Be sure to leave only enough leadlength on the resistor and zener asnecessary and that they do not touch any, other components.I~ 4.) Next, tum the unit over and lift the II

t m bottom cover just enough to slide the cover~ aside. Be careful not to pull the speakeriwires loose. Now locate the rectangularcircuit board directly behind the RITcontrol as shown in the diagram to the left.This board is labeled 2001-4202.

purple Wire?Solder new wire to the junction ofthe added 10 ohm resistor andthe 7.5V zener.

Located just behindthe RIT control.

5.) Once located, make the cut as shownusing an x-acro knife. Be sure that thecircuit board has been totally separated atthis point before continuing.6.) Next solder a new 8" piece of hook-up:wire from the point on the 2001-4202 boardas shown. Now feed this wire through tothe main circuit board. Turn the unit overand solder the other end of this wire to the junction of the 10 ohm resistor and 7.SV

: zener added in step 3.

Go to Step 8 on ne"t paSe ..

cs TUNE UP MANUAL Master Edition Vol. 6[9]


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TECHSTARVR502 PB-0170500

11I1'C508 L515~ : ~ 1 8L504 ~ ..- ~e iI" ~ , '" I[]U l l I ' I ' " " 1 1 1 : ; : : 0516:J iii !!BR539~O ll-E-R54o C D 1 ~ L502k~'*':!!'JTn ~ VR501 CPU/PLL

OJ502* '' ' ' ' ' ' . . I : :< : < , ". o> : , ; o : I I" ,~ : I > I : I- I ~ ~ ~ o ._~ ::oo=-=


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VR109

,C \ I ~ i , i M , etera : : : : , Final Bias

VR110 ~ L101AM Mod iii' [~]DVR102

" s n Meter

Ant. Cont.

V,R ,103 ~SSB PEP _.~ VR104"'CWPWR

VR101 f&.Squelch'"TP3

.....-)R302~--~------~~~'IVR111AMPWR- L106[!JVR115SidetoneI)VR107

Mod Meter10 7L109 L10BwO[!J[!J~LSB USB C

R112 VR113Driver BiasoL102 TP2[!J ~ R114I-I L103[!J

L124[!J

VR105SSB Sal.R106

DFMDev.

VR10BTX Freq.oFig. TS-5010BD 1994 ' Ihomas

[11] cs TUNE-UP MANUAL Master Edition VDI.6


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2 \og er tBeep :Moai fi ca ti on I ns tr u ct io n s1.) Remove the four screws holding the bottom cover in place. Next lift the bottom cover up and to the right enough to clear thecase, being careful not to pull the speaker wires loose.2.) Locate jumper J9 on the circuit board located just behind the S I RF meter. This jumper can be cut to rle-activate the RogerBeep if desired. Ifyou wish to have the Roger Beep switchable ( on I off), add a SPST switch across J9 once it has been cut.

Channe! Conve r si on I ns tr u ct io n s1.) Remove the four screws holding the bottom cover in place.

Fig. SS-3900SW 1994 Th omas

Next lift the bottom cover up and to the right enough to clearthe case, being careful not to pull the speaker wires loose.

2.) Locate the large switch mounted to the left side ofthe radios'case.

3.) Normal position from the factory for this switch is to the left.Slide this switch to the right position to activate all bands andchannels as shown on the channel chart on the following page.

cs TUNE-UP MANUAL Master Edition Vol. 6[12]


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1 25.615 1 26.065 26;515 1 26.965 1 27.415 1 27.86527.87527.88527.90527.91527.92527.93527.95527.96527.97527.98528.00528.01528.01528.02528.03528.05528.06528.07528.08528.10528.11528.15528.13528.14528.16528.17528.18528.19528.20528.21528.22528.23528.24528..25528.26528.27528.28528.29528.305

26.52526.53526.55526.56526.57526.58526.60526.61526.62526.63526.65526.66526.67526.68526.70526.71526.72526.73526.75526.76526.77526.80526.78526.79526.81526.82526.83526.84526.85526.86526.87526.88526.89526.90526.91526.92526.93526.94526.955

2 27.425 23 27.435 34 27.455 45 27.465 56 26.475 67 27.485 78 27.505 89 27.515 910 27.525 1011 27.535 1112 27.555 1213 27.565 1314 27.575 1415 27.585 1516 27.605 1617 27.615 1718 27.625 1819 27.635 1920 27.655 2021 27.665 2122 27.675 2223 27.705 2324 27.685 2425 27.695 2526 27.715 2627 27.725 2728 27.735 2829 27.745 2930 27.755 3031 27.765 3132 27.n5 3233 27.785 3334 27.795 3435 27.805 3536 27.815 3637 27.825 3738 27.835 3839 27.845 3940 27.855 40

2345678910111213141516171819202122232425262728293031323334353637383940

2345678910111213141516171819202122232425262728293031323334353637383940

2 26.9753 26.9854 27.0055 27.0156 27.0257 27.0358 27.0559 27.06510 27.07511 27.08512 27.10513 27.11514 27.12515 27.13516 27.15517 27.16518 27.17519 27.18520 27.20521 27.21522 27.22523 27.25524 27.23525 27.24526 27.26527 27.27528 27.28529 27.29530 27.30531 27.31532 27.32533 27.33534 27.34535 27.35536 27.36537 27.37538 27.38539 27.39540 27.405

2 25.6253 25.6354 25.6555 25.6656 25.6757 25.6858 25.7059 25.71510 25.72511 25.73512 25.75513 25.76514 25.n515 25.78516 25.80517 25.81518 25.82519 25.83520 25.85521 25.86522 25.87523 25.90524 25.88525 25.89526 25.91527 25.92528 25.93529 25.94530 25.95531 25.96532 25.97533 25.98534 25.99535 26.00536 26.01537 26.02538 26.03539 26.04540 26.055

26.07526.08526.10526.11526.12526.13526.15526.16526.17526.18526.20526.21526.22526.23526.255'26.26526.27526.28526.30526.31526.32526.35526.33526.34526.36526.37526.38526.39526.40526.41526.42526.43526.44526.45526.46526.47526.48526.49526.505

CB TUNE-UP MANUAL Master Edition Vol . 6[13]


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Fig. SS3900-25


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'Denotes Pin 1

DJRLAND SS-3900EPT360014B Board

Fig. D3900CMl

Instructions

J65J6 B

J69 IC6 &IC7 located just belowthe channel selector switch./

SPSTToggieSwitch Up =Extra Channels

[Component Side View] 1994 Thomas

I.) Remove both radio covers and unplug the speaker wires from the circuit board. Next locate Pin 12 and Pin 13 of rC 7 (MC1408BCPadder chip).This conversion is shown from the component side, however you could also perform this conversion from the circuit board side instead.

2.) Next mount IISPST toggle switch in any convenient location and wire as shown above, being careful not to short any other pins of [e7 withIIsolder bridge while soldering the wires from the SPST switch.

3.) Re-check all connections and plug speaker wire in before applying power. See the chart below for your new 29MHz channels .

4 = 29.1855 =29.[956 =29.2057=29.2158 =29.2359 =29.245

10 = 29.25511 = 29.26512 = 29.285I3 = 29.29514=29.30515'" 29.315

34=29.52535 =29.53536 = 29.54537 =29.55538 =29 . .56539 =29.57540=29.585

16=29.33517 =29.34518 =29.35519=29.36520=29.38521 =29.395

22 = 29.40523 =29.43524 = 29.41525 =29.42526 =29.44527 = 29.455

28=29.46529 =29.47530 =29 ..48531 =29.49532 =29.50533=29.515

1994rff~~ (217) 1;6"6-1;210 C B 1 TJ NE -U P MANUAL Master E ditio n V ol. 6[15]


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OIRLANO 553900EPT360014B Board J65 IC6 & IC7locatedjust belowthe channel selector switch. J68/ SPST Toggle

Flip switch up for 10KHzup on all channels.

1994 'Ihomas

Denotes Pin 1

Fig. D390010

Once completed you should now have switchabletalk back control.

Installation InstructionsLocate 080 in the audio sect ion and unsolderand lift one end so as to clear it from the circuitboard as shown.Next obtain a SPST Mini-Toggle switch andinstall i t in any convenient location. Next soldertwo wires to the switch as shown. You will needto make sure that they are long enough reach to 080.Next solder one wire to the unsoldered end of 080,and the other wire is soldered to the connectionwhere DaO was unsoldered from.

Note: This modif icat ion wil l also wont with many other Export Radios thai use this same basic circuil . Superstar 3600, Galaxy2100, Texas Star 2100; Excalibur SSB. Galaxy Jupiter, to name a few. Some uni ts have 090 instead of 080 but are the same.Fig. D3900-SW 1994 ' I fWmas

0l994Q?'kma,. PJl~ (217) 46'6'-42fO CB TUNE-UP MANUAL Master Edition Vol. 6[16]


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Installation. Instructions1. Locate the mirror board that connects TP9, TP8, and TP7 in the final section. Next slide this board to theright until it no longer makes a connection with TP8. Then solder the #4 white wire to the TP8 terminal andsolder the #3 red wire directly to the side of the mirror board. Make sure that your solder connections are goodand solid.

2. Next mount a 10K miniature pot in a convenient location and solder the other two wires of the SUPER-TALK

module as shown and add the 1.2K resistor.

llillit. This SUPERTALK installation Is basically the same for many other' Export and Domestic CB radios with the removablemirror board. It is important however that when you slide the mirror board over that it does not short against any othercomponents. If you find that this is the case. insulate the end of the board with some electrical tape before procee


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In the diagram below (Fig 148CLS) we have shown the stock COBRA*J48..(JTL clarifier circuit before modification for reference. InFig. 148CLM we have shown the same circuit after the clarifier circuit has been modified. This circuit is somewlu:Jldifferent thanpreviousmodels. This New Version is made in Malaysia and is no longer manufactured by Uniden. Although the circuit is basically the same as theolder Uniden version, someparts and wire colors are different.

Stock COBRA 148-GTL Clarifier &Osoillstor Circuit

US B L S B

. F ig . 148CLS 01994 ' 1 1 i o m a s

M o d i f ic a t i o n In s tr u c tio n s1. Locate D52 and R44 just to the right (Ifthe large 11.325 xtal in the clarifier circuit and cut one end as shown below. Itdoesn't matter which end of R44 and D52 you cut. Next locate Ii174 (12K Resistor) directly behind R44 and unsolder andremove it from the circuit. Next solder a jumper wire in place ofR174.2. Next trace the Green wire form the clarifier control to where it is soldered to the circuit board near cno, and cut itloose. Resolder the Green wire to the circuit board ground.3. Next trace the Orange wire from the clarifier control and unsolder it from the circuit board. At this point you will needto 'add a small amount of wire to the orange wire in order to make it long enough to reach pin 3 of IC4 (MB3756 RegulatorIe). IC4 is mounted to the side of the radio case about two inches back from the MIC socket. Now solder this wire to pin 3IC4. Pin 3 of IC4 (3rd pin from the back of the radio) has no other connections. Your clarifier will now track on receive andtransmit.

Modified COBRA 148-GTL Clarifier &Oscillator Circuit S.N

i~oPirl3 of 104(MB3756)S.2V CoiIst1JnI R1872,7KFig. 148CLM

CB TUNE-UPMANUAL Master Edition Vol. 6[18]


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In most cases once the clarifier circuit has been modified, the stock clarifier control is just not adequate for all practicalpurposes. Not only is it difficult to clarify, the unit will also tend to drift off frequency due to the lack of clarifier controlstability. The cure for this problem is to install a lO-Turn Precision Potentiometer in place of the stock clarifier control. Thiswill allow you cover the same range in 10 complete turns versus 1 turn with the stock control. Your clarifier will then operatelike a FINE TUNE clarifier control and will have much improved stability, with very little or no frequency drift. Below wehave shown what the above circuit should look like Once modified and how to wire your new 20kl0 turn pot in place of thestock clarifier control for the COBRA 148-GTL.

S.2VRooelveOrange W - . . , . . .~ ' f R 4 4t ~.2K

Jum l>5 f A c ro ss 051for added sMe.

" '"ModiJied UNIDEN GRANT-XL Clarifier &- Oscillator Circuit w/20K 10 Turn Pot

R2368.2K

\dthis ..,.,."/(JPin3cflC4~~/ant

Fig.148CLSS 01994 on;_.

2OX:10 lJ 'u rn Po t tf Ji agram &Insta lla tion. Inst ructions1. First perform the standard clarifier modification on the previous page.

_ g , Next unsolder the Orange Wire, Blue Wire, and the Green Wirefrom the stock clarifier control. At this point you will need to remove theold clarifier control and install the new 20K-I0 turn pot in its place.Once that you have mounted the new pot, resolder the Orange Wire ,Blue Wire, and the Green Wire to the new 10 turn pot as shown in the 0"",, W i.. rPil3 IC 4 )

20K-1O TURN POT.

Bin Wi.,

diagram to the right. G Iff' W i n r TIGrlll\d)You may also want to add a jumper either across or in place D51 for Fig.Pot-GTL

increased slide. Once completed, your unit should now slide anywhere from 10 to 20 KHz with precision control.

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Fig. 148GTL-SW 1994 ' I homas

Circuit Board Side. View

SPST =S in gle P ole / S in gle T h row

1 4 8 -G T L C h a n n e l C o n v e r s i o n I n s t r a c t i o n s1. First locate Pin 14 of the MB8719 PLL chip on the bottom side of the circuit board. Using a ex-acto knife,carefully cut and isolate Pin 14 away from the circuit board run. Next solder a 4.7K v . . Watt resistor across thiscut as shown in the diagram above.

2. Next mount 3 SPST Toggle switches in a convenient location. Be sure to wire the switches up as shown,and to solder each wire carefully. Once all the wires have been soldered to the switches and to the circuitboard as shown, check all solderjoints before proceeding.

3. Now with all three switches in the down position you will still have the normal channels. Refer to theCobra 148-GTL Channel chart on the following page for the switch positions and their associated channels.

19945""-PJ>~ .{2t7} .lJfifi -4210 [20] . CB TUNE-UP MANUAL Master Edition Vol. 6


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POSITION #1 SWITCH 1 DOWN and SWITCH2 DOWN and SWITCH-3 DOWN =Normal Channels

POSITION #2 SWITCH-! UP and SWITCH-2 DOWN and SWITCH-3 DOWN =

15 26.815 20 26.885 25 26.925 30 26 ..85 (Ch3)16 26.835 21 26.895 26 26 ..45 31 26.995(3A)17 26.845 22 26.905 27 26.955 32 27 ..05 (Ch4)18 26.855 23 26.935 28 26.965 (ChI)19 26.865 24 26.915 29 26.975(Ch2)

POSITION #3 SWITCH-l DOWN and SWITCH-2 DOWN and SWITCH-3 UP =

37 = 27.415 38 = 27.425 39 =27.435 40 27.445

POSITION#4 SWITCH-l UP and SWITCH-2UP and SWITCH-3 DOWN =

1 27.605 6 27.505 10 27.555 14 27.6052 27.455 7 27.515 11 27.565 16 27.4753 27.465 8 27.535 12 27.585 20 27.5254 27.485 9 27.545 13 27.595 23 27.5755 27.495

POSITION #5 SWITCH-! DOWN and SWITCH-2 UP andSWlTCH-3 DOWN =

. . . . . 1 27.605 11 27.725 21 27.855 31 27.9552 27.615 12 27.745 22 27.865 32 27.9653 27.625 13 27.755 23 27.895 33 27.9754 27.645 14 27.765 24 27.875 34 27.9855 27.655 15 27.775 25 27.885 35 27.9956 27.665 16 27.795 26 27.905 36 28 ..057 27.675 17 27.805 27 27.915 37 28.0158 27.695 18 27.815 28 27.925 38 28.0259 27.705 19 27.825 29 27.935 39 28.03510 27.715 20 27.845 30 27.945 40 28.045

l994dTkma.J '(?J~ (u~ 1;6'6' -1;210 C B TU NE-U P M ANU AL M aster Edition V ol. 6[21]


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9 \ s J t a r y Sw itc h C lia nn e{ Conv er sio n Instructions1. Obtain a Double Pole 16 Position Rotary Switch. Be sure to get the Break Before Make type. You will also need 2 smallsignal diodes (IN914, IN4148 or Equivalent), a piece of 5 wire ribbon cable long enough to reach from the switch to the PLLchip connections, and 1/4. 7k 114watt resistor. Next solder the diodes to the switch as shown in the diagram above. Be surethat the cathode ends (Banded) are as shown once you have completed this step. The diode that connects between Pin 4 &Pin 5 should have the banded end to Pin 4 and the diode the connects between Pin 1& Pin 4 should also have tbe bandedend to Pin 4.

2. Next locate Pin 14 of the PLL and using an ex-acto knife carefully isolate Pin 14 as shown above. Next solder the 4.7kresistor across this cut in order to allow Pin 14 to operate at its normal state. Once this has been done you may connect theribbon cable to switch - prior to mounting in its permanent location. Be sure that the wires are connected as shown in theabove diagram. Once that you have mounted the switch you may then make the connections to the PLL chip as shownabove. Re-check all your connections before turning the unit on. The channel chart on the next page shows your newfrequencies. Check all positions of the switch for these channels. Some adjustment of the VCO coil (L19) may be necessaryin some cases for full channel coverage. OJ994


24/38

POSITION #1 :::15::: 26.81516::: 26.83517::: 26.84518::: 26.85519::: 26.865

20 = 26.88521 = 26.89522 = 26.90523 = 26.93524 = 26.915

25 = 26.92526= 26.94527 = 26.95528 = 26.965(Chl)29 = 26.975(Ch2)

30= 26.985(Ch3)31 = 26.995(3A)32= 27.005(Ch4)

POSITION #2 = Normal Channels

POSITION #3=

37::: 27.415 38 = = 27.425 39 = = 27.435 40 = 27.445POSITION #4 =15= 27.455 22 = 27.545 29 = 27.615 36 = 27.68516 = = 27.465 23 = 27.575 30 = 27.625 37 = 27.69517=27.475 24 = 27.555 31 = 27.635 38 = 27.70518 = 27.495 25 = 27.565 32=27.645 39 = 27.71519 = 27.505 26 = 27.585 33 = 27.655 40 = 27.72520 = 27.525 27 = 27.595 34 = 27.66521 = 27.535 28 = 27.605 35 = 27.675POSITION #5 =1= 27.605 11 = 27.725 21::: 27.855 31 = 27.9552= 27.615 12 = 27.745 22 = 27.865 32 = 27.9653 = 27.625 13 = 27.755 23::: 27.895 33 = 27.9754 = 27.645 14 = 27.765 24= 27.875 34 = 27..9855 = 27.655 15= 27.775 25 = 27..885 35::: 27.9956 = 27.665 16 = 27.795 26 = 27.905 36 = = 28.0057 = 27.675 17 = 27.805 27 = 27.915 37 = 28.0158 = 27.695 18 = 27.815 28 = 27.925 38 = 28.0259 = 27.705 19 = 27.825 29 = 27.935 39 = 28.03510:::27.715 20 = 27.845 30 = 27.945 40 = 28.045

POSITION #6 = Normal Channels

IC B T UN E-U P M AN UA L M aster E dition V ol. 6

[23]


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Loo7~

Add this Jumperacross D719 for200 Channels.070607050708D 7 0 7e e t [ )

15484822REV:B 0719

R604A-ce-~ ro nt r ig fi t c or ne r view o f C i rc u it 'B o ar d. .

Fig. JC2204-CC e1994 'Ili01JUlS

Cf ianne [ Conve r si on Instruct ions1.) Remove the four screws holding the bottom cover. Carefully lift the bottom cover and set aside. Locate D719 as shownin the diagram above.2.) There are two ways that you may convert the.YOSAN JC2204. One is to add a jumper across D719, which will allowthe radio to be in the converted mode constantly. However this may not be desirable, due to the way that this radio selectsthe new 200 channels. There are no band switches to use. The YOSAN JC-2204 uses only the channel selector switch forselecting your new channels and bands. The bands A to E will be displayed above the channel display read-out. Eachcomplete clockwise revolution of the channel selector will yield 40 new higher channels. (See chart on the Wowing page.) Onceyou have reached Band "E" channel 40 will equal "28.305". Ifyou start a new revolution from this point you will start all overagain on Band "An and channell will now equal "26.065". Off couse turning the channel selecter in a counter-clockwisedirection will yield the same channels only in reverse.3.) So with that in mind you may find it more desirable to convert the unit using a SPST toggle switch as shown belowinstead. Using a toggle will allow you to instanlty revert back to your normal 40 channels, thus eliminating the hassle ofturning the channel selector switch an excessive amount of times just to reach your normal 40 channels.

L607~~ Or Add this Switchacross D719 for200 Channels.070607050708D 7 ~ i ~ e ,

15484822REV:B 0719R604A

~~ront riglit comer view o f C i rc u it 'B o ar d :

Fig. JC2204-CS 01994 % 0 T J U l S

CB TUNEUP MANUAL Master Edition Vol. 6[24]


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1 " " ' 1 1 , ! ' 9 0 S A f r f ~ G - 2 2 0 ' ~ W r . R E Q U fN l& yC H I I N H ' 6 b 'CHA~l~ , I I , , , , , 154848822 ~r :B Circuit Board

Band "A" Band"B" Band "C" Band "D" Band "E"Cha;wl F~ Clwmc:1 Frcq""""l ' Cfwmd FroquOOC) ' Channel F,"'Iucooy 1 , C ' . h . i n r J d Frcqua>


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l,_ Remove the radio case and locate the small circuit board connected to the left side of the radios case.z . . Once you have located this small circuit board, locate the wire (usually a green wire) that is soldered to the back of thisboard. Either unsolder or cut this wire loose from the board and seal the end of this wire with some small heat shrinkabletubing. This needs to be done in order to prevent this wire from ever causing a short, or possibly other damage to your radio.lL Next reconnect the connector that is unplugged from the small circuit board. Be sure the plug is plugged in properlyand well seated. That's it. Your radio will now cover all channels &all bands as shown in the channel chart below.

2345678910II1213141516171819202112232425262728293031323334353637383940

25.16525.17525.18525.20525.21525.12525.23525.25525.26525.27525.28525.30525.31525.32525.33525.35525.36525.37525.38525.40525.41525.42515.45525.43525.44525.46525.47525.48525.49525.50525.51525.52525.53525.54525.55525.56525.57525.58525.59525.605

2345678910111213141516171819202122232425262728293031323334353637383940

Preqtle""Y25.61525.625 225.635 325.655 425.665 525.675 625.685 725.705 825.715 925,725 1025.735 1125.755 1225,765 1325,775 1425.785 1525.805 1625.815 1725.825 1825.835 1925.855 2025.865 2125,875 2225.905 2325.885 2425.895 2525.915 2625.925 2725.935 2825,945 2925.955 3025.965 3125.975 3225.985 3325,995 3426,005 3526,015 3626.025 3726.035 3826.045 3926.055 40

26,06526.07526.08526.10526.11526.12526.13526.15526,16526.17526.18526.20526.21526.22526.23526.25526,26526,27526.28526.30526.31526..32526,35526,33526 . 3 4526.36526.37526.38526.39526.40526.41526.42526.43526.44526,45526.46526.47526.48526,49526,505

2345678910II1213141516171819202122232425262728293031323334353637383940

Prequem:y26,51526.525 226.535 326.555 426.565 526.575 626.585 726.605 826.615 926.625 1026.635 II26.65~ 1226.665 132 6 . 675 1426.685 1526.705 1626.715 1726,725 1826.735 1926.755 2026.765 2126.775 2226.805 2326,785 2426.795 2526.815 2626.825 2726,835 2826.845 2926.855 3026.865 3126.875 3226,885 3326.895 3426,905 3526.915 3626.925 3726,935 3826,945 3926.955 40

[26]

PreqtlOllOy26.96526.975 226,985 327,005 427.015 527.025 627,035 ,727,055 827.065 927,075 1027.085 II27,]05 1227.115 1327.125 1427.135 1527.155 1627,165 1727.175 1827.185 1927.205 2027.215 2127.225 2227.255 2327.235 2427.245 2527,265 2627,275 2727,285 2827.295 2927.305 3027.315 3127.325 3227.335 3327.345 3427.355 3527,365 3627.375 3727.385 3821.395 3927.405 40

27,41527,42527.43527.45527.46526.47527.48527.50527.51527.52527.5352755527.56527.57527,58527.60527.61527.62527.63527,65527,66527.61527.70527,68527.69527.71527.72527.73527,74527.75527.76527.77527.78527,79527.80527.81527.82527,83527,84527.855

23456789101112I3141516171819202122232425262728293031323334353637383940

27.86521,87527,88527.90527.91527.92527.93527.95527.96527.97527.98528,00528,01528,01528,02528.03528.05528.06528.07528.08528.10528.11528.155-28,13528,14528.16528.17528.18528.19528.20528.21528.22528.23528,24528.25528,26528.27528.28528,29528.305

2345678910II12J3141516171819202122232425262728293031323334353637383940

28.31528.32528.33528.35528.36528.37528.38528,40528.41528.42528.43528.45528,46528.47528.48528.50528.51528.52528,53528.55528.56528,57528,60528.58528.59528.61528.6252863528,64528.65528.66528.67528,68528.69528.70528.71528.72528,73528.74528.755

CB TUNE-UP MANUAL Master Edition Vol. 6


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CONSTANT8.~VoITS ---.'VEPT 120112Z Board

Cl994 d9k-9'1~(.2' 1) "~8-421O-' . _ , " ' " '

SPSTToggie

To Pin 12SW-l

To Pin 10

[27]CD TUNE-UP MANUAL Master Edition Vo/, 6

SW-3 To Isolated Pin 10 Land

1994 'T1i07llaJ

To Pin 11SW-2

Fig. SS121-CH


29/38

, .. ..__

CONSTANT 8.~VolT'lls~___'~E P T 1 20 1 1 2Z B oard

Double Pole / 6 PositionRotary Switch

Fig. SS121-RCH (j1994 < J 1 W T T U l S

"" " ""

Not ~ii: i:~, For Ilus tra lMfp6,rrioses anty.,p(ovllI~:rtll' j n formalio ria f( j j1 ,~Jc ir t use only_

1994QTkma&W'~ (217) Q()()-I;2{O CD TUNE-UP MANUAL Master Edition Vol. 6[28]


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[ RO TA Ry ] P OS IT IO N # 1 = Normal Channels[ SW ITC H] S W-I Do wn, S W- 2 D own & SW-3 Dowu= Normal Channels

[ROTARy] POSITION #2 & illB and Position=[ SW IT CH ] S W- 1 Up & S W- 2 D ow n & S W -3 D ow n & Hi Band Position=1 0111 2

27.84527.85527.87513141 5

27.88527.89527.90516 27.92517 27.9351 8 27.945

1 9 27.95 5

[ RO TA Ry ] P OS IT IO N # 3 & M ID B and P os it ion[ SW IT CH ] S W 1 Up , SW2 U p ,S W3 DOWN &M id B a nd P os it io n=1 27.925 4 27.965 7 27.995 1 0 28.0352 27.935 5 27.975 8 28.01 5 11 28.0453 27.945 6 27.985 9 28.025 1 2 28.065

[ RO TA Ry ] P OS IT IO N # 4 & H I B an d P os it io n[S WITCH] SW1 U p, S W2 U P. S W-3 Down & HiB and Position27 28.045 30 28 .075 33 28.1 05 36 28.13528 28.055 31 28 .08 5 34 28.1 1 5 37 28.14529 28.065 32 28.095 35 28.1 25 38 2 8.1 5 5

[ RO TA Ry ] P OS IT IO N # 5 & H I B a nd P os it io n=[SWITCH] SW1 Down, S W-2 Down, SW-3 U p & HiB and Position=1 26.135 11 26.255 21 = 26.385 31 26.4852 26.1 45 1 2 26.275 22 = 26.395 32 26.4953 26.155 13 26.285 23 = 26.425 33 26.5054 26.175 14 26.295 24 =26.405 34 26.5155 26.185 1 5 26.305 25 26.41 5 35 26.5256 26.195 1 6 26.325 26 26.435 36 26.5357 26.205 17 26.335 27 26.445 37 26.5458 26.225 1 8 26.345 28 26.455 38 26.5559 = 26.235 19 26.35 5 29 26.465 39 26.5651 0 = 26.245 20 26.375 30 26.475 40 26.575

CB TUNE-UP MANUAL Master Edition Vot. 6[29]


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R ad io : R EGENCV IN FO CB 2Prob lem: Tr ansmi t and recei ve come and go. DC Vo fl rootef to thi s po rnt and adjust!he yeo for 1.9Y on Channel 20 RX .

veo adjustment is i nside t he met alwax filled compartment located behind!he PLL chip.

Sometimes receive will stay in but transmitdoes not function at all times. Radio actsas if it has a loose connection. ~-GIID--R524

--t:lIJJ- R523C520 C52~ C524 ~o Q V O 9

~Cure: Locate C524 just to the left of lC50lPLL chip. This is a small orange IJ.lF 20V

IC-501tantalum capacitor. Remove and replace C524with a new IJ.lF 35V tantalum capacitor. Someadjustment of the VCO may be necessary ifthe unit does not lock in and function on Channell and Channel 40.

cs T UN E-U P M AN UA L M aster E dition V ol. 6[30]


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VARlIABLE ALKGNMENTSCO_~OS

18 ULTRA ( lew Weather Mod.' made in Thmland.VRlOl = RX "S" Meter Adjust VR30I = TX Meter AdjustVRl02 :: Receive "IF" Gain Adjust VRI02' = Squelch Range Adjust VR501 =: Modulation AM"C AdjustReceive Adjust = t.ioi, LI02, L103, L104, LIO:]Transmit Adjus = L30 I, L302, L303, L304, L306, L305, The 18Ultr has two VRlOZedjustments. The Squelch VRI02 is located in the front Jell corner a/radio board2 1L TO CLASS1C (New Model made In ('/IIna. No ' ' ' ' ' g l l r manufaclured by IIniden)VT n =:" TX Meter Adjust VR3 = Squelch Range AdjustVR2 = RX "8" Meter Adjust VR4 =Modulation AMC AdjustReceive Adjust:: LI, L2, L3, L4, L5Transmi Adjust = Ll2, LH, LID, L8

TCI = 10.240 Xtal Adjust

25LTD W X CLASSIC (Now Weather Mode! made in China. No longer maTl/ !(acl ll red by Unlden)VRI = RX "S" Meter Adjust VR3 :: TX Meter AdjustVR2 '" Receive "IF" Gain Adjust VR4 = Squelch Range Adjust VR5 = Modulation AMC AdjustVCl = 10.240 Xtal AdjustReceive Adjust= Ll, L2, La, U, L5, LG, L7Transmit Adjust= LIS, L14, LIO29L TO WX CLASSIC (Nf!W Wealher MlxM made in Clrmu N() longsr mOlllifacrurM by Umdel')VRl = Receive "IF" Gain Adjust VR3 :::Squelch Range AdjustVR2'" RX "S" Meter Adjust VR4 =Modulation AMC Adjust VR5 = TX Meter AdjustVR6::: Ant. Warning indicator AdjustReceive Adjust ::0 r.i, L2, L3, L4, L5. 1.6, L7, LS, L9Transmit Adjust =L20, L21, L17, L14, LI3 Ll2HH70RVl'" RX "S" Meter AdjustRV2 = TXMeter Adjust RV3 '" Squelch Range Adjust RV4 =Modulation AM C Adjust

Receive Adjust =: Ll , L 2, L3Transmit Adjust =L5, L6, LBOIC R A IG R A D IO S~ 1El,...L l O l

Rl28 = RX "S" Meter AdjustR50l= Dim Adjust (Minimum) R3l9 =TX Meter AdjustRl I? = Squelch Range Adjust R226 = Modulation AMC adjustReceive Adjuat >Tl07, TlOG, TI05, Tl04,Tl03, TI02, Tl01Transmit Adjust = T30 J , La02, L30a, T.'302,L305Ll02R308 = TX Meter AdjustR348 =Modulation AM C Adjust R37G::: RX " S O Meter AdjustR415 = Squelch Range Adjust R501 = SWR MeterReceive Adjust = T305, 'I '304, T302, T30), Ta07, L302, L30l, R3GG,R3t3Transmit Adjust =UlOG . 1.30?, LaOS , ,L309, L311, L3t3, L314. L 315, L 31 GLI03VR! = Squelch Range Adjust VR2 = RX "8" Mawr Adjust VR3 = 'J 'X Me t e r AdjustReceive Adjust = r.r. L2, L3, L4, L6, L?, LBTransmit Adjust = LIG, L12, LI3, LlS

en TUNE-UP MANUAL Master Eduion Vol. 6[3 1 ]


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lI04VRI '" RX O S " Meter Adju.stVR2 = RX IF GAIN AdjustReceive Adjust = t.i, L2, L3, L4, 16, L7Transmit Adjust = L18, Ll1, L14, LID1I31R106 = TXMeter Adjust"RI3H = ALe SSB PowerR229 = AM RX "8" Meter AdjustR240 = SSB RX "S O Meter Adjust

VR3 =TX Meter AdjustVR4 = Squelch Range Adjust

R3Q7 = RF GAIN Range AdjustR30D=RX AGe AdjustR315 = Squelch Range Adjust

Receive Adjust > 1'206,1'205,1'204,1'203,1'202,1'201,1'301,1'302,1'303Transmi t Adjust = 1'103, 1'10.2,1'10I, L111, LI09, LI06L231RI06 = TX Meter AdjustRI3D = ALC SSB PowerR229 = AM RX"S" Meter AdJustR240 = SSB RX "S" Meter Adjust

R307 = RF GAlN Range AdjustR309 = RX AGC AdjustR315 = Squelch Range Adjust

Reoeive Adjust = 1'.206,1'205,.1'204,1'203,1'202,1'201, 'f301, 1'302,1'303Transmit Adjust = TI03, 1'102, 1'101, L111, L109, L106

?7-09~RV3 = Squelch Range AdjustReceive Adjust = LI, L3, 14, L5, L2Transmit Adjust = L7, L8, L9, L11, L12553900 & SS39OO8VRI = AM'lFM "8" MeterVR2 = SSB/CW " S O MeterVR3 = SSB Squelch RangeVR4 = AM Squelch RangeVR5 = FM Deviation

-WLAN RAilOSCTI = 10"240 Xl.al Adjust

VR7 = Carrier BalanceVR8 =RF Transmit MeterVRIO = Final TX Bias Adjust (1)VRn = Driver TX Bias AdjustVR12 = ALC SSB PowerReceive Adjust =L1, L2, L3, L4, L5, L6, L7, L8Transmit Adjust =: L44, L43, 142, L40, L33

I L _ ETS-5010 (Main Board)\!RIO! '" Squelch Range AdjustVRlO2 '" RX "S" Meter AdjustVRWS '" SSB PEP ALeVR104 = CW Power AdjustVRI05 = SSB Carrier Balance Adjust

VRI06 '" FM DeviationVRi07 =Modulation Meter AdjustVRIOS = Transmit Frequency AdjustVRI09 = Transmit Meter Adjust\'RllO = AMModulation AMC AdjustRe~i.ve Adjust"'" i.ioi, LI02, L103, L104, LI06Transmit Adjust Variable Power Adjust Only. Cans are factory Set.

[32 J

VRo =Modulation AMC adjust

R401 = SSB Carrier Balance (1)R414 = SSB Carrier Balance (2)R6D5 =Modulation MiC Adjust

MOl = SSB Carrier Balance (1)R414 = SSB Carrier Balance (2)R6D5 =Modulation AM C AdjustR711 = Dimmer Adjust

VRl3 = AM Power AdjustVR14 = AN I Modulation .'\MeVRIG = CWTone LevelVR20 = Final TX Bias (2)VR21 = Transmit Frequency Adjust

RIll = AM Power AdjustVlUI2 = Final Bias Adjust SOmA)VRl13 = Driver Bias (SOmA)VRIHi = SideTone Adjust



34/38

OX 3 3HM L (EPT 3600J4B Board)VRI = = AM "S" MeterVR4 = = AM Squelch RangeVR5 = = FM Deviation

VR8 = RF Transmit MeterVR12 = NfAVR13 = AM:High Power Adjust\ . Receive Adjust = = Ll, L2, L3, L4, L5, L6, L7, L8Transmit Adjust = = L44, L43, L42, L40, L33

OX 55V (EPT 360014B Board)VRI = = AM "S" MeterVR4 = AM Squelch RangeVR5 = FM Deviation

VR8 = RF Transmit MeterVR13 = AM High Power AdjustVR14 = AM Modulation AMC AdjustReceive Adjust = = i.i, L2, L3, L4, L5, L6, L7, L8Transmit Adjust = = L44, L43, L42, L40, L33OX 6 6V (EPT 860014B Board)'i/Rl = AM "S" MeterVR4 = AM Squelch RangeVR5 = FM Deviation

VR8 = = RF Transmit MeterVR13 = = AM High Power AdjustVR14 = AMModulation AMC AdjustReceive Adjust= LI, L2, L3, L4, L5, L6, L7, L8Transmit Adjust = L43, L42,. L40, L33OX 7 7H M L (EPT 360014B Board)VRI = AM "S" Meter\i'R2 = SSBfCW "S" MeterVR3 = SSB Squelch Range'i/R4 = AM Squelch RangeVR(i = FM Deviation

VR7 = Carrier BalanceVR8 = RF Transmit MeterVRlO = Final TX Bias Adjust (1)VRll = Driver TX Bias AdjustVR12 = ALC SSB PowerReceive Adjust = LI, L2, L3. L4, L5, L6, L 7, L8Transmit Adjust = L44, L43. L42, L40, L33M IRAGE 4 4 (EPT360014BBoard)VRI = AM "S" MeterVR4 = AM Squelch RangeVR5 = FM Deviation

VR8 = RF Transmit MeterVR13 = AM High Power AdjustVR14 = = AM Modulation AMC Adjust

Receive Adjust = Ll, L2, L3, L4, L5, L6. L7, L8Transmit Adjust = L44, L43, L42, L40, L33PLUTO (EFT 360014B Board)VRl = AM "8" MeterVR2 = = S8BfCW "8" MeterVR3 = SSB Squelch RangeVR4 = AM Squelch RangeVR5 = FM Deviation

VR7 = Carrier BalanceVR8 = RF Transmit MeterVRIO = = Final TX Bias Adjust (1)VRll = = Driver TX Bias AdjustVR12 = = ALC SSB Power,I

Receive Adjust = = Ll, L2, L3, L4, L5, L6, L7, L8Transmit Adjust = = L44, L43, L42, L40, L33

S AT UR N II (EP1'8600J4BBoard)VRI = = AM "S" Metervm = = SSB/CW "S" MeterVR3 = = SSB Squelch RangeVR4 = = AM Squelch RangeVR5= FM Deviation

VR7 = = Carrier BalanceVRS = RF Transmit MeterVRIO = Final TX Bias Adjust (1)VRll = Driver TX Bias AdjustVRI2 =ALC SSB PowerReceive Adjust = 1.1. L2, L3, L4, L5, LB, L7, L8Transmit Adj ust = = L44, U3, L42, L40, L33

[33]

VRI4 = = AM Modulation AMC AdjustVRIB = AM Lo Power Adjust

VR16 = = AM Lo Power Adjust

VR16 = AM Lo Power Adjust

VRI3 = AM High Power AdjustVRI4 = = Ml Modulation MIC AdjustVRI6 = = AM Lo Power AdjustVR20 = Final TX Bias (2)VR21 = Transmit Frequency Adjust

VRI6 = = AM Lo Power Adjust

VRl3 = M[ High Power AdjustVRl4 = AMModulation AMC AdjustVRI6 = AM Lo Power AdjustVR20 = Final TX Bias (2)VR21 = Transmit Frequency Adjust

VRI3 = AM High Power Adjust\/R14 = = AMModulation AMC AdjustVR16 = = AM Lo Power AdjustVR20 = Final TX Bias (2)'i/R21 = = Transmit Frequency Adjust



35/38

SSB140RVIA = Final Bias AdjustRV2 = = SSB TX ALe (Power) AdjustRV3 = TX Meter AdjustRV4 = Carrier Balance (1)RV5 = Carrier Balance (2)

RV6 = AM RX "S" Meter AdjustRV7 = SSB RX "S" Meter AdjustRV8 = Receive AGC AdjustRV9 = M1 Squelch Range AdjustRVIO = SSB Squelch Range Adjust

RVU = SSB Mike Gain AdjustRV12 = AM Modulation AMC AdjustRV501 = SWR ~'feter CalibrateRV511 = Ant. Warning Ind. AdjustRV52I = Modulation Meter CalibrateVR4 = = A11 Power AdjustReceive Adjust = 1'14,1 '15. 1'13,1'10,1'9,1 '8, T7, TI2, T11Transmit Adjust = = T4, 1'5, T6, L7, LII, LI3 (Adjust these COils,forMaximum power on USB)

MCB25RVI = Squelch Range Adjust RV2 = Modulat ion MIC C'I'I = 10.240 Xtal AdjustReceive Adjust = L903, L902, L901Transmit Adjust = L701, L702, L802, RFC705, RFC709MCB-30RVI = Squelch Range Adjust RV2 =Modulation AMC CTl = 10.240 Xtal AdjustReceive Adjust = L903, L902, L901Transmit Adjust = L70I, L702, LS02, RFC705, RFC709

63445 (5fMlF'M!R,ptiio wiDE)VRI = Receive AGe AdjustVR2 = TX Meter Adjust VR3 = Squelch Range AdjustVR4 = RX "8" Meter Adjust VR5 = = Modulation AMC adjustReceive Adjust = LI06, L105, LI04, LI03, LI02, LlOlTransmit Adjust = L1l4, LIl3, L112, LI0977-200 (200M)VR2 = RX "S" Meter AdjustVR3 = Squelch Range AdjustReceive Adjust = = LI, L2, L3, TA, LB, L7Transmit Adjust = = L8, L9, LlU, Lll, LI478-574RVI = Carrier Balance #1RV2 = Carrier Balance #2RV3 = SSB Mike GainRV4 = SSB Receive "S" MeterRV5 = AM Receive "S" Meter

VR4 =Modulation AMC adjustVR6 =TX Meter Adjust VR7 = AWI (Ani, Wa"'llJg Indicator)

RV6 = SSB AGCRV7 = = AM Squelch Adj.RV8 = SSB Squelch Adj.RV9 = AM Modulation AMCRVIO= RF Gain Range

RV201=SSB Transmit ALCRV202=Transmit MeterRV206=TX Final Bias'CT201=10.240 Xtal Adj.VRI '" AM Transmit PowerINote: Adjust RV206 for. 70 Volts on the base of Q208AM Receive Adjust = 1'1, 1'2, T204, 1'205, 1'206, 1'207, 1'208SSB Receive Adjust = T4, 1'3Transmit Adjust =T204, 1'205, 1'3, '1'209, L209, L212, L214 (Adju8t in USBMode)7001 (79-007 )RVI = Final Bias AdjustRV2 = TX Meter AdjustRV3 = RX "S" Meter AdjustRV4 = Receive AGC Adjust

RV5 = Squelch Range AdjustRV6;; Carrier Balance (1)RV7 = Carrier Balance (2)RV8 = = SSB Modulation Adjust

RV9 = AMModulation AMC AdjustRVIO = SSB TX ALC (power) AdjustRV501 = Ant. Warning Ind. AdjustVRI =AM Power AdjustReceive Adj ust = 1'8, T9, T J 0, 1'11(10.3965 Level Adj.), T12Transmit Adjust= TI, 1'2, T::l ,T11(IO.3965 Level Adj.), T~, 1'5, 1'6, 1 '7, LIO, LI4, LI6 (AdjustihesecoilsfodIRXil1lumpowel"{)D USB)

CB TUNE-UP /vfANUAL Master Edit ion Vol . 6[34]


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ST- lOOO IHCAB18RV-2 = RX "8" Meter Adjust RV-S = Squelch Range Adjust CTl = 10_240 Xtal AdjustReceive Adjust =Tl, T2, T3, T4, T5Transmit Adjust = T7, T8, T9, L4

12 1 (EFT 1201J2Z Board)VRI =.AM: "8" MeterVR4 = AM Squelch Range~ 1:: FM Deviation

VR8 = RF Transmit MeterVR12 =Lo Pwr Modulation AdjustVR13 =AM High Power AdjustVRl4-= HiPwr Modulation AdjustVRI6 = AM LoPower Adjust

Receive Adjust =Ll, L2, La, U, L5, L6, L7, LBTransmit Adjust =L44, L43, L42, L3SJ A (EPT OOJA JOZ C i rc u it Board)VRl = AM " S O MeterVR 2 = AM Squelch RangeVR4 = Carrier BalanceVR5 = FM Deviation

VR6 =Transmit Frequency AdjustVRB = ALC 8SB PowerVR9 = Final TX Bias Adjust (1)VRIO = Driver TXBias AdjWlt

VRll =AM High Power AdjustVRI2 =AM Modulation AMC Adjust

Receive Adjust = L3, L5, 16, L7, LB, L9Transmit Adjust = L44, LAS , lAI, lA2, lAO, US , L31, L30

220RVI = RX "8" Meter Adjust RV2 = Squelch Range Adjust RV3 = AM Modulation AMC AdjustReceive Adjust = TI, T2, Ta, T4, ToTransmit Adjust >T8, T9, TIO, L10, Ln, L12, L13

730VRI :::Modulation AMC adjustVR2 = Receive AGC Adjust VR3 = RX "8" Meter AdjustVR4 :: TX Meter Adjust VR5 = Squelch Range AdjWltVR6:: Transmit Power AdjustReceive Adjust:: T204, T205, T206, T207, T20S, T209, T210, T211Transmit Adjust =T214, 1.204, CV10l, 1205

JC-2204VR501 = FM DeviationVR6020: Transmit Meter Adjust VR602 =RX O S " Meter AdjustVR60S = Squelch Range Adjust VR603 = AMModulation AMC AdjustVR701== Modulation Meter AdjustReceive Adjust'" T30I, T802, T30S, T304, Ta05Transmit Adjust = T201, L203, L204, L206

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CB 1VNE-UP MANUAL Master Edition Vol. 6

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[36]


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01994 g?"Mma.. fP~ (217) se -11210[37]

cs T UN EU P M AN UA L MOSIer Edition V ol. 6

master mods volume 6

Documents

channel conversion chart

rotary channel conversion

frequency channel chart

galaxy pluto ept

galaxy ox

superstar ja ept ooja10z

galaxy mirage

galaxy saturn