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NA100 NA200 NA300

Nautel NA100, NA200 & NA300 Quick Specs

• Fieldtunabletoanyfrequencyinthe

mediumwaveband

• ExtraheadroomforDRMdigital

operation

• 145%positivepeakmodulation

at100kWfortheNA100;

200kw(NA200).125%positive

peakmodulationat300kWfor

theNA300.

• 1.5:1VSWRthresholdat100kW,

100%modulationfortheNA100

• 1.3:1VSWRthreshold,100%

modulationat200kw(NA200);

100%modulation,300kWfor

theNA300.

• Hot–pluggablepowermodules

• DualDDSSynthesizersand

modulationencoderswithautomatic

changeover

NA series dimensions

• NA100

1.87mHx3.76mWx.87D

• NA200

1.87mHx5.47mWx.87D

• NA300

1.87mHx8.38mWx.87D

The NA series transmitters are field proven with installations in very harsh environments all over the world. Tens of millions of hours of real-world operational experience have gone into the design and construction of the NA series. The result is unparalleled performance and reliability.

Over-engineering gives the NA series not only impressive performance but also incredible reliability. The NA series’ load sharing power modules (40 in the NA300) provide a transient-free fallback if a power module shuts down. The NA series transmitters stay on the air even if multiple power modules fail.

Modules are hot-pluggable, letting you service the transmitter without going off the air. For even greater on-air confidence, the NA series includes a complete standby DDS exciter and modulation encoder that automatically takes over when it detects a problem. The NA series transmitters even include redundant cooling fans.

The high overall efficiency and low power consumption of the NA series transmitters reduces operating costs. Very low waste heat keeps ventilation simple and results in cool, reliable operation.

The NA series transmitters are field proven in digital DRM transmission facilities. The transmitters have evolved to offering the installer plug-and-play solutions to DRM broadcasting needs.

The NA series frequency agile design provides the user the flexibility to re-task the transmitter to any frequency in the medium wave AM band.

Whether opening a new facility or updating an existing one, discriminating broadcasters demand the performance excellence and reliability of Nautel’s NA series Medium Wave frequency agile transmitters.

Making Digital Radio Work.

NA100/NA200/NA300

PowerfUl BUildinG BlocksThebuildingblockoftheNAseriesisapowermoduleintegratingfour

modulatorunitsandeightRFamplifierunitswithacombinedoutputrating

of8.3kW.Thesepowermodulesplugintothefrontofthetransmitter,

makingserviceeasy.

TheindividualRFamplifierandmodulatorunitsareconnectedinthe

powermodulesusingplug-inindustrystandard“D”connectorsandbolted

directlytotheheatsink.Servicingconsistsofsimpleexchange,usingonlya

screwdriver.Componentlevelrepaircanbeperformedattheworkbenchor

atacentralservicedepot.Theseplug-inRFamplifierandmodulator

unitsarelowcost,andcanbeeconomicallyreplacedwithouttheneed

fortroubleshooting.

VentilationisprovidedbyredundantbrushlessDC-poweredfansmounted

inremovabletraysbelowthepowermodules.AirflowisunaffectedbyAC

supplyvariations,ensuringcooloperationandlongtermreliability.

NA Series power module

NA Series Frequency Agile Medium Wave Broadcast Transmitters

NA100/NA200/NA300 NA Series Frequency Agile Medium Wave Broadcast Transmitters

Making Digital Radio Work.

on-air serviceaBility

NASeriestransmittersareruggedlyengineeredtoprovideeasyon-airserviceandmaintenance.IntheNA100,128amplifiersin16powermodulescombinetodeliver110kW.IntheNA200,192amplifiersin24powermodulescombinetodeliver200kW.IntheNA300,320amplifiersin40powermodulescombinetodeliver300kW.Atallpowerandmodulationlevels,allmodulescontributeequallytothefinaloutput.Ifanamplifierfails,operationcontinuesataslightlyreducedpower.Nostressisimposedontheremainingmodulesandspectralintegrityisnotcompromised.Repairorreplacementcanbeperformedwheneveritisconvenient.

Nautel’spatentedparallelnetworkcombineroffersimportantadvantagesoverconventionalseriesorbalancedcombiners.Thetechniqueisefficientandprovidessuperiorfailureisolation.Nodamagetothecombinercanbecausedbyafailureofamoduleineithershortoropencircuitmode.Apowermodulecanberemovedfromthetransmitterwhiletheremainingmodulescontinuetooperate.Thismeansthatservicemaybeperformedduringnormalhourswithoutamoment’sinterruptioninbroadcasting.

aUtomatic standBy

Themostcriticalpartofatransmitteristheexcitersection,whichprovidescoherentdrivetothepowermodules.TheselowlevelcircuitsgeneratetheRFcarrierandmodulationcontrolsignals.AuniquefeatureofNauteltransmittersisthecompleteduplicationofthesecircuits.ShouldafailureoccurintheRFdriveormodulatordrive,thetransmitterautomaticallyswitchesovertothebuilt-instandbyDDSexciterandmodulationencoder.Thisdramaticallyenhancesthealreadyhighoperationalreliabilityinherentinthemodularsolid-statedesign.

Unattended oPeration

NAseriestransmittersarebuilttostayontheairwithouthumansupervision.TheNA100maintainsoutputwith100%modulationevenwithanantennamismatchof1.5:1VSWR.WithmoreextremeVSWR,powerisautomaticallyreducedtoasafelevel.AuniquecircuitdynamicallystabilizespoweragainstAClinevoltagevariations.AfteranACpowerloss,overvoltageorRFoverload,prioroperatingstatusisautomaticallyrestored.TheNAseriesisideallysuitedforunattendedautomaticorremotecontrolledoperation.

oPeratinG convenience

TheNAseriesusesintuitivelyplacedcontrolsforeasyselectionofcriticaloperatingparameters.Threepresetpowerlevelselectionsareprovidedeachwithcontinuousadjustmentovertheirpowerrange.AconvenientLEDdiagnosticstatusflowdiagramcontinuallymonitorsthesystemandprovidesavisualindicationforthelocationofanytransmitterfaultthatmayoccur.ThreelargeanalogmetersprovideeasytoreadindicationsforRFpowerandalltransmitterpowersupplyvoltages.Anaudiblealarm,completewithlocalmute,isprovidedtoensurelocaloperatorsareimmediatelynotifiedofanytransmitterproblems.

Making Digital Radio Work.

P o w e r f U l , a G i l e & e f f i c i e n tNautelNAseriessolidstateAMtransmittersareavailableasstandalone

unitsupto300kW.Higherpowerrequirementscanbemetbycombining

transmittersutilizingcustommethodstomeetcustomerspecificneeds.

Allaredesignedforfastsimplefrequencychangecapabilitywithoutthe

needofspecialtoolsorexternaltestequipment.Transmitterscanbefield

tunedtomeetfullperformancespecificationsthatmatchorsupercedethe

bestavailableinanymoderntransmitter.

safety first

TheNAseriestransmittersarefittedwithlockedpanelsthatutilizeakeycontrolledaccessprotocolforservicinghighvoltagecomponents.ThisensuresasafeenvironmentformaintenancepeoplebyremovingACandRFpower

fromthetransmitterbeforeservicing.

low cost of ownershiP

Veryhighefficiencyandlowmaintenanceoverheadmakethistransmitterextremelycosteffectivetoownandoperate.Overallefficiencyistypically84%orbetter.Thisprovidessignificantsavingsbyreducingbothtotalpowerconsumptionandthepeakdemand.Thehighefficiencymeanslessenergyiswastedasheat,whichreducescoolingandventilationcosts.Redundancyfeaturesandprotectionsystemsmaintainoperationwithoutasiteengineer,reducingyouroperating

costsevenfurther.

diGital Performance advantaGes

NAseriestransmittershavebeenspecificallydesignedtosupportthedigitaltransmissionformatsnowavailableandbeingdevelopedforuseonexistingAMchannels.TheNautelInterphasePulseDurationModulatoremploysanultralinearextendedbandfilterthatmaintainsanenvelopebandwidthfarbeyondtypicalmediumwaveaudiorequirements.ThetransmitterdesignhasbeenoptimizedtoensureminimalIPM.ThisprovidessuperiorModulationErrorRates(MER)whentransmittingadigitallyencodedsignalusingdigitalmodulationtechniquessuchasDRM.Thecombinationofdigitalcompatibility,performanceandflexibilty.

NA100 with doors off

OnlineaccesstoNautel’srestrictedNUG(NautelUsersGroup)website:

Unlock a world of information. Join the nUG.MembershipintheNautelUsersGroupisanexcellentwaytoreceivetechnicalcontent,educationandinformationontheNautelplatforms,productsandtechnologiesthatyouareinterestedin.

www.nautel.com/nug.aspx

Nautel installed medium wave AM transmitters

Nautel Limited ISO9001 Registered 10089 Peggy’s Cove Road Hackett’s Cove, Nova Scotia Canada B3Z 3J4

Phone: +1.902.823.2233

Nautel Inc. ISO9001 Registered 201 Target Industrial Circle Bangor, Maine USA 04401

Fax: +1.902.823.3183

For further information, please contact us at:

info@nautel.com | www.nautel.com

Making Digital Radio Work.Issue 1.0/Oct 31/2006

NA100

G E N E R A L

Transmitter TypeMedium wave, 100% solid state

ConfigurationSixteen RF power modules each including eight broadband RF amplifiers and four modulators

Dual DDS exciters and modulation encoders Full automatic changeover

RF Output PowerMaximum: 110 kW

Range: 10 kW to 110 kW

Three programmable preset power level profiles, selectable locally or remotely

Output level stabilized against AC supply voltage variations

External carrier control interface

Optional Dynamic Carrier Control system

RF Output Connection3 1/8 to 6 1/8 EIA female

RF Output Impedance50 ohms, unbalanced

Efficiency85% to 88% typical at 100 kW

RF Load VSWRNominal 1.1:1 VSWR, maximum 1.5:1 Sideband VSWR up to 2:1 with carrier frequency impedance of 50 +/-jO ohms System performance will be degraded

Frequency Range 531 kHz to 1,620 kHz. Supplied with all components necessary to quickly field tune to any frequency in the band

Frequency Stability±4 Hz over temperature range

Modulation TypeNautel Interphase Pulse Width Modulator

Modulation Capability140% positive peak modulation to 100 kW 125% positive peak modulation to 110 kW

Spurious and Harmonic80 dB or more below carrier at 100 kW

A C I N P U T

Voltage360 V to 500 V, 3 phase, 50 Hz or 60 Hz to customer specifications

Power Supply Variation ±10% voltage, 47 Hz to 63 Hz

Power Consumption118 kW typical at 100 kW, 0% modulation 176 kW typical at 100 kW, 100% modulation

Power Factor0.98 typical

E N V I R O N M E N T A L

Temperature Range0°C to +50°C Derate 3°C per 500 m above sea level (2°C per 1,000 ft)

Humidity Range0% to 95% non-condensing

Altitude 0 m to 4,000 m (0 ft to 13,000 ft)

Cooling Air Requirements6,120 m3/hr (3,600 CFM)

S A F E T YMeets IEC 215

P H Y S I C A L

Dimensions186.7 cm H x 376 cm W x 87.4 cm D (73.5" H x 148" W x 34.5" D)

Weight2,025 kg (4,464 lbs)

TECHNICAL SUMMARY ISSUE 2 .0

www.nautel.com | info@nautel.com

NA100

A U D I O P E R F O R M A N C E

Audio Input 600 ohms balanced

+10 dBm nominal (adjustable from 0 dBm to +12 dBm for 100% modulation)

Frequency Response+0.2 dB/-0.8 dB, 30 Hz to 10,000 Hz. Referenced at 1 kHz

Optional audio input filters available to meet regional bandwidth restrictions

Total Harmonic DistortionBetter than 1% (THD), 30 Hz to 10,000 Hz at 95% modulation

Intermodulation Distortion1.0% or less at 100 kW, 60/7000 Hz, 1:1 ratio SMPTE standards at 85% modulation

Square Wave Overshoot1.0% at 400 Hz (100 µS risetime)

Square Wave Tilt1% or less at 40 Hz

Carrier Shift0.5% or less

Hum and Noise-65 dB or better below 100 kW 100% modulation

C O N T R O L A N D M O N I T O R I N G

MeteringForward Power/Reflected Power DC Input Current DC Voltages

StatusLED Diagnostic status flow diagram with self-test features

Remote ControlTransmitter ON/OFF

Selection of Exciter A or B, Automatic Changeover

Power Level selection HI, MED, LOW Power Adjust (full range, 0.1% resolution) Alarm Reset

Remote MonitoringForward Power/Reflected Power DC Input Current DC Voltages Status of Critical Parameters

Notes:Specficiations defined in a laboratory environment with high grade source and demodulation equipment. Standard factory measurement does not include all items.

SPECIF ICATIONS SUBJECT TO CHANGE

WITHOUT NOTICE.

TECHNICAL SUMMARY ISSUE 2 .0

www.nautel.com | info@nautel.com