AN-GRC-106A_serv_TM11-5820-520-34_1972.pdf

《AN-GRC-106A_serv_TM11-5820-520-34_1972.pdf》由会员分享，可在线阅读，更多相关《AN-GRC-106A_serv_TM11-5820-520-34_1972.pdf（371页珍藏版）》请在收音机爱好者资料库上搜索。

1、1M11-5820-520-34 TECHNICALMANUAL I. I DIRECTSUPPORTANDGENERALSUPPORT MAINTENANCEMANUAL RADIOSETAN/GRC-l06 (FSN5820-402-2263) AND RADIOSETAN/GRC-l06A (FSN5820-223-7548) ., HEADQUARTERS,DEPARTMENTOFTHEARMY FEBRUARY1972 WARNING DANGEROUSVOLTAGESEXISTINTHrSEQUIPMENT Voltages ashighas128 volts AC,3,()00v

2、olts DC, and 10,000 voltsrfrareused intheoperationof Amplifier, Radio Frequency AM-3349/GRC-106. DANGEROUSVOLTAGESEXrSTAfTHEAM-3349/GRC-106 50-OHMAND WHIP ANTENNA CONNECTORS Becarefulwhen workingaroundtheantennaorantennaconnectors. Radio frequency voltagesashigh as10,000 v,oltsexistatthese points.Op

3、eratorandmaintenance personnel should befamiliarwiththe requirementsofToBSIG29,1befolleattemptinginstallationoroperationofRadioSetAN/GRC- 106(*). ID:EATHONCONTACT mayresultifoperatingpersonnelfraHto observesafetyprecautionsandfollow requirementsofTB SIG 291 DO NOTTAKECHANCES! CAUTION Before connecti

4、ng power leads tothepower source, :turn Receiver-Transmitter, RadioRT-662/GRC- W6orRT-834/GRC-106SERVICESELECTORswitJchandAmplifier, Radio Frequency AM-3349/ GRC-1Or6PRIM.PWR.switch to OFF. Makesurethatploper polarity of power c,onnections isob- served.Transistorsinthisequipment will be damagedifpow

5、er Connectorsarereversed. Ifequipmenthasbeen opera1tingforlongerthan15minutes,donotturnitoffdirectlybutgo to a standbyfortwo minutes. ThiswiUallow chassis blowers to0001components sufficiently toprevent damage. . .TM11-5820-520-34 TECHNICALMANUAL No. 11-5820-520-34 HEADQUARTERS DEPARTMENT OFTHEARMY

6、WASHINGTON,D.C.,2February1972 DirectSupportandGeneralSupportMaintenanceManual RADIOSETAN/GRC-106IFSN5820-402-22631 AND RADIOSETAN/GRC-106AIFSN5820-223-7548) 4-1 4-1-4-34 Paragraphp. 1-1,1-21-1 1-3,1-41-1,1-4 il-5-.1-81-6-1-13 1-9-1-13 1_14_1_19 114-1-24,1-22-1-44 1-25,1-261-46,1-47 1-27,1-281.J51,1-

7、52 1-29-1-0;assembly 2A5A1,partslocationdiagram2-61 Filter00;0;assembly 2A5A1and2A5AIA2,partslocationdiagram24)2 Driverassembly 2A8, component location2-63 Statora!lsembly 2A9. comJ)ment location2-64 RT-662/GRCandRT-834/GRC,chassiscouplerandconnectorlocation24)6 RT-662/GRCandRT-83I/GRC,moduleandtest

8、point location24)7 Receiver-Transmitter,RadioRT;lncetestsetup4-12 TransmitterIFnnd audio module1.010.5,performancetestsetup4-17 Frequencydividers module 1A6,performancetestsetupR4-20 ReceiverIFModuleLA7,perfonnancetestsetup4-24 MH:.synthesizermodulelA9,performancetestsetup4-27 Receiver audio modulel

9、AtO,performancetestsetupR4-30 Dc-to-dcconverterandrelatormodulelAllI,performancetelttsetup-4-32 Antennacoupler assemblyA3,controlpositioning-4-35 Discriminatorassembly 2A4,perfonnancetestsetup-4-38 o)_3349/GRC_l06frontpanelassembly2.40.5,performancetestletup-4-45 Dc-to-acinverterAssembly2A6Al,perfor

10、mancetestsetup.4-47 Relaycontrol assembly 2.7,performancetestsetup4-48 AM-3349/GRC-I06driverassembly 2A8, schematicdiagram4-49 AM-3349/GR.C-I06,statora!lsembl) 2A9, schematicdiagram4-49 Antennacoupler aSlembly 2A3,camandcamfollowerdetail4-50 Antennacouplerassembly.2A8,p.t.T1:slocation,026removed4-51

11、 Resistors,inductors,andcapacitors,color codecharts4-63 Amplifier,RadioFrequencyAM-3349/GRC-106,functionalblockdiagram4-55 Antennacoupler assembly.!A3,tunin)! controls4-57 Level control lignals,interunitcircuitdetails4-59 Powercontrol,interunitcircuitdetails,AN/GRC-tOOC-)4-61 Keyinginterunitcircuitd

12、etailsforAN/GRC-106(*)4-63 TuninginterunitcircuitdetailsforAN/GRC-106(*)45 Amplifier,Ral!ioFrequencyAM-3349jGRC-106,turret assemblypartslocation4-67 Receiver-Tra:nsmitter,RadioRT-662/GRCandRT-834/GRC, vvaveformdiagram4-69 RFAmplifierModule1A12,exploded vievvpartslocationdiagram4-71 RT662/GRC(serialn

13、umbers1,through22:0)FR-36-009-B-6-3J1886(E) noiseblankerassembly1A1A-6,schematicdiagram4-73 Receiver-Transmitter,RadioRT62/GRCandRT-834/GRCinternal Alcassembly1A1A2A5,schematicdiagram4-75 Receiver-Transmitter,RadioRT-662/GRCandRT-l334/GRC, frontendprotectioncircuit1Arb:1A10,schematicdiagram4-77 Rece

14、iver-TIallsmitter,RadioRT-662/GRICfrontpanelandchassis 1A1, srohematicdiagram-4-79 Receiver-Transmitter,Riadio RT-8B4/GRC,frontpanelandchassis 1A1,schematicdiagram4-8,1 Receiver-Transmitter,RadioRT-662/GRCandRT-834/GRC, 100kHzsynthesizermodule:lA2,schematicdiagram:4-83 Receiver-Trarrtsmitter,RadioRT

15、-662/GRC,RT-l334/GRCfrequency standardmodule lA3,schematicdiagram4-85 Receiver-Transmitter,RadioRT-662/GRC(SerialNumbers1 through.220,OrderNo.FR-36-0139-B-6-31886(E)10and1kHz SynthesizerModule 1A4,schematicdiagram4-87 Receiver-Transmitter,RadioRT-6e2/GRC(serialnumber221and upvvard)OrderNo.FR-36-039-

16、B-6-31886(E)andRT-834/GRC, 10and1kHzsyn,thesizermodulelA4,schematicdiagram4-89 Receiver-Transmitter,RadioRT-62/GRCandRT-8314/GRC, transmitterIFamdaudiomodule1A5,schematicdiagram4-91 Receiver-Transmitter,RadioRT-6e2/GICandRT-834/GRC, frequencydividermodule 1A6,schematicdiagram4-93 Receiver-Transmitte

17、r,RadioRT66;2/GRCandRT-834/GRC, receiverIFmodule 1A7,schematicdiagram.4-95 Receiver-Transmitter,RadioRT-662/GRCandRT-834/GRC, translatormodule1A8,schematicdiagram4-97 Receiver-Transmitter,RadioRT-662/GRCandRT-l334/GRC,MHz synthesizermodulator1A9,schematicdiagram4-99 Receiver-Transmitter,RadioRT-662/

18、GRCandRT-834/GRC,receiver audiomodule lAlO,schematicdiag-ram4-101 Receiver-Transmitter,RadioRT-662/GRCandRT-834/GRC,dc-to-dc converterandregulatormodule 1A11,schematicdiagram4-103 Receiver-Transmitter,RadioRT-662/GRJCandRT-834/GRC,RF amplifiermodule 1A12,schematicdiagram-4-105 Receiver-Transmitter,R

19、adioRT-834/GRC,100HzModule 1AlA;2A8, schemPECTRUM t.75MHZ FREQUENCY 48-2.51MHZ) DIVIDER 1KHZPULSES MODULE 1KHZPULSES A6 Figure1-1.Rectiver-TransmitterRadioRT-66f/GRC,trons-mit Qperal10l/, unctiOllo/ block diagram. JWATTNOMINAL RF OUTPUTTO AMPLIFIER, RAOIO FREQUENCY AM-33491GRC106 TMSBlO-S20- 35-601

20、I A is applied to the balancedmodulatorinreceiver IFmoduleiA?A 1.75megahertz(MHz) out- putfromfrequencydividermodulelA6is also appliedtothebalanced modulator. Mixing these twoinputsinthebalancedmodulatorproduces a modulated1.75MHzdouble-sideband,sup pressedcarrierIFoutput.Thisoutputpasses throughacr

21、ystalfilter,(partofreceiverIFmod ulelA7)which removesthelower sideband,fur- therattenuatesthecarrier,andestablishesthe bandwidthoftheuppersidebandat3.2 kHz. c.The1.75MHzuppersidebandIFoutput fromthecrystalfilterreceiverIFmodulelA7is appliedtotheIFportion oftransmitterIFand audio modulelA5andtotherec

22、eiverIFcircuits. Duringcwtransmission,thereceiveIFcircuits areenergized (paral-4c)to allowthetransmit IFsignalto be demodulatedandapplied tore ceiver audio module lAIO.Thisprovides a side- toneformonitoringcwtransmissions.TheIF portionoftransmitterIFandaudio module lAG providesthenecessaryIFamplific

23、ation. Theam plificationstagesarecontrolledbyautomatic levelcontrol(alc)signalsthataredeveloped fromamodulateddirectcUlTent (dc)control voltagefromAmplifier, RadioFrequencyAM- 3349/GRC-106orfrominternalalc assembly lAIA2A5.Theinternalalc signal is normally used only whentheAM-3349/GRC-I06is not func

24、tioning.Theinternalale is always present, butthenormalcontrol fromtheAM-3349/GRC- 106 setstheradiofrequency(rt)outputlevel be- lowtheinternalalc threshold. In compatibleam operation,the1.75 MHz localcarrieris rein- sertedintothesignalpathintheIFportion of transmitterIFandaudio modulelA5.The level of

25、thereinsertedcarrieris controlled bytheaver- agepowercontrol(apc)portion ofthesignal applied fromtheAM-3349/GRC-l06(para1- 61). The modulation portion ofthecompatible amsignal is controlled bythepeak-power control (ppc)portion of the signal appliedfromthe AM-3349/GRC-I06(para1-60). d.The amplified 1

26、.75 MHzIFuppersideband outputfromtheIFportionoftransmitterIFand audio modulelA5is applied to a low-frequency (If)mixerintranslatormoduleIA8(para1-7). TranslatormoduleIA8convertsthe1.75 MHz IFsignalintotheselectedoperatingrf.Thisis accomplishedthrougha seriesofmixingpro- cesses.Inthe1mixer, the 1.75

27、MHzIFis sub- tractivelymixed with one oftheinjectionfre- quencies (4.551 to 4.650MHz)from10and1 kHzsynthesizermodulelA4toproduce a second 2.8 to 2.9 MHzIFsignal.Thissignalis applied TM11-5820-520-34 toa medium-frequency(mf)mixerandsubtrac- tively mixedwithoneofthehi(32.4 to 33.3 MHz)or10(22.4 to 23.

28、3 MHz)injection fre- quenciesfrom100kHzsynthesizermodulelA2. ThismixingplOduces athirdIFbetween 19.5 and20.5 MHz(hi).Theuseofeitherthehior 10injection isdeterminedbythesettingsofthe receiver-transmitterfrontpanel frequency con- trols(para1-20).Thehi/losignalfromMHz synthesizermodule 1A9 also control

29、s the selec- tion ofappropriatefilters.Thehighorlowthird IFsignalis applied to a high-frequency(hf) mixerandis mixedwithone oftheinjectionfre- quencies (2.5 to 23.5 MHz) from MHz synthe- sizer moduleIA9. e.Therfoutputploduetsfromtranslatormod- ule 1A8areapplied torfamplifiermodule 1A12. This module

30、consists oftwovacuum-tubestages ofamplificationwithhighly selectivetunedin- putandoutputcircuits.Thetransformersanda portion ofthecapacitancerequiredbytheseinput andoutputcircuitsarecontained on a motor- driventunetthatisactivatedbythefrontpanel frequency controls(para1-26).Disks. holding fixedcapac

31、itorsthatsupplytheremainingcapaci- tancerequiredinthetunedinputandoutputcir- cuitsata given frequency,aremechanically posi- tioned bythe100kHzand10kHzdigital con- trols.Thehighly selectivetunerinputandoutput circuitsrejectunwantedsignalsandallharmonic outputsfromtranslatormodule 1A8,exceptthe onetha

32、trepresentstheexactsettingof the MHz andkHzcontrols.ThisIfsignal is amplified to a nominal 0.1wattpeak envelope power (pep.) outputandapplieddirectlythroughtherfoutput relayandintelllal ALC assembly1AIA2A5to Amplifier,RadioFrequencyAM-3349/GRC- 106. f.Thegenerationof themixingfrequencies fortranslat

33、ormoduleIA8is accomplished indio rectlybyfrequencystandardmodulelA3,fre- quencydividermodulelA6,and100 Hz synthe- sizeranddirectlyby MHzsynthesizermodule 1A9, 100kHzsynthesizermodulelA2,and10 and1kHzsynthesizermodulelA4.Frequency standardmodulelA3producesanaccurateand stable 5 MHz reference frequenc

34、y to which all otherfrequencies usedinreceiver-transmitter, aresynchronized.Frequencystandardmodule lA3producesfouroutputs:500 kHz, 1 MHz, 5 MHz,and10MHz.The500kHzoutputis ap- pliedtoFrequencydividermodulelA6to clevel opfouradditionaloutputsignalsasfollows: 1.75 MHzformodulation in all modes ofopera

35、tion andlocalcarrierreinsertionin compatibleamop- 1-3 TM11-S820-S2().;34 eration; a 1 kHz pulsedoutputforuse intrans- mitterIFand audio modulelA5(aabove),10 andI kHzsynthesizermodulelA4,and 100 Hz synthesizerintheRT-834/GRConly;a2.48 MHz to 2.57 MHz (10 kHz)spectrumforuse in 10and1kHzsynthesizer mod

36、ulelA4;anda 15.3to16.2 MHz (100kHz)spectrumforuse in 100 kHzsynthesizermodule lA2. The 1 MHz outputfrom frequencystandardmodulelA3is applied to MHzsynthesizermodulelA9tolock itsoutputattherequired frequency.The5 MHz outputis availableatthefrontpanelforrefer- ence ofexternaluse. The 10.MHzoutputis ap

37、- plied ,to 100 kHzsynthesizermodulelA2.The 10and1 kHz synthesizel module, 1A4, produces twooutputsasfollows: a 4.551 to 4.650 MHz mixing frequency(outputdeterminedbysetting the 10 kHzand1kHzcontrols)forlise intrans- latormodulelAS(dabove);anda 7.1 MHz (7.089 MHzRT-834/GRC)signalforuse in 100 kHz sy

38、nthesizer module.The100 kHz synthe- sizer modulelA2,the7.1 MHz signalfrom10 and1 kHzsynthesizermodulelA4,the10MHz outputfrom frequencystandardmodulelA3,and the100 kHzspectrumoutputfrom frequency di- viders modulelA6,aremixed withtheoutput from an oscillatorthefrequencyofwhich is de- terminedbytheset

39、tingof100 kHz control.This mixingproducestwobandsoffrequenciesforuse intranslatormodulelAS(dabove).Theselec- tionofeitherthehior10band is determined by thehi/losignal from MHz synthesizer module IA9.Thishi/losignal is also applied totransla- tormoduleIA8(dabove).MHzsynthesizer modulelA9also produces

40、 a band ofmixingfre- quenciesforuse intranslatormodulelA8(d above). 1-4.ReceiveOperation,Functional, Description (fig.1-2) NOTE TheIFandinjection frequencies used inthefollowing discussionareapplica- ble totheRT-662/GRC only. Referto section V(para.1-22through1-24) fortheRT-834/GRCfrequency synthe-

41、sis. a.Thereceiverfsignalisapplied torfAmpli- fiermodule lA12.Thesamerfamplifiermodule lA12circuits used intransmitoperation(para 1-3e)areused in receive operation.Thetwo tunedamplifierstagesareused toraisethelevel oftheincomingrfsignal and providetheselec- 1-4 tivity requiredtoreduceadjacentchannel

42、inter- ference, increase image rejection, andprevent cross-modulation.Manualandautomaticgain controloftheamplifiersisprovided by Receiver IFmodule lA7. b.Theamplifierrfoutputfromrfamplifier modulelAl2is appliedtotranslatormodule lAS, whereitis converted to a 1.75 MHzIFsig- nal bytripleconversion.Thi

43、sconversion is essen- tiallythesameasthatdescribed inparagraph1- 3d,exceptthatthesequence is reversed.Thein- putis applied tothehigh frequency(hf)mixer, the medium frequency(mt)mixer, and finally to thelow frequency (If) mixer. The mixing fre- quencies usedaredevelopedinMHz Synthesizer module IA9, 1

44、00 kHz synthesizer moduleIA2 and10and1 kHz synthesizer module 1A4, re- spectively. Theresultofthe final mixing isthe 1.75 MHzIFupper-sideband signaL c.The 1.75 MHzIFsignal is applied tothe samecrystalfilterin ReceiverIFmoduleIA7 thatis usedduringtransmitoperation.Thein- puttothefilteris determined b

45、y diodeswitching circuits.Thefilteris used to establishthedesired 3.2 kHzbandwidthfortheIFsignal. An auto- maticgaincontrol (agc) voltage is developed in receiverIFmodulelA7andis appliedtorfam- plifier module lA12.Theage is also usedwithin receiverIFmodulelA7tocontrolthegainofthe receiverIFamplifier

46、stages. A Jocked(tothe5 MHz frequencystandard)1.75 MHz localcarrier fromfrequency dividers modulelA6orthevari- able beat-frequency oscillator (bfo) signal (gen- erated in receiverIFmodulelA7)is used to de- modulatethe1.75 MHzuppersidebandIFsig- nal. The useofthevariable bfo signal allowsthe operator

47、tovarythetone 3.5 kHzduringcw op- eration. The demodulated audio information is then amplifiedinReceiver Audio module IAlO. Duringcwtransmitoperation, receiverIFand re- ceiver audio modules(lA7andIAlO)areener- gized(para1-3e) to provide a sidetonetomoni torthecw keying. d.TheoutputfromreceiverIFmodu

48、lelA7is appliedthroughtheAUDIO GAIN controlto receiver audio module lAIO whereitis amplified andappliedtothefrontpanel AUDIO connec- tors. A squelchcircuitis provided in receiver audio modulelAlOtosquelch background noise intheabsenceofvoiceduringssborcompatible am operation. Receiver audio module I

49、A10 pro- vides twooutputs:2wattsfordrivingdynamic LoudspeakerLS-166/U,and 10 milliwattsfor HeadsetH-227/UorHandsetH-33(*)/PTuse. ( RFINPUT AGeVOLTAGE RFAMPLIFIERTRANSLATOR 1.7MHZ P/ORECEIVER RECEIVER AUDIO AUDIO f- MODULEMODULEIF.MODULE MODULE lAll A7lAID 2.5-23.5MHZ 1.15MHI (DEMODULATION) le-ANDI-KHZ 4.551-4.650MHZSYNTHESIZER MODULE A4 Ill-32.4-33.3MHZ 7.1MHZ1 - LO-22.4-23.31.1112 loo-KHZ SYNTHESIZER HI-LDSIGNAL SYNTHESIZER MODULE 10MHZ MODULE , 1Mill 100KCSPECTRUM (15.3-16.2MHZl 10KeSPECTR (1.48Z,57MH FREQUENC,/,