Hammarlund_SP-600-JX_user_AN16-45-221_1952.pdf

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1、?/df-,/7-/ -*-.:.-_7-.;.-_. AN16-45-221 HANDBOOK OPERATING INSTRUCTIONS RADIORECEIVER MODELSP-600-JX (HAMMARlUND MFG.) PUBLISHEDUNDERAUTHORITYOFTHESECRETARYOFTHEAIRFORCE -:,-.,.*- 0-23JUl523,20027JUNE1952 AN16-45-221 Reproductionfornon-militaryuseoftheinformationor illustrations c cationisnotpermitt

2、edwithoutspecific approvalofthe issuing serv ThepolicyforuseofClassified PublicationsisestablishedfortheAirF andfortheNavyinNavyRegulations,Article1509. ;r-L1STOFREVISEDPAGESISSUED- INSERTLATESTREVISED PAGES. DESTROYSUPERSEDEDPAGES. NOTE:Theportionofthetextaffected by the currentrevisionis indicated

3、 by a verticallineinthe0 :1:Theasteriskindicatespagesrevised,addedordeletedbythecurrent revision. ADDITIONALCOPIES OF THIS PUBLICATIONMAYBEOBTAINEDASFOLLOWS) USAFACTIVITIES.-InaccordancewithTechnicalOrderNo.0052. NAVALACTIVITIES.-UsePublicationsandI:ormsOrderBlank(NavAer2126)andsubmitrothenearestpub

4、lica tionssupplypointlistedbelow:NAS,Alameda,Calif.;NAS,Jacksonville,Fla.;NAS,Norfolk,Va.;NAS,SanDiego. Calif;NAS.Seattle,Wash.;NASD,ASO,Guam;N,SD,Philadelphia,Pa. ForlistingofavailablepublicationsseeNavalAeronauticPublicationsIndex(NavAer00.500). A AN16-45-221 TABLEOFCONTENTS SectionPageSectionPage

5、 GENERALDESCRIPTION2-15.CrystalFrequencyControl UnitOperation7 I-I.General12-16.DuringUse.B 1-6.Description12-17.FollowingUseB 1-11.OperationalTheory12-19.DescriptionofControls8 1-16.CapabilitiesandLimitations32-41.PresentationsandReadings11 2-42.TuningPresentation.11 IIOPERATINGPROCEDURES2-43.Meter

6、Readings.11 2-46.PrecautionstobeObserved11 2-1.SequenceofOperation.5 2-2.PriortoUse5IIIOPERATING CHECKS AND ADJUSTMENTS 2-3.MCWReception-Voice,Music, orTelegraph.53-1.General12 2-4.PreliminaryRequirements.53-3.PriortoOperation12 2-5.TuningProcedure.53-4.DuringOperation.12 2-6.AdjustmentsUnderNoisy3-

7、5.PrecautionstobeObserved12 Conditions5 2-7.AdjustmentsSuitableto aIVEMERGENCYOPERATIONANDREPAIR WeakSignal6 2-8.CrystalFrequencyControl4-1.OtherThanNormalOperation12 UnitOperation64-2.AntennaSystem.12 2-9.SuppressedCarrierReception64-3.ElectronTubeComplement12 2-10.CWReception-Telegraph64-4.Replace

8、mentorRepair12 2-11.PreliminaryRequirements.64-5.PilotLamps12 2-12.TuningProcedure.74-6.ElectronTubes.13 2-13.AdjustmentsUnderNoisy4-10.Crystals.14 Conditions74-12.3-ampFuse14 2-14.AdjustmentsSuitableto a Weak4-13.3/8-ampFuse14 Signal7 . LISTOFILLUSTRATIONS Figure 1-1 1-2 RadioReceiver,ModelSP-600-

9、JXRackMountings. RadioReceiver,FrontPanel Identification. Page ii 2 Figure 1-3 2-1 2-2 RadioReceiver,RearApron Identification. OperatingDataForm. RadioReceiver,TopView ofChassis Page 4 8 10 Table LISTOFTABLES Page 2-1DecibelConversionChart 4-1ChartforOtherThanNormal Operation. 11 13 SectionIAN16-45-

10、221 ii Figure1-1.RadioReceiver,ModelSP-600-JXRackMountings AN16-45-221 SECTION I GENERAL DESCRIPTION SectionI Paragraphs1-1to1-12 1-1.GENERAL. 1-2.RadioReceiver,ModelSP-600-JXrackmount- ings(Seefigure1-1.),ismanufacturedbytheHammar- lundManufacturingCo.Inc.,NewYork,N.Y.The receiverisa20-tuberadiocom

11、municationsreceiver designedfordirectmountingin astandard19-inch relayrack.Itcomprisesachassiswith alightgrey frontpanel,atopcover,and abottomplate. 1-3.Thereceiverhasaself-containedpowersupply designedtooperatefromasinglephase,90to270 volt,50-to60-cps,a-csource.Thepowertrans- formerprimaryandsecond

12、aryareeachseparately fused,theprimaryby athreeamperefusecontained in afuseholderlocatedohtherearapronandthehigh voltagesecondaryby athree-eighthsamperepigtail typefusesolderedbetweenthetransformerterminal 11andchassisground.Thebottomplateofthere- ceivermustberemovedtogetatthepigtailtypefuse. CAUTION

13、 Maintainthefusecomplementtopreventdam- age. 1-4.Toprovideforreception,auxiliarycomponents areassociatedwiththeradioreceiver.Theseusually compriseaheadsetand/ora loudspeaker,butfre- quencyshiftreceiverconverterequipmentand/or teleprinterortaperecordingequipmentmayalsobe usedwiththereceiver.Alloperat

14、ionalactivitiesre- quiretheuseofanantennawhichisconnectedtothe antennainputconnector(See 11,figure1-3.),atthe toprearofthereceiverchassis.Apartfromthe PHONESjack(See 1,figure1-2.),containedinthe frontpanel,allthereceiverauxiliarycomponent connectingmeansarelocatedontherearapron(See figure1-3.).There

15、arapronalsocontainsanAC outlet(See 1,figure1-3.),foranelectriclampor clockand a PHONOinlet(See 2,figure1-3.),for arecordplayerattachment,allof whichmustbe suitedtooperatefromtheavailablea-csource. 1-5.Thereceiverprovidesforthereceptionofam- plitude-modulated,keyed,andfrequency-shiftcar- rierintellig

16、encesignals.Intheinstanceofvoice- frequencyorlow-speedtelegraphsignals,aheadset maybepluggedinthePHONESjack(See 1,figure 1-2.),containedinthefrontpaneland/oraloud speakerconnectedtotheAUDIOOUTPUTterminals (See 3,figure1-3.),ontherearapron.Inthein- stanceofteleprinterorhigh-speedtelegraphsignals, ate

17、leprinterorataperecordermustbeused.When thereceivedsignalisanamplitude-modulatedor keyedcarriersignal,therecordingequipmentis transmissionlineconnectedtotheAUDIOOUTPUT terminals,withthespeakerremoved.Whenthere- ceivedsignalisafrequency-shiftcarriersignalthe IFOUTPUTcableconnector(See 4,figure1-3.),

18、ontherearapronisconnectedbycoaxialcableto frequency-shiftreceiverconverterequipment.Indi- versityreceivingsystemsinvolving twoormorere- ceivers,eachreceiveriscableconnectedtothesy- stemthroughmeansofitsIFOUTPUTconnector. 1-6.DESCRIPTION. 1-7.Theradioreceiverprovidesforthesuperhet- erodynereceptionof

19、 anyradiofrequencycarrier withinits0.54to54.0mctuningrange.Allcarrier frequenciesareconvertedtoa 455 kcintermediate frequency,butthoseabove7.4mcareinitiallycon- vertedto3,955kcthroughasystemofdoublesuper- heterodyneconversion.ThereceiverprOVidesfor continuouslyvariabletuning,or,operationsmaybe carri

20、edQutatanypre-determilled,fixed,crystal controlledfrequency. 1-8.Thereceivermaybedesensitizedforprotection inthepresenceof astronglocalcarTier.ToprOVide againstthewidevariationsencounteredinthe strengthof anycarrierpicked uportunedin,ther-f gainisadjustedmanuallyandmaintainedwithinnar- rowlimitsthro

21、ughuseofasystemofautomatic volumecontrolincorporatedinthereceiver.Inthe presenceofacousticalnoise,theaudiogainismanu- allyadjustedtoprovideforcomfortable,intelligible reception. 1-9.ThereceiverprOVides achoiceofsixdegrees ofacceptancebandwidthorselectivitytothecarrier tunedin,thebandwidthchosenbeing

22、thatwhichpro- videsoptimumreceiverperformancefortheexisting qualityofthesignal.Also,interferingunwantedsig- nalsmaybephasedouttohighlyattenuatetheir strength.Anoiselimitereffectivelyeliminatesigni- tionnoise,andsimilarpulsenoise,fromtheaudio output. 1-10.Thereceivermaybeaccuratelytunedtothe desiredc

23、arrierandthestrengthofthecarriermeas- uredinrelationtoacarrierintensityof onemicro- volt.Theaudio outputmaybemeasuredinrelation tothestandardreferenceoutputofsixmilliwatts. 1-11.OPERATIONAL THEORY. 1-12.Thesixfrequencybandsofthereceiverpro- videforthecontinuouscoverageofthe0.54to54.0 mcfrequencyrang

24、e.Thefourr-fcoilassemblies foreachbandarecontainedin arotaryturretwhich isusedtochangebands.Themannerin which the coilassembliesforeachbandareplacedadjacentto theirrespectivesectionsoftheprecisefour-gang tuningcondenserassuresreceiversensitivitiesat highsignaltonoiseratios.Ananti-backlashgear- train

25、,usedfortuningprovidesforcalibrationaccur- 1 SectionIAN16-45-221 1.PHONESjack 2.SENDRECtoggleswitch 3.XTALScontrol 4.LIMITEROFFtoggleswitch 5.SELECTIVITYswitch 6.AVCMANtoggleswitch 7.AUDIO GAINcontrol 8.RFGAINcontrol 9.TUNING LOCKcontrol 10.BAND CHANGEcontrol 11.MEGACYCLESwindow 12.TUNINGcontrol 13.

26、BEATOSCcontrol 14.MODcwtoggleswitch 15.6.FREQCOI1trol 16.XTALPHASINGcontrol 17.Vernierdial 18.Maintuningdial 19.METERRFAFtoggleswitch 20.Meter 21.FREQCONTROL 22.Movablepointer 23.Fixedpointer 24.Vernierpointer 25.Plasticchart 2 Figure1-2.RadioReceiver,FrontPanelIdentification AN16-45-221SectionI Par

27、agraphs1-13to1-23 acyandcompletelyaccurateresetability,furtheren- ablingmaximumbenefittobederivedfromthecry- stalfiltercircuitincorporatedinthei-famplifierof thereceiver. 1-13.Thecrystalfrequencycontrolunitincorporat- edinthereceiverresultsintheultimateinfrequency stability,beingsuperiortothepractic

28、alprecision attainableforvariablefrequencytuning.Itsusepre- establishesthecommunicationchannel,evenwhen receivingconditionsarepoor,withoutnecessitating atimeconsumingsearchbytheoperator. 1-14.Thereceivermakesfulluseofsuperhetero- dynereceptionforanysignalwithinitsfrequency range,theoverallreceiverse

29、lectivitybeingessenti- allythatdevelopedinthe455 kci-famplifier.The useof3,955kc,fordoubleconversion,maintains highimagerejectionratiosabove7.4mc. 1-15.Ther-fsignalsectionofthereceiverpro- videsforanysignaltunedintobecomeavailableata highintensitylevelinrelationtothenoiseoriginating inthispartofther

30、eceiver.Thesignalisthensingle ordoubleconverted,alwaysproviding455 kci-finput tothei-fsectionofthereceiver.Thei-fsectionof thereceiverdevelopsthei-fsignaltothedesired selectivityattheproperamplification.Itprovides foramplitude-modulatedorkeyedcarriersignalsto becomeavailableasaudio outputandforfrequ

31、ency- shiftcarriersignalstobecomeavailableasi-fout- put.Thea-fsectionprovidesthea-fsignalasthe controllableaudio output ofthereceiver.Theself- containedpowersupplydevelopsallthed-canda-c supplyvoltagesusedbythereceiver,someofthed-c voltagesbeingregulatedtomaintainsensitivityand frequencystability. 1

32、-16.CAPABILITIES AND LIMITATIONS. 1-17.Theradioreceiverprovidesoptimumreceiver performancewhenproperlyinstalledandoperated. Itmaybeusedin fixedand/ormobileoperationssub- jecttowiderangesintemperatureandhumidity.Sub- sequenttoa15-minutewarmupperioditsfrequency stabilitycloselyapproachesthatof acrysta

33、l.Itin- corporatesadvanceddesignandshieldingtoreduce itsradiationcharacteristicstoapossibleminimum. Thisenablesthereceivertomaintainperformancein multi-receiverinstallationsandtocomplywithship- boardregulations.Thereceiverembodiesthenec- essarychassisrigiditytowithstandseverevibration andshock.Itisa

34、lsoadequatelytreatedwithfungi- cidalvarnishtoconditionitfortropicaluse. 1-18.Thereceiverisadaptabletoatwo-wayopera- tionalactivity.ThemanualSENDRECtoggle switch(See 2,figure1-2.),prOVidesnormalrecep- tionwhen intheRECpositionandinstantlydesen- sitizesthereceiverwhen intheSENDposiEon,the receiverpowe

35、rremainingonforbothpositionsof theswitch.ArelaymaybeconnectedtotheRELAY receptacle(See 5,figure1-3.),toenablea handmi- crophonetoperformtheswitchfunction. 1-19.Thecrystalfrequencycontrolunitincorporat- edinthereceiverprovidesforpre-determined,fix- edfrequency,crystalcontrolledchanneloperationat anyf

36、requencywithin the tuningrangeofthereceiver. Thereceiverisswitchedfroma condition prOViding forcontinuousvariabletuningtofixedfrequencyoper- ationbyturningthe XTALScontrol(See 3,figure 1-2.),fromitsYFOpositiontooneofitsother positionsdesignated1,2,3, 4, 5,or6, eachof whichisassociatedwith anumberedc

37、rystal holderlocatedatthe topfrontof thereceiver.The crystalholderchosenisfittedwith aseparatelyor- deredcrystalwhosefrequencyspecificationsuitsthe frequencyofthepre-determinedoperationalactivity. Inordering,thesignalfrequency,forwhich thecry- stalisintended,mustbespecified.Anyoneofthe orderedcrysta

38、lsmaybeusedinanyoneofthesix crystalholdersprovided.Whenthereceiverisused forthesamesignalfrequencyon fixedfrequencyop- erationasonvariablefrequencyoperationaslight retuningof thereceiverisdesirable. 1-20.Theinputtothereceiverprovidesforcoupling toabalanceddoubletantenna,the100-ohmmatching transmissi

39、onlineusedprOVidingflexibilityastothe relativelocationsofthereceiverandthedoubletan- tenna.A doubletantennaispreferredsinceitpro- videsgoodsignaltonoiseratioslnthepresenceof atmosphericand ignitionnoise.Astraightwirean- tennawhenusedisconnectedtooneterminalofthe antennainputconnectorwhoseothertermin

40、alisthen grounded. 1-21.Thereceivershieldingminimizesignitionand otherpulsetypenoise.ThenoiseLIMITEROFF toggleswitch(See 4,figure1-2.),maybeswitchedto itsLIMITERpositiontoby-passsuchnoisefrom theaudio outputofthereceiver.Thereceivermain- tainsa 10toonesignal-plus-noisetonoiseratioat itsoutputforsens

41、itivitiesoftwomicrovolts,orbet- ter.Thisprovidesforoptimumreceiverperformance inthepresenceof a weaksignaltunedinsincethe backgroundhissnoiseoriginatinginthefirstvac- uumtubeandpriorcircuitrydoesnotinterferewith reception. 1-22.ThereceiverSELECTIVITYswitch(See 5, figure1-2.),providesachoiceofthreeXT

42、ALand threeNON-XTALpositionsofreceiverselectivity, rangingfromSHARPtoBROAD,asindicatedon theswitchdial.Sincenoise,nomatteritsorigin,is ofthepulsetype,wherebyitcomprisesallfrequen- cies,thenoisetunedin with thesignalispassed,to theextentof theoverallacceptancebandwidthofthe receiver.Theselectivityswi

43、tchXTALpositions restrictthepassbandto0.2,0.5or1. 3kcwhile the NON-XTALpositionsrestrictthepassbandto3.0, 8.0,or13.0kc. 1-23.Thereceiveravcsystemisrenderedoperative bytheAYC MAN toggleswitch(See 6,figure1- 2.).In the AYCpositionthereceiveroutputre- mainsconstantwithin a 1:4voltageratiowhenthein- put

44、isincreasedfromtwoto200,000microvolts.The useof avcprecludesan audibleblastwhen tuning throughacarrierrelativelystrongcomparedtothe settingoftheAUDIO GAINcontrol(See 7,figure 1-2.),apartfromcompensatingforthepossiblefad- ingcharacteristicsofthesignaloverlongorshort 3 SectionIAN16-45-221 1.ACoutlet6.

45、BFOINJcontrol 2.PHONOinlet7.METERADJRF 3.AUDIOOUTPUTterminals8.METERADJAF 4.IFOUTPUTconnector9.SPAREFUSEholder 5.RELAYreceptacle10.FUSEholder 11.AntennaInputConnector Figure1-3.RadioReceiver,RearApronIdentification 4 AN16-45-221SectionI-II intervalsoftime. 1-24.Thereceivermaximumundistortedpowerout-

46、 putisapproximatelytwowattswiththeAUDIO GAIN control(See7,figure1-2.),fullon.Noclassof servicerequiresthisamountofoutputsothatthe AUDIO GAINcontrolisalwaysbacked-upsome- what. 1-25.Sincetheradioreceiverisasuperheterodyne .typeofreceiveracarrierfrequency,twicetheap- plicablei-ffrequencyhigherinfreque

47、ncythanthede- siredcarrierfrequencytunedin,isalsoconverted tothe455 kcor3,955kci-ffrequencyapplicablere- spectivelytosignalfrequenciesbelowand above7.4 mc.Thisimaefrequencyisrejectedbythere- ceivertotheextentthatwhenthedesiredsinal strengthat7.4mcisonemicrovolt,thestrengthof theimagefrequencywould h

48、avetobe4,000micro- voltstoproduceanequaleffectonthereceiver.At othersignalfrequenciesthestrengthoftheimage frequencywouldhavetobeevenmore.Also,when thereceiveristunedto600kc,a 455 kccarrierin- puttotheantennawouldhavetobe2700microvolts toproducethesameeffectasa onemicrovoltsignal at600kc.Forfrequenc

49、iesotherthan600kc,thisi-f rejectionratioisevenbetter. SECTION II OPERATING PROCEDURES CAUTION Inanemergencyturntheequipmentoff by pullingthereceiverpowercordplugfrom thea-cpowersource. 2-1.SEQUENCEOFOPERATION. 2-2.PRIORTOUSE.Theradioreceiverhasitsop- eratingcontrolsandswitchesadjustedtosuittheop- erationalactivitycontemplated.Theproceduresout- linedtooperatethereceiveridentifyeachoperating controlandswitchbyitsfrontpane1desination(See figure1-2.). 2-3.MCWRECEPTION-VOICE,MUSIC,orTELE- GRAPH.