AN-GRR-5_review_1983.pdf

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1、l Theresstillsomevery interesting surplusoutthere, interesting in termsofpriceandwhatyou candowith the gear. WDBDASpointsoutabargain shortwave receIver. uooA/qja4a4aWa4 OOa4AWa4Aqj BY STEVEN JOHNSTON, WD8DAS MANUAL-PRESET ruNINGKNOB CAMARM CMANGEOVII T eeTO60Us.IS A 6VI2VOFF lI24V e:.: POWER SELECTO

2、RPOWER ontenpresetIrequencies.Thefrequency range isdividedinto fourbands: 1.5to2.7 MHz, 2.7to5MHz,Sto9.5MHz,and9.5 to18MHz. Ifyouveneverhadtheoooor- tunitytotunethedialoutside01theama- teurbands,youremissingsomeofthe mostexcitingactionthereis.AsIwrite FINE TlJIINGKN08 NUMBERED DETDtTS OP,.0100 o,;g.

3、FUSS.ViiiiI UOIIIA.24f.3A.12l4A.6V.BA. Fig.1-Front-view drawingsofthe AN!GRR5receiver combination. lOCl(lNG1(1ASSEMBLY OfTEHT- FREQUENCY handonthegainwillmakeuptcrthelack ofautomaticgaincontrol.andtheextra sensitivityoftenwillmakethedifference whentryingtocopyRadiolowerSlom- boviaoramilitarytranspor

4、toverthePa- cificOcean. TheANIGRR-5tunescontinuouslyor-823IrvingtonNE,Massillon, OH 44646 Many amateurs would really like to have acompact, sensitive. stable. ganer- al-coveraqe receiver in their shack but relativelyfewarewilling 10paytheprice forthedigital dreams offered today. An alternative is to

5、 scour the hamfests and auctionsinsearchofanolderreceiverof the National,Hammarlund,orHalucratt- ers variety and risk straining your back carrying it to thecarlIn addition, these battleships rarely survivethelestoftime (or misguidedalignmenttools)andusual- ly requireworktobeputintoservice. Inmycase,

6、mypockethas neverbeen tull enough to afford any of the new re- ceivers, but my shack has provided a berthforquiteanumberofthe oldbattle- ships. In spite of the blood, sweat, and tearsshedovertheoldcommercialrigs, theytrulycantcomparetotheonereo ceiver1enjoythemost:theU.S.ArmySig nal Corps Radio Rece

7、iving Set ANIGRR-5. The ANfGRR-5 is amobileradio receiv- erthatwasused fortacticalcommunica- tions bytheU.S.ArmyandAir Force In the1950sand60s.Itcoversthefrequen- cyrangefrom1.5to18MHzandIs capableofcopying a.m., s.s.b.,andc.w. signals.Thefrontviewofthereceiveris shownin fig. 1. TheANIGRR-5 isactual

8、lycomposedof twomainassemblies:theRT-1741URR receiverandthePP-3081URRpowersup- ply.Thesearefittedintoa water-tight cabinet(which,ofcourse,has itsown designation: CY-615/URR)andlntercon- necteobymeansofacableinthecase. WhileI personally have nevertriedit, leg- end says thatthisset willfloatquitewelli

9、f accidentallydropped into a lakeor stream.TherearentmanyHalllcratters orNationalsthatcanmakethatclaimI Sincethisreceiverwasmadetooper- atewithawhipal1ixedtothe topofthe case,oratbesta pull-out reelantenna, sensitivitywasamustinthedesignofthis set, and sensitive itislThe r.t.gaincon- trol isperhapst

10、hemostimportantcontrol onthereceiverinthiworldofhigh-power transmittersandgoodpropagation. A 104COM.rch1983Say You SawItInCO 9Ov.d.c. B+ supply rotected radios. Ihopeyour family can stand i1lOOI Ground _ Pf-30B POWER INPUTJACK ON FRONTPANEl COMMDSOFT 665MaybellAve., Palo Alto, CA 94306 (415)493-2184

11、 PhotoCaster. A feature packed system totake, store, transmit and receivecolor and black- and-white photoswith your Apple II computer. PC100(Disksoftware,110board, manual,demotape)$499.95 PC-101(AboveplusPanasontc TVcamera, RGB filler accessory)S749.95 15-daymoneybacktrial onfactoryOfders. Writeorca

12、llfewdetails. Visa and MC orders accepted. AddS5 (PC100)or$10(PC-l0l)lor shipping and handling_CA res. add applicable sales tax. DealerifIQuirieswelcome, AppleIt1M Apple Compule:t,lnc. IhQ1OCastr1MCOMMSvF1.Inc. be any of the following: 115 voltsa.c., 6 volts d.c., 12 volts d.c., 24voltsd.c., or dry

13、cell batteries(90and 1.5 voltsc.c). Seefig. 2forinput connections.The PP-308makes the setquiteversatile and fun, especiallyifyou haul the receiver in- tothewilds and operate withthereceiver atop a pile of dirt and power supplied by batteries.Atour last Field Day site the Sunday morning c.w.crewwas a

14、waken- edby the beautiful strains of Waltzing Matilda on RadioAustralia(thanks to the GAR-5 and convenient pile of dirt)1 All this considered, the GAR-5 still would notbesuch an amazing receiver If itwerenot for onefactor: theprice. The AN/GRR-5 is usually priced In the$20.00 range at hamfests, and

15、quite a few are floating around. The Fair Radio Sales Company (P.O.Box1105,Uma,OH 45802) at one time offered the AN/GRR-5 receiver/power-supply combinationfor $49.50, but the 1982 catalog listed the CIRCLE 31ONREADER SEFlVICCARD CIRCLE25ONREADER SERVICE CARD Beneher1:1BALUN , Apple II Slow- ScanTV l

16、 etsyouramenoaradiale,notyourcoax Helps fightTVI- noferritecoretosaturate or re-radiate DCgrounded-helps protect against lightning Heavy brass contact posts; non-rusting materials throughout Maybeused withantenna tuners; rated5KWpeak Handlessubstantial mismatch atlegallimil Built-in center insulator

17、; Amphenolcoaxconnector RuggedUVresrstentcustom Cycolac8case,notplastic plumbingparts ZA-1A$17.95ZA-2A$21.95.bIlIlIOm)OU 35-JOmtU30mH.z,*h.,o_elor2DoomrJe*InUSA.dd _SO00nd11 BenCHe R 1 inco333w.La;1;2:=IL60600 this,Immonitoring McDill Air Force Base on11.246 MHz, and a littlelaterIll tune doNn and l

18、isten to the Princess lines(ofloveBoatfame) forsome quiteamazing phone patches. Someof the other features of the GRR-5 are a 200 kHz calibrator, a wide choice of power-supply operating volt- ages, and practically drift-free opera- tion-amazingfora tube receiver. In less than a minute the receiver is

19、 on frequen- cytostay.Icantune-in a single sideband station, set theb.to.for nice audio, and listenforan hour without retuning. The 1.5 volt filaments in the tubes generate onlya small amount of heat,and the seal- edcabinet tends to keep the internal components at a constant lemperature. ThePP-308/URR power supply is quite interesting as well. II was designed to supply the90volts and 1.5 volts10oper- ate the RT-174/URR and to houseIhe loudspeaker. Power input to thesetcan s.yyO!s.wIIIn CO