TS-850S_review_CQ_1991.pdf

《TS-850S_review_CQ_1991.pdf》由会员分享，可在线阅读，更多相关《TS-850S_review_CQ_1991.pdf（8页珍藏版）》请在收音机爱好者资料库上搜索。

1、CQREVIEWS: The KenwoodT58505 HF Transceiver BY JOHN J. SCHULTZ, W4FA Kenwoods Ts-B5OSHFtransceiver. hen I first looked at the T5-8508, I had the impression that Kenwood took a T$-940$ andT 255 ft lorUPto9bands. Yes. one antenna w,th only one coaleedlloecan handle an9HF bands.te.160- 80-40-30-20-17-1

2、5-12-10M. That sright.ItyouInstallourGaran, WIndom Antennasploperly. youHlllnneeda luner.Our customersandindependenttesershave contormlldttnstactThe secret is in our special balun,Itmatches thercw-nn cecence coaxcable tomeh,gh-impedance Windom-type antenna.OJr Garant WindomAntennasare available with

3、 either a 50QW PEP or a 2KW PEP balun, WARNING Dontbetooledbyantennas that arealsosold w,th a wIndomlabel. Most 01themusea 1:4 tlalunThaibalunW I.neverworl.youll always need a tyne! wrth lhose lake WlndomS The laws ofpt1ysiCSmake sure thaIrtdoesnt work, despite what the manulacturer promises you, Ho

4、nestly, whybuyanantennathatneedsa tunerto operate? 1 ANTENNA - 9 HF BANDS - NO TUNER Wflle, phone ortafor our complete data report on all ourGarant Windom Antennas, Itccntajns moretecnmcetdata,actual SWRcurves. customercommentsandourlowmailOlder c-ces.We ship worldwl:!llAll our genuine Garant Windom

5、 Antennas aresoldwrth a 10-day money eaecguaranteeThey come alsoWith a 3Year LJmlledWarranty. ALLBANDRADIO PRODUCTS 3378-CB6DouglfS$1. Vlclorla.B.C.,ClnldlV8l3L3 Pbon,Hollin,: 1-6(14-361-1224 FilHOlfln, : 1604-383-5454 Less than 0.25pV More than:t1.2kHz 6dB:12kHz,-6(klB:24lHz Lesslhan0.2pV Morelhan

6、40dB More thanSOdB Less than 4pV Less than 0.2p V MorethanSOdS Less than 0,25pV Morethan40dB -6dB:6kHz,-60d8:15lAM Output load impedance R1Tvariableraroge Output Imageratio NOtChliIler ettenuation latlFrejection and Compression.Separate bargraph displays remain dedicated to an S-meter scale on recei

7、ve and apower output scaleontransmit. Itsalmost the sameas theexcellent bargraph meter display used on the T$-95O$. The two filter switches allow independent selectionofany ot the a,a3 MHz and 455 kHz filters in any mode (except FM where only 6 and 12 kHz bandwidths for the 455 kHz IF can be chosen)

8、. The filler selection last used is memorized for the mode used and also the VFO used for the lastbandused. The tnters used are displayed in a field above the switches. There is, however, no sep- arate displaylortheoouooau.e kHzsse filter if it is installed. Since it fits into one of the slots reser

9、ved for the optional 500 Unwanledsidebandsuooression(wittl1.5kHz -I ; Maximumfrequency deviation (FM s FreQ uencyresponse (MBI ; 10Hz step - XITv.iablerange 20Hzstep MocrophOlteimpedance Circuitry Frequencyrange Inlermttdiate htlQueocy 100kHz- 500kHz sse.cw. K 5OClkHz-1.62MHz (at IOdSS 1.62MHz- 24,5

10、MHz +N! N) 24.5MHl-3OMHZ ., 100kHz- 500kHz AM 500kHz-t.62MHz (et1OdBS +N/N) 1.62MHz-24.5MHz 24.5MHz-30MHz , I2dBSl-Dl 28MHz-30MHz l 0 SSB,CW,f SK Selectivity AM FM Say You SawIIInca CIRCLEONREAOERSERVICECARD OfF OfF OfF ON OfF OfF 6seconds 8seconds Olaplay lor theSOMHz converter :ON/OFF Displaytatth

11、e430 co.artef:ON/Off 28 Progr.oetlarll SelecttheManualweighl (When-uloweightfunctionill OfF Change!heREC 3recording lime1016or32seconds. (WhenoptionalDRU2is iostailOOl 32T,aMle,lunctionwhentwoT$- 650.e coonected :ON/OFF Change!heREC2recording 30time10 6or16 MCXlilds.(When aetionalORlJ.2 iantalled) C

12、hanga!heREC1lecordlng 29time to 6 or 16 saeonds. (When opiionaiDRU2la inslalled) Bugkey; ON(UMdl/OFf(Not -(WhentheELECTRONC KEY swiIch.ON.) WhenspillisMlecIed.the 25lemporary display01thelransm frequencycanbe1lATlftdonen . ON OfF OFF 8M 110 Hz 2125 Hz 127kHz RIT/XlTYariabIerange: 127kHz/2.54kHz Sub

13、tones : b(Tonebustl/c(ConlinllOlis ro., FSKtrllfllmUionkey8hatI: OA(SP-CE)/ON(MARIQ Programacanhold:ON/Off Stamgthebandlrequency beloretheUP/DOWNswiIchis pressed : Required(ON)/Not required(Off) Yaucan switchbetwaenFSK maderecelVflloneshighl2125 Hz)and1ow(l275HZ n Theshillrange01theFSKmode 12canbelI

14、lll: 10170,200.425,or 850HzbyusingtheUP/DOWN .-. Delermlnewhlllha10change the lrequency with lheluolog 16kllOb (ONIor1101(OFF)when thestandardrnemooychannelis recalled10AXVFO. -u1amahelollyinc,emenlS!he 10.-noryChanneldata limeeaCh limeYOI.Ieeter afrequeoeyinlO m, . No,Progr.tlleluueticul ON ON ON 1

15、00Hz 10kHz Initial stateProg.rammable tunctiona Aldib(lalann: QNlMorsacode)/OFFlBeep tones) M.CHNFOCHcont,oI step trllQuerICY.: 10kHz/SkHz/lkHz M.CH/VFOOicorrIrOlstep frequencyse: tokHzJ9 kHz(AMmodeonly! TUNINGkoobsteptrequeney Mlectioo:100HZ/ l0 Hz (AM andIMmodeonly)lEceptthe FINEfunctioniaON.) 03

16、00 No. cAthefunctionll01thislnIllE8i_canbe c:lBt9odalthelimethe.turnedON. R8pe81toeacttfunction. 1.Preandholdtheiss/usekey wnl(lYOI.Ilum on tilePOWER swilCh. 2. AnumbwHiappea In th display. 3.Seleelttldesirednumberbyrot.tinotheM,CHI VFO CHcontrol. .t.lvncionbypreseingtheUP/OOWN . 5. F-Ction 1811ctio

17、l,canbeII.omedof!byIIIIIll!he Clflkey.orbyprening!hePOWER.,;teIl OFFand _ON 00 UP/DOWNswitch etec fr9QUenCYIelaction: lOOOkHz/500kHz/IkHz (WhenIMHzkeyi5ON.) 1 0 Hzdisplay eaotulion: ON/OFF sseAUTOmodeshift:ON/OFF Materpealhold:ON/OFF 0 0 tannaTunar : ONCAUTOIIOFf(MANu-ll (WI-.!heSW1swiIchia!NT.) -uf

18、Owe9htfunction :ON/OFF (WhentheELECTRONIC KEY swilcliisON.) Reve,sa moda:ON/OfF (WhenAutoweighlluncliollis ON. ON ON OfF Tnonandott(kaCIwntlnO 33irltoVFObyIhetr.-.ateffin:! wtoerltwoT5-850are CQiwoec:ted. TheIFandAIclCtJitsofthis I,aoacaive,canbeswitchedott 34(mutamodalsotheuanscaiVfll willnottransm

19、itlIlIenIIthe standbyI,minalillgrounded. OfF Tableff-Optionalfunctionselectionsforthe T5-850$. P.l0P.llP.12 P.15 . iRr . . . ., _. -.,.:!:, 0 0 .w Eac:;D . . .- P.14 . . -.- . . .- .-. - .,.,.,. 88B .B.B .8.B.B.B.-888. -/ . P.13 , .K.:. -.- t. K_ .IIi : ; : ; l , ! P.12 . . = . n ._- = .- = . ._. DO

20、DD A_A .A . :. 0: Fig.1-Front-panel-ccntrollayout.P numbersreferto instruction- bookpages,butare used inthetext for referencepurposes. 28COJune1991 Say You SawItIn CQ with the pretty much routine functionsof getting frequencies into a memory chan- nel. or VFO, transferring data from mem- ory10a VFO.

21、 and initiating a scan mode. Severalscan modes are possible: mem- ory channel scan (with lockoutofunde- sired channels), group scan (memory channels00to09, 10 to 19,etc.), and pro- grammable band scan (memory chan- nels 90 to 99 only). Eachofthe last ten memorychannels can be programmed with individ

22、ual high and low frequency scan limits. You can scan from 30.0 kHz t030.0MHz,ifdesired,and the mode and filter canbechanged during scan. The scan speed is front-panel adjustablefrom about 20 to 700 Hz/seccno. Taking a look at tne field marked P14, the buttonmarkedQUICKMEMOimme- diately catches your

23、attention. Actually. there are five stacked quick-memory channels. Each one storeseverything- receive/transmit frequencies, modes,rn- ters. AlP on/off, fine-tune orvott.meier selection, etc. etc. The memories are stacked in the sense that every time the M.INkey is depressed for a given trans- ceiver

24、 setup, the last entry goes into memory channel1,lhedata that was in 1 moves to 2,etc. and the data in 5 is losl. To recall a quickmemory,MRis de- pressed and the M. CHIVRO. CH control rotatedto thedesired channel number on the display. I suppose if you are fast enough and the nets are slow-going,it

25、 would be possibletoparticipate inalmost fivenetssimultaneously. Ofcourse, thatsan exaggeration, but the quick memo function is the quickestwayto switchamong preselected operating tre- Taking ottthe top cover completely you can see the power amplifierlfan assemblyin themiddle and the automaticanten-

26、 na tuner to the front right.The fan is exceptionally quiet. 9 key is also associatedwithareverse function forchanging the sideband used for both reception and transmission on CWand FSK.Thenumeric 0 keylsassoci- ated with a very neat pitch function. By using this key in conjunction with the M.CHNFO.

27、 CH control any CW pitch from4QOto1000Hzcanbe selected in 50 Hz steps. The frequency display field ots- plays thepitchfrequency. The sioetone frequencytracksalong. The rest of the keys are associated modified).The segmentscanbeused in- dividually orcombinedfor maximum length. The number 7 key also h

28、as a tunefunction. In the SSB mode it re- duces the poweroutput by roughly half to facilitate tuning a linear amplifier. In the CW mode it is usedtozero beat a re- ceived signal.The numeric 8 key atsoac- tivates a fine-tune function. The normal tuning rate (10 kHz per tuning knob revo- lution forSSB

29、ICW/FSK and 50 kHz for AM/FM) is changedto1kHz.The numeric Here is the T$-85O$ wedged in the front seatofthe authorscarin a quasi-mobile in- stallation. It does illustrate thepoint that the intermediate sizeofthe transceiver makesitquite suitablelorbase-stationorportab/e/mobile use. A latch cover on

30、 the topofthe transceiver allows the insertion ofthe DRU2digital recorderoption. SayYou SawItInCO June1991_CO_29 HereisanicesurpriselookingatthebottomoftheTS-85OS.A separatecover,held in placebytwoscrews,canberemovedif youwant to pluginanyofthe optionalIFfilters. Spacefortwo filtersisto the left,and

31、space for anotherisat the farright. Takingoffthebottomcovercomptetetv,youcanseetwoofthe largePCboards fortheRFandIFsections.Itisquiteeasytoac- cess almost allofthecttcuntyin theTS-85OS. quencies.The only delay when switching between channels isdue to the secondor two It takes the automatic antenna t

32、uner, if installed. to reset. Eachrecalled chan- nel is immediatelytunable, since the memodatais transferred to a VFO auto- matically astheM.CHNFO. CHcontrol Is rotated. The rest of the controls are straightfor- ward.The VFO system is the convention- al VFO A/B one. Either VFOcanbe used as the recei

33、ve ortransmit VFO,and either canbe set to any frequency within the range of the T5-8505. Datacanbetrans- ferred from either VFOtoa conventional memory channel. Data hastobetrans- ferred fromamemorychanneltoa VFO to makethatmemorychannel tunable. That is,thats the way the radio operates when you rece

34、ive it! If procedure No. 16 in Table II is executed,surpriseofsur- prises,all thememorychannelsbecome tunable exceptforsome channels in the 90-99groupwhich have dual frequency data stored in them. If a recalled memory channel is within an amateurbard.itcan beused immediately for transmit pur- poses.

35、 Why in the world Kenwood didnt immediately make apparent that the ra- dio hasSO-plus tunable memories sort of mystifies me. TheDOWNand UPswitches function as a bandswitch and toggle through the various amateur bands unless the 1MHz switchisalso used. In that case, the fre- quencyincrements in 1 MHz

36、 steps. THe transceiverdoesreturntothe last fre- quency setupused on a given band even 30CQJune1991 though VFOAor Bmight be retuned when switching to another band. FieldPllshows the frequency/meterl annunciator displays.The display looks a bit crowded, but in fact,itisoutteclear, sinceonly afewdispl

37、aysare active atone time and multiple colors are used. Test Results Idid some benchcheckson the TS-850S, but not really extensive ones,since much ofthecircuitryin the T5-8SOScomes fromother Kenwood transceivers and I didnt expectanysurprises.There werent any, as confirmed by later operating experien

38、ces. The mundane specifications such as those forpower output, spurious re- sponses, etc., were all easily met. The front end is not noise limited, and the dy- namic range slightly exceeds 112dBus- ing the unity gainAF preamplifier (AlP on)! Itsa good, stiff front end with strong signal-handling cap

39、abilities such that the weak onescanbepulled out easilyevenin acrowded band.The auto- maticantenna tuner isonlyrated to han- dle SWAs of up to 2.5:1, but I found it could easily handle SWRsofup to 5:1if the reactivepartofthe load is nottoo great (e.g., dontuse it with an end-fed wirewhich isVzwavele

40、ngth long on a given band).The automatic-tuning power level isset at 10 watts.so it is unlikelythat any harmwouldbedonetothe tunereven if you tried to testmatchan unknown load. On-The-Ai, Results Most amateurs arentreally too con- cerned abouta transceivers specifica- tions. They just want to getont

41、he air. Well, I think first understanding a bit about the makeup of a radio makes it all that morefun when you get it on the air. However, be that as it may, the T5-850S is a fun rig to operate. Since it uses the conventionalVFOAlBsystem, there is no confusion factor there.To usethe keypad forfreque

42、ncyentry to either selected VFO, presstheENTkey followed by the frequencynumbers, followed again by theENT. No confusion there. To get that frequency into memory, press M.IN, choose amemorychannel, and then press M,INagain. Again, no confusion, and on it goes. I found the frequency se- lection/memor

43、y system in the T5-8505 extremely straightforward to use. All the rest of the controls are clear and easyto use. I think CW buffs will find the fine- tuning rateof1kHz pertuning knob revo- lution combined with a sharp CW filter a joy to use. SSB received audio is crisp and clear using the internal s

44、peaker. The receive tonecontrol is of marginal use. When lis- tening to noise you can hear the effect of the control, butits far less dramatic when listeningtoastation,since so many stations on SSB tendtohave a bit of shaped audio. The Slope Tune feature in conjunction with the notch filter pro- vid

45、es excellentresults against QRM. sayYouSawItIn CO is the only word to describe this: JPS Communications, Inc. 5516 Old Wake Forest Road P.O.Box 97757 Raleigh,NC27609 CIRCLEseON READERSERVtCE CARD June1991CO31 AMustjorDXers, Contesters,and Field Day Ops. Order direct: NIR-IO:$395; with 12V AC Adapter

46、add $12. Wepayshipping. Orders1-800-533-3819 Tech1-919-790-1048 FAX1-919-790-1456 Reduces Listener Fatigue. TheNIR-IO isa Noise/QRMReducer for SSB VOICE!Itis the only deviceavail- able that can reduce noiseandremove heterodynes occuring in the presenceof speech. Whatmakes thispossible?Real- Time Dig

47、ital Signal Processing(DSP) using a40MHzDSPchip! The NIR-JO is aDSPaudio processor thatconnectstothe audio outputoj yourreceiverortransceiverand includes a buill-in Speaker AmpliFier. -AutomaticallyEnhancesVoice Reception by ReducingorElimi1Ul!ing: Heterodynes,;,. - $135 - .- ._- FLUKE MULnMmRS AIMe

48、d. AVollo - - We-,_ - - ,_.e._ -.- f.-hlldlellFrsqlfllCyCeunttrt .1,. 111 ,.1. m. Elenco3SMHl: Dual Trace $495 .- ._.con ._ - -,- ._ - -1-._.,. - - _.1-,_ _.- -. ,._T_ _0-_, o.SIll:O HitACHICOMACTSERinscopu_CRt _e:-.-*(V.,-._ _co.(V-_T._0.0.,.0 _._._.-CRt_,_ ._._.- - v_.OoIT_.W v_-._1.- v-_.a v,_,-OT._,_ v,_,-.OT.,_ :;=:= - $6,95 tlI0.-11 .,.Warf., CALLFOR PRICING STANDARD C228A1441220MHz TrueTwinSandHandheld FirstTWIN BANDHTMADE ForU.S.M8r1:.8t - sus - - -.- D1gllllT,.SIPx,.,. . IIW011,. IIW.A w_u - .-._- .117. SCm .1-.1.lOll$lU . 1