ICOM

Loom has introduced the IC-2SRA 144 MHz and IC-4SRA 440 MHz hand-held transceivers, with a wideband receiver installed directly into the unit. These compact HTs (13,6 ounces 2,1 x 5.3rJ x 1.4) will receive everything from 25 to 905 MHz. If you connect an external 13,5 volt power supply, these handhelds will provide a full 5 watts of output power- Independent squelch and volume controls allow you to change settings in each band separately. (corn's frequency monitoring system lets you monitor...

Info

Figure 2, If you don 7 use an etched PC hoard you can make your own mounting pads and solder them to blank PC board material as shown. The scrutinizing constructor will notice that a 4 1 balun transformer is used on the collector of Ql. At some power output this impedance transformation ratio w ill perfectly match the 50 ohm input of the lou-pass filter and the antenna. The collector impedance of this ty pe of circuit is found b the following formula Z Vcc2 2*PO, where L is the impedance. Vcc...

Circle On Reader Service Card

THiS MONTH'S GOODir F HO M HE CANDY STORF Sirt sr& > v.n,jr.i> n-ii rTALnJ fciimi v 1 riy ' Jli . f ' I Over Kfln Hems ri Sifxj* Pn ps CasHyft 6 Pm. I Mrcr SpifliK In MAM AOS l whin er Son wj luff 11- ' ROSS DISTRIBUTES COMPANY 7S a SlEUt SUCP1, Preilnr Id. B3S63 TeLcp onr (yilf ) 8.SJ-QA30 Hours Tu& .-Fri. 9-5 -2 Mprd VS- Closed_SM. S Sun

AR

Extremely compact size Continuous coverage Attenuation Programmable by Channel, Manual tuning knob. Tuning increments down to 50Hz. AM, FM, wide band FM, LSB, USB, CW modes. 4 Scan and Search Banks, Lockout in Search. 4 Priority Channels. RS232 control through DB25 connector. 15 band pass filters, GaAsFET RF amp. AC adaptor charger. DC power cord. Telescopic Antenna. External Speaker, Mobile Mount Extended Warranty, 2 3 vrs. Mobile Mounting Bracket. RS232 Control Package EP200 2.00 MSI 19,50...

Rack And Chassis Boxes

U2 ISD1016 (or ISD1020or JSD1012) Q1 2N3906 PNP for 2N44D3or 2N2907) D3 1N40 1 (or similar) diode Resistors C10 1.0 wF non-polarized fRStf 272-996) Mike Eiectret Microphone (PC-mount RSf 270-090) SI ,S2 Momenta ry-coniact push-button (RSrf 275-1571) S3 DFDT ioggle switch (RS 275-626) S4,S5 SFST toggle swilch (RS1275-624) PC board (See below) Speaker 2 speaker Box Radio Shack project box battery battery clip or holder An etched and drilled prirttec circuit board is available for 4.60 + Si .50...

Fantastic M Fm Transceiver

Ramsey brt- kh the price barrier on2 meter ny Here's the ideai rig lor huld days, hamlestij vacations, second cars and packul (it even has dedicated packul connections) Sm expandable diode-progrimrnod channels. 5W RF output, san& nive dual conwersiori JHd EASY 3S mt)l> Why pay more lor Bpacondhmd ok)ng wnen you can make fOtir own for iasa Have aome tun win ytKr ow rrji AMERICAN MADE FM rjg' This ktt comes com pMe e cec > or tne case m*e and eak - COM or equaf spe& er-n es plug r -jm...

W Catalog

Look For December's Special Of The Month your signal is distorted, you II have to itdjusl R11 to reducc the audio signal to the proper level. This is typically about 20 millivolts or so, You can use the voice ID for a repeater identifier. Just hook a lo ic signal from a repeater controller or a timer circuit in place of switches SI and S2. Whenever the incoming logic signal goes low, one of the messages will be played. This would also make an excellent hidden transmitter identifier for...

CXA

Moo 325.95 424.5 a 444.51) 624.50 654.50 96.00 155.50 355.55 142.95 159.95 MATCHED it SELECTED TUBE & TRANSISTOR FINALS IN STOCK Tube Socket Caps avaH. Eimac Penta t yr.Jim Prices availibilily subjeel to change without noiicc. Foreign Small Packet Air 10 oz, postal 5.50 UPS Shfp HancT. 1 tb. Conl. U.S. VISA MC or prepaid S3.50 C O D. ORDERS add 3.75 QUANT1TV PRICFNG AVAILABLE NEXT DAY UPS DELIVERY AVAILAB E MINIMUM ORDER 20 ORDERS RECEIVED BY 1 30 PST ARE SHIPPED UPS SAME DAY 'EXPORT ....

Ameritron Authorized Dealer

jVrirlf ritu'e LARGEST STOCKING HAM 0EALER new TgrR l liy COMPLETE REPAIR LA8 ON PREMISES Saturday i. Surtday to A M lo 5 P M (Free Parmrvgj iRT LEX- SfKing St Station Subways 8MT- Prince St Station IND-F Tratn-Bwy Station Bus Broadway to Spring Si. Path-9th StJKh Ave. Station COMMERCIAL RADIOS STOCKEDl ICOM, Motoro Ja, MAXON, Standard. Vaesu We serve muntef-paihties busiftesses Cj I Detenss ele Portables mobiles bases, te Dealers

Lc

SAAT Lyrlhwood. WA 98036-0918 Technical S jpport'(206li775-7373 Office (206)774-5554 2061234-5678 CompuServe.user IB 76702,10K3 * > . * * All sfieciflcation subject io change without nottce or obligation. * AEA, Inc. 1991, AH Rights Reserve m For those repeaters without PL, pin 17 on the audio can be left disconnected and the repeater will function normally. To install PI, on the repeater, connect an open collector output from a PL deck to the PL DECK IN pin of...

Rep

A premium repeater wilh aulopatch and many versatile dtmf control features at ess then many charge for a bare-bones repeater We don't skimp on rf modules, either Check the features on R144 Receiver, for instance GaAs FET front-enc helical resonators, sharp crystal fitters, hysteresis squelch. - Available for Hie 2M. 220MHz, 440MH , 902MH l Lands FCC type accepted (vhf and uhf commercial bands). * Rugged exciter and PA. designed lor continuous duty. * Power output 15-TBW (25W option) on 2M or...

Toll Free

THEY'LL THINK THEY'RE JUST HAVING FUN Emerpt Packs contain QRY All kinfc-prt of wx ciEcd muln-KinJ DipokA-Slofxr ADitnn.i. .'O ooix r'ccJtiftc. Quick Launch m, rotpn> cu dacrcfi upp n braid. 10 p Tech MmuaL. Complete. Rcadj for Acnon. One person iniialLs in 15 minuter Inf'.-fact Si

M

MODEL CS-800 A low cost patch that operates either Full or Semi Duplex. Plus has built-in Repeater Maker. Use with dual bander radios or connect to your existing repeater for Full Duplex patch. Also turns your radio into a powerful repeater system if desired Other features include 9 Phone Number Speed-Dialer and more. MODEL 8200 includes all features and modes of Model CS-800 plus 90 Phone number Speed-Dialer, Remote Base Mode, DTMF Selective Calling (other tones are optionally available),...

Every Issue

The entire run of 73 from October, 1960 through fast year is available. You can have access to the treasures of 73 without several hundred pounds of bulky back issues. Our 24* fiche have 98 pages each and will fit in a card file on your desk. We offer a battery operated hand held viewer for 75, and a desk model for 220, Libraries have these readers. The collection of over 600 microfiche, is available as an entire set, Cno partial sets) for 250 plus 5 for shipping (USA). Annual updates available...

Wfmi

These balufls and ununs iunbaianced-to un balanced transiormers), exclusively cJesigned by Or. Jerry Sevrck, W2FM ir reproved stons of those described in his book Transmission Ljne Transforme 2nd ed iNewington ARRL -jyO- Tnerefare many new Iransfo*m ers are readily made available Some exampies are Dm unsandununs transio rr tionrat-aso' 1 5 1 21 ei and 12 1 Many rflutiimatch unu.ns are also included For a fr e catalog and a list ol 48 des< gns contact AMIDON ASSOCIATES INC. TEL 213-763-5770...

Baluns

B l3K4lLf-fcnl.5KKM W tit T1-W C Mi * Otfufl 1 * Ofmnwi to CMC Ctfrim-IWun Ul.tS Frw SO page Discount Calico. Everything fee wlrt antennas, connectors, co . Allow 4 - 6 weeks lor Bulk mail delivery of Catalog ot send 52 for catalog by Priority MahL Mention ad tor these prices. Prices are subject to change. ADD SHIPPING - Ceil for COD. Visa A MC welcome. Give card J, p. dale, signature. VA residents add 4.9H Seles lax. See ad in amrt CQ> 0 f a PMOyifli s (wrrto...

Broadband Pr Lamp

Qoosi rnosa weak sigr.ais to your 'icarrner TV, iiwrtwaye r 0ia or ire ilwency coun Ei Flat 25 dB gflln. 1 to 1000MHz adl rjF NC conritHciors Huns on i2 VDC or 110 VAC powergarn I .V n.JJWesut. -IffW OU . & W V lor 40W oul Sjm .-j'Tip rtH turvO m many ruim irieg-azine articio . Compile wirh jJI parts le- f CJtse and T-P P A t. 40W pwr amp kit 95 TR-t, RF sensed T -R relay ku 95

Sg

Ntw lufr coBl miciowave Dopplei 'adfl' ktl clocks Cais planes, boati. ruy jj*. b-kes Of iny ia moving t> -pect Oj- fatK at 2 6 GHz up lo 1 J f lle -artge _ j J-qlaJ n c l diipHyi ipaad m mit par hour, lulo- E jrpr tona - zu& j* a v* i 'or httung to aciuai doppfer sht+i usei t o i-t coi i .i - - . t f jntennj (nor rncfudeat ar d rtjiis on 12 VDC Easy ra Dui'd -jii nu. lowjve circ Mlry is PC sEnplnit-km trtokjde deJpwory A 5 plasliccase with apoQdygr ptUca lor i proAss gr- I 'i ioY A very...

Musjc Machine

Ned dMi) jnda altar- m damui and p r kuw pr- 3 wtJI- 7 LA Mt qritoo Hfc Of im e i-v -T-VKOqjib Sum an Jm cufsri & in v tarrw E tefl fti sp a** .-Jiums ne td 3tji M lempo ane iim-n Aj our jj'jL fiat tor a tund rT> i Nnisn nlt act 1 > i ted *-tCfl N > 1 provides teheo current capability up to too mA. Can dnvs relays, lights LEO or von a Lape recorder molor Runj on 9 VDC TisnSmtS AjO-g ilraieo twiTt up to 30 usa S4mpie lens- to 55 up to - rrute1 Hum tree, asei DOiirtz farrier Graai ror...

MFJ

New MFJ DC Power Outlet saves you space and money. Hook it to your 12 VDC power supply and get 6 OC outlets for connecting your accessories. RF bypassing keeps RF out of power supply from DC line outlet. 13Vzx2 4x2V2 in. Box 494, Miss. State, MS 39762 1(601) 32 5669, FAX (501) 323-6551 Ht X 53 4590 MFJ STKV One year unconditional guarantee * 30 day money back guarantee (less s h) on orders from MFJ * Add 6 00 each s h * FREE catalog MFJ . . . making quality affordable Throw your voice with this...

All Sales Final

Amentrort Antenna Specialists Astatic Astron, B& K. B& W, Bencher. Brrd. Butternut. CDE. CES. Cushcraft. Daiwa Eirnac Henry, Heil Husile Hy-Garn. Icom. KLM Kaniromcs. Larsen MFJ J.W, Mil er. Mirage, Nye. Palo mar RF Products, Saxton. Shure. Tempe Ten-Tec, TUBES. Yaesu, Vitiroplex, Duplexas, Repeaters. Scanners. Radio Publications. Uniden. Kenwood, Maxon. HFC. we now stock commercial communications systems HAM DEALER INQUIRES INVITED PHONE IN YOUR ORDER & BE...

Model G

All amplifiers Incn-rpir) are imear. aihenode with iufly automatic T R swilchiwj and PIT capability The ttum prcamps use GaAsFET devices rated aL5 dB NF with + tfi dBm 3rd order IP, IPA, Standard and HPA amps arc intermittent duty design suitable for base and mobile operation, tiepsater amps are continuous duty, class C Amplifier capabilities High-power narrow or wideband 10Q-ZQ0 mi Z25-4Q0 Ml 1-2 GHi Military (2SV) CornmerciaL el - consult factory. A compEate line ol fix preamps also...

Creative Control Products

31B5 Buttling Avfcnue Grand Juncllon. CO > 1504 3031 434-MOS PC Super Keyer Makes Your ISM Compatible a Full-Featured Memory Keyer AND Code Tutor for Only 24.95 Practice Receiving AND Sending CW Sends Random Groups and US Callsigns for Receive Practice. Connect Your Paddles and Use the On-Screen Display to Practice Sending Keyer Features Include Uniimited Length Messages, Paddle or Keyboard Inpul, Msg in Msg. Beacon, Auto Serial Number, Text Rle Send, LocalAJTC Clocks, Morel With Interface...

Other Radios And Accessories

XC365-AUrrj' r Ijklra Clear Plui Cordless Phone SB9 35 C T7 65 S- A Un iGen sue a he rp r one cordk> s i phone. S 09 0CS5XLT-A 10 Cfiannel scsnrner ji -.a S AD 10O-A Piufl m all charge for BC55XLT S14 95 PSOOI-A Cw ghier ca& ie lot BC5S il T Si 95 VCOOWA Ca > ir. for BC55XLT Si J BC70XLT-A 20 channel MJf*ne Si59 BCM2XL-A Bearcat *D c 10 band 5 anner SB-i 95 BC14TXLT A Bearcat 16 cn 10 band scanner . S9-95 72XL-A 9e rc i 20 Cf< l fcrtii KJtWir Si34 95 BC1 77XLT-A Bearcat i6ch band...

Voice Messages

Create your own contest annuncia-tor DXer voice messages. Now all the elements of voice storage and playback reside on a single chip, Simply connect the chip output to your transceiver's microphone input and you are ready to go. Record a transmission on your analog voice storage (AVS) unit,11 With a flip of a switch, record and playback rare DX and other contacts. Replay transmissions that are QRM'ed until the message is understood, Hook up a microphone to the chip and record your own voice...

1

500 000 MAMS plus I.WtOlPwWit Amaitirr FUftrii Proflrarrii and Qjta 500 000 MAMS plus I.WtOlPwWit Amaitirr FUftrii Proflrarrii and Qjta Iuckm T fu Publishing r*l. J, Boh 56 - Mineral, Virginia 3117 703 894-5777 - Bod 5 - i SJfl Iuckm T fu Publishing r*l. J, Boh 56 - Mineral, Virginia 3117 703 894-5777 - Bod 5 - i SJfl MOTUNcRS NO RA0ALS MO RESISTORS MO COMPROMISE MOTUNcRS NO RA0ALS MO RESISTORS MO COMPROMISE

U

Cnmpi< ji< nv lanciry assem& ie t jeady io use I .hll. I . I .rw , < 1( HVh .-, niei 1> < 0i kfd M lei - -Vi . '-' 111 H . .H.-IMJ iwifret+ d i KJlM i i l n .'i v. t I > lufW fl IflOM nPivirr- M0rrt Li i.iffli i i t wi O ael dI k> rt lo i ij jf.m d iLn ctl I r i n iii.J.jij'r cgntw trraula(6r wi(lh nn yt hor in nj * i,f nni Includes Lu riim mnldfKi msulatfira molded o1 lop quality mafi rn*l wilPi Hiyl- i if-ic-i ir- (jualdies. ind dtcftonl wwtfiftiablHrv Cwneivk1 rsi Nation inn...

Winter Design

Winter Design is offering a unique gift for the office or home for engineers, technicians, hams or computer fans a clock made from an actual etched printed circuit board. This battery-operated clock is 17'J x 17 and comes in twocolorcombinations blue board silver etch silver frame white silk screen hands and numbers or green board silver etch sitver 1 . . . - - numbers. The price is 49.95, plus 5 S & H. Contact Winter Design. 267Court Rd., Winthrop MA 02152 (617) 846-5745. Or circle Reader...

Controller

Finally a coniroHer mat has solved control and audio Interconnect problems between multiply radios Your .radio system cangrowio mumple sites and su etch torhgndreds of miles - and yet any radio can be fully controlled from any designated input. Finally a coniroHer mat has solved control and audio Interconnect problems between multiply radios Your .radio system cangrowio mumple sites and su etch torhgndreds of miles - and yet any radio can be fully controlled from any designated input.

Call Today For Special Quote

In our continuing effort to present the best in amateur radio features and columns, we reoognizc the need to go directly to the source you, the reader. Articles and columns are assigned feedback numbers, which appear on each article column and are also fisted here These numbers correspond to those on the feedback card opposite this page. On the card, please check the box which honestly represents your opinion of each article or column. Do we really read the feedback cards' You bet The results...

FAX

Insttflcitly retrieves u> screen or file *C and Macintosh versions. Runs wilti or without a hard disk. Edits and prints address labels. Exports data to ASCII format. . TX . i . 1 -s. I IB Popup I'SR pops up willi user selectabfe hotkeys Transfers name jnd address to keyboard buffer. fJemutthV 5u rut bibt AKhonirTfin tmo frorti Canpuikfv, GO H AM NET library 121 PC 1.44 Meg 33 disks 79,95 PC L2 Meg 5.25 disks 69.95 I Li m Base program onl> ) 9.95 HliPopup (...

Cv

Aot listings are 73 s new sdvertiHf* itsu month aot listings are 73 s new sdvertiHf* itsu month *adverti ars wIto con buted t the national act vise*y twtimrle* fNIACj Tis the Season to Give and Receive We would love to send you an authentic, original, one of a kind, beautifully styled, barely tailored, 73 AMATEUR RADIO TODAY T-shirt. All you have to do is send us 19.97 and sign up any one of your ham friends for a year subscription to 73 Amateur Radio Todayi So pick a buddy, family member or...

Buckmaster Publishing

I So DiiS-i J. vr& I - ru , iiL TST I* S -Tm* 60 40. Xk 17.11 TSTQ 3 , ul la W.--ri -Mt - i* j , m+T. OX G Ii* * rV . I So DiiS-i J. vr& I - ru , iiL TST I* S -Tm* 60 40. Xk 17.11 TSTQ 3 , ul la W.--ri -Mt - i* j , m+T. OX G Ii* * rV . R jJv 10 U IDCEIWS J- Jtiot ta tun fiBG * j Lr mtv trit ro Ui' r. . . r F the (W I ' i VJr ' rif h'njj r r Ttcb or M- S'M Pf1 J Sox 50062S Pravo l1 i Htt S i Inp i if Mci h r ItoBiiKd IB 30WV KJ I 500 fli S i Inp i if Mci h r ItoBiiKd IB 30WV KJ I 500 fli

Accessories

TD-3 SUBAUDIBLt TONE DECODER ENCODER Wt Acfiustebte for any tone De gned especially for repealers, with remolo control 1 ilv.i re deactivate provisions A COR-3 REPEATER CONTROLLED kit Fes lures adjustable tad it tfrne-out timers, solid-slate relfly. courtesy beap, and local speaker amplifier '19 C *VID kit. D ode programmed any time ft the field, adjustable tone, speed, and iiTtWf( to go witn COR-3 S59 COR-4 ktL Complete COR and CWID all on one board for easy construction, CMOS logic for low...

Departments

66 Above and Beyond 80 Ad index 72 AskKaboom SB ATV a6 Barter 'n' Buy 85 Dealer Directory 17 Feedback Index 66 Ham Help 60 Homing In 8 Letters 4 Never Say Die 62 New Products 93 Propagation 57 QftP 7 QRX 88 73 International 90 Special Events Builc a h ei --ha t antenna see page 32 fi Jjkc being iht Fieri ht here in our nffices' Haw ' just lake advantage of pur h HI) BACK card n 17 You'll nOtici a feedback number at the beginning ol each artjc tr i nJ colu mn We1 d like you to rale what you rcjd...

Active Antenna

Cremtped lo< ipece Get torgMre perlonnarKe with ihig desktcip iinienna Property tjnpignect unh h i dual H F a nd V H F tu i. ui tr y aro bu il m ty bip ante dita u wol l as e*larna jack RF gain control and 9V opi-i.ition makes Lrfiil ideel ro- SWLS traveling tialft OJ CSAfter 'j-li''s who ne hofler recepuon Ttw -naiching case ind knob sei a .-esitie t*i.l a h-. yc rvd OoJI ar took 1 AA-7K 24 95 Ma cJwa C45* 4 sei. CuAA 12 95 Build your own mm ham station St n ktivo II motu' AM, CW, SSB...

Circle Oh Reader Service Card

ATV CONVERTERS HF LINEAR AMPLIFIERS fsi J A IIU istti USA 1 IS ANT79L W 1 11 Ft AN (H W I 1 1 AB311 MOW tl l 40 Hf * MRLlflEM r*' V DTD Q iA BUllETIK fsi J A IIU istti USA 1 IS ANT79L W 1 11 Ft AN (H W I 1 1 AB311 MOW tl l 40 ow ma Ji toi ww lut it Altul Q W fil) M * MAT typ TtLliMiipN iOfiVEBTEHS POWER SPUTTERS m * COMBINERS ATVJ 4JO-JS0 _______ F & 5 K i 2-jOMhij ATVJ lC A -FCTj ItO& lKil a Walt PlP -Parl . ATVI m- l JG.AS- T. I r.4 St Kn tWMlIlPEPl-i l ._. . Iii BEAT A MtlMai dii M SH...

Signal Generator

Fmaky j krw-cos Jac quata> signal gftfwretou a -.j-alternative to the 57,000 generators Trw RSG-tO < s a hard working. t> ui easy lo um generator ideal for the lab as we' ae for production -al l n it tpr les 1 ban 3.00 a day. Foalunis 100 kHz (O GG9 MHi * 100 H* i qsoIlMion lu 50 MH i tM Hz above* 130 to i lOdBrn output range *0 1 dS otflput resold ion -AM and FM modulation *20 pfOflrammiiMe memories Output setedion in lis. dB. dfi i a in msiant con vets > on between un +RF jjipur...

Cable Tv Converters

Zenith, & many others. New,r MTS stereo add-on mute & volume, ideal for 400 & 450 owners. 4030 Beau D-Rue Drive, Eagan MM 55122 PC GOES WEFAX 3.0 es s professional fax recepikxi system for the IBM PC. It includes an AM FM demodulator, software, cassette tutorial and 335 page manaul. Check thhs partial list of our advanced features PC GOES WEFAX 3.0 es s professional fax recepikxi system for the IBM PC. It includes an AM FM demodulator, software,...

Circle On Reader Service Carp

Flash cards 'NOVICE thru EXTRA' theory Key wgrds underlined Over 1600 sets In inel For beginner, OMs, XYLs & kids. TECHNICIAN GENERAL A& VAftC D E Sh.por*) t - S 3 M Z or niK S 5 tW CL L E DiSC CU T '- VIS STUDY CARDS P.O. BOX T6646 HATTtESBURG, MS 39404 Riil- Ifl ti G W S -- CU JyM*J* M ( - ftfeM V - J If ' S -Adjustable code speed and tone -Beginning lesson menu -Display (groups, lines, characters) -Hide and Seek text option -Letters. Numbers, Punctuation, Qsignals -Random character...

Write Or Call For Our Complete Catalog

73 Amateur Radio Today November, 1991 27 WHY IS THIS TOUGH OLD BIRD STILL THE INDUSTRY STANDARD WATTMETER 30303 Aurora Rd.p Cleveland OH 44139 U.S.A. - (216) 248-1200 * TLX 706S96 Bird Elec UD FAX (216 24S-5426 WESTERN REGION OFRCE Ojal CA - Phone (805) 646-7255 Copyright 1991 Bird Electronic Corp. Simple, No one's been able to improve on the basic Bird Model 43 THRU LINE directional wattmeter since - . . . ' . . . . Sir its inception not even us. Rugged, reliable and accurate, it's also...

Sah

Adding multiple links is possible* hut the external hardware must be built to switch the control and audio signals. To add a simple remote base to the basic repealer, see Figure 5. There are only a fe1* extra connections that have to he made to add this type of remote. A small amount of interfacing may have to be done to connect the PTT 4nd CAS lines to the repeater controller. Although thi> is very attractive, the link car. only he turned on and off from the repeater,...

Patch

Here ero just a tew of the Ultra's advanced Features Load, save, change gjllmmT.iones. Packet r,r nim tm- unNiruiad vDi buMrv Volts clod* secutes yvertts DaSy W wkiy Super Macro * user programming language *300-4 digit uwr access cod & Printer toeing o lelephone numbers dliHc*dL usa a Mne, function* Holding PoJlte IDs tft Ememitl nlay contrito CTCSS ronc i.--M -CWPriciice rthvaics Socuf* v nfldn t ion,- Voce user Mil sign viPen tegg ng on +Voif jg prrponiiirjE courtesy 0- ep stgrni stftngrn...

Receiver

FM maximum frequency deviation Carrier suppression Spurious response Unwanted sideband suppression Microphone impedance Frequency response Image Ratio iF Rejection Selectivity RfT XIT variable range Notch filter attenuation Audio output power 160, 80,40h 30, 20, 17,15,12,10 meters 100 kHz-30 MHz A3J J3E (USB LSB)t A1 A1 Aj (CW), F1 F1D (FSK)t F3 F3E (FM), A3 A3E (AM) 50Q Max transmit 20,5 A receive (no signal) 2 A 13W x 4,7 H x 13 D 11 kg (24,25 lbs.) approx, SS8 CW FM FSK-100W, AM-4QW SSB...

Anywhere

Jt is impossible to describe the capabilities ot SWISSLOG in Ihe space allocated here. I can say with absolutely no reservations that h is the best logging program that I have ever seen, and am now using SWISSLOG myself. Dick Goodman, WA3USG 73 Magazme, June 1991) ' i have 9500 QSO's know what i wouJd do The QSL's are coming in stacks from the bureau even thougn I have a QSL Manager. SWISSLOG is worth It just for that, let alone all the nice record keeping tor DXCC and WPX etc. Paul Wyse, 5Z4FQ...

Tha

Here's a radio that deserves a double-take The TH-77A is a feature-packed dual band radio compressed into an HT package. The accessories are compatible with our TH-75, TH-25, and TH-26 Series radios. Repeater and remote base users will appreciate the DTMF memory that can store all of the DTMF characters *, , Af B C, and D) that are usually required for repeater functions Wide band receiver coverage, 136-165 (118-165 AM mode 118-136 MHz after modification) and 438-449.995 MHz. TX on Amateur...

Edited B Y Linda Reneau Kaukm

Last December 1990 the FCC changed its policy against code waivers, exempting severely handicapped amateurs from the 13 and 20 wpm Morse code requirements. Recently, the FCC clarified the term severe handicap to mean a disability that extends for more than 365 days after the certification ' This announcement comes at a time when some amateurs are thought to be asking for exemptions for handicaps that do not interfere with telegraphy. The beginning 5 wpm code requirement cannot be waived, since...

The Tiny

AVAILABLE in 138-174 MHz Of 440-470 MKz Gall for special prices SiffldtorflflflHer carsiirnaJler twdgsts lis lor police. 1 ir WAR S. CA R, Arreted r TV, FM Sie'so Traramrers & ReoaJvm Receiving Convened, Inj tared Equipment. Vdeo Devices. AjC O. Ut_F iq UHF. Unuauftl Items. Difficult o Find All Published, Kntfnwtd* Ttiltd fend Proven Dcjlfcfld Thouiunda ofSallilVd CuMumcn 'L'rchiikiil Assistance Available Sold SASE o North Country Radio - Box 53-A ' Wykagyl Station * New RocheJIe, NY lO Da...

Packet

Commodore C& 4IT28 pHM rase ntadau Uses tamom O rtnait gcoffi Lu.** < ti f. -rfi fcw a le -rJ ns rr sotiwra PC board aJf wea sary arte lull ilocumnnlu lONOISF PREAMPS ya e mal - k 1 jj iaiMin. un Hf-O t i*d Jnpta tot p > 4h p tsTm nt acetk -j gt.it and Ibat ure uaranlfl-.-d to improve leceptionf Specify band 2W PR-1 . 220 MHz Pfl-20 440MHz PR-iO Each kit 17.91 UnstndiMhpDles-sional perrarmanc* Self powered iiom pnof i'tie, tfansmrrs n FM Enoadca i bond up to ** mile installs easily...

Fih Shown

All unM'j tranamh stable sjgnai m 66-TOfl WH FM bttnd up to 300' ejicept fur hi uo er FM-t thflf iJOOS up lo mNo. FM-4. kmg range r gh pow wKh , amao setton. p ui > 10 FM 3 complete unrt includes case. Dattp*y swiTirh. anlen-na thf,i -in cpnden r m e Eji- .ism fidelity vHry small, ki. itfi.S FW-3WT, as above, but iully wired and tested . Jt9.95 SMC. miniaiuTe serwltlva mike car-Iridgitoi FM'1 2,4 S2 95

Way Radio Service Monitor

COM i he world * most popular kjw-cosi mom- iv For snaps frg or smaN, ihe COM 3 drivers jvj.iukI capabilities lor 3 tantaiic price -and ou- new loasc- program uikjws you to own a CO M-3 Icy Juss than 3.00 a d y Foal urea 'Direct miry keyboard < vnh programmable memory 'A'.jiiio & tilnv miner fluency counter LEJ'j frv j .ii.i i IrequeflCyferrgt deviation display *0 1-10.000 pV output tevels H gh receive sensitivity (ess Ihan 5 (jV * 1 00 * Hj io 999 Wi MHe 'Cantjn jous frequency cow-age...

Mcqf

If you want the best Packet or multi-mode equipment available, look no further. These data controllers have no equal when it comes to features, performance and value. The versatile DSP-2232 (above) is simply the most powerful multi-mode controller available to amateurs. It features Digital Signal Processing modems, dual simultaneous ports, all known amateur digital modes, Packet and AMTOR mailboxes, and much more. The legendary PK-232M BX (top right) has long been the most popular data...

Nogroundantennae

ANT-Ventures presents a new concept in VHF mobile antennae. The unique design allows these antennae to function efficiently WITHOUT A GROUND PLANE. Perfect for use on those vehicles with plastic or fiberglass bodies. Great for portable or apartment use, these antennae can be mounted to wood or metal and also directly to the back of your radio. Pre-iuned at the faciory. these amennae provide operation across ihcir designed band, with a VSWR belter lhan 1.5 1 and a power rating of 200 warts MARS...

Connect Systems

Connect Systems is now offering a new tow cost full duplex interconnect, the Model CS-80G, which can be user-programmed to operate either full or half duplex. The Model CS-BOO features a built-in repeater maker, a nine-number memory speed dialer, last number redial, a built-in user programming keyboard and digital display readout, user-programmable Morse IDr hookflash, ringout (sounds like a phone ringing), line-in-use detect call wait- BayCom from A & A Engineering is a software-based...

Expandable Repeater System

Standard and Computerized Controllers Standard and Computerized Auto Patches A NEW CONCEPT fN REPEATER DESIGN, THE Hi Pro ' Er 13 AN EXPANDABLE REPEATER WITH THE FOLLOWING FEATURES A BASIC REPEATER WHICH WOULD INCLUDE A COMPLETE RECEIVER, TRANSMITTER. COR, FRONT PANEL CONTROLS AND iNDfCATORS, LOCAL SPEAKER AND MIC JACK AND CAPABLE OF FUTURE EXPANSION. ALL HOUSED IN AN EXTREMELY RUGGED, ENCLOSED, 19-INCH RACK MQUNTABLE CABINET. THIS SYSTEM CAN BE EXPANDED AT TIME OF PURCHASE OR CAN BE AN...

Special

* Two removable pallets hold over 60 tools * Case top has built-in document holder * Case bottom is partitioned Into 3 areas A handsome black case to organize and transport your valuable tools and instruments. This is the same quality case used by iiterally thousands of professionai field engineers.Case is made of high impact polypropylene, and has snap-action key locks and a padded handle, Size 17 x 1216* x 5 Tools are nol included. ' 1 * Same Day Shipment Money Back Guarantee Terms Visa. MC,...

Huge

Communications Receivers Portable Receivers Scanners Amateur HF Transceivers VHF-UHF Transceivers HTs and Mobiles Amateur and SWL Antennas Accessories and Parts RTTY and FAX Equipment Books and Manuals 1280 Aida Drive Dept. 73 Reynoldsburg, OH 43068 What is compact, portable, and efficient Covers 17 through 10 meters Is omnidirectional, with low angle radiation Reduces QRM. QRN, and harmonics Has one-knob tuning for low SWR More and more hams find themselves living in subdivisions, apartments,...

Ver Features

VOICE fD'tr AUDIO MIXER 2v D u fX DRIVt TIMt OUT, ID. TIMtRS SMALLSlZb3 4** 3 V SOUEICH COR KEYED MADE fl'i U.S.A. HJGHUUALJT> LOW PHECE 6ATTI RV BACKUI-1 HAM SI HbMAllCS INLI UL bL GET-TECH 201 fliFer Road Nt w Windsor NY 12& 53 SEE VJFW N JUNE 31 73 H V A ADO IS FOR SttffWJC A KO HANDLING COO CHAHGES Aftt AODmOHAL C RCL 195 ON READEft SERVICE CARD 2.9 > 2.25 2 95 14 95 12.25 10.95 10 & 5 1J.5 .60 19.95

Ttsj

Block diagram of modifications to add a basic link to the repeater controller. eJ u> lhe correct level. Follow this b ikljust-ing the DTMF decoder level on the computer board. To set this level, simply transmit a DTMF digit and urn R17, on ihe computer board, 20 past the point where LED DSI ii liis. If you notice that some digits light the LED and others don't, try increasing the level a little. II the increase in level doesn't help, the frequency response from the receiver isn't...

Call

R-100 100kHz 856GHz AM FMr I2vdc 707.00 599* R-7000 25MHz-2GHz receiver 1199.00 1029 RC-12 Infrared remote control 1er 70 99 SP-3 External speaker 65.00 CK-70 (EX-299) 12V DC option 12.99 MB-12 Mobile R-9000 100kHz-2GHz iill mode ret .,. S5459.00 4699 All Pr ices are subject to change without notice.

The Next Generation In Highperformance Hf Receivers

Once again JRC breaks new ground in shortwave receiver design. The new NRD-535 has all the features SWLs and amateurs have been waiting for. General coverage from 0.1 to 30 MHz in AM, USB, LSB, CW, RTTY FAX and Narrow FM modes. Advanced ECSS operation for phase-lock AM reception. Variable bandwidth control (BWC). Tuning accuracy to 1 Hz possible with direct digital synthesis. 200 memory channels with scan and sweep operation. Triple Superheterodyne receiving system- Superb sensitivity,...

Jkm

Awhile back I was reading one of the ham magazines and saw an advertisement that really piqued my interest, It said, ' World's top perlorming fiberglass omnidirectional base station antenna then went on to say that it operates 12-10 meters. This was too much to lei pass by, so I sent ior one. The box arrived via UPS and inside were three pieces of fiberglass-covered tubular antenna. also found an instruction sheet and a few other papers. I quickly went about getting the antenna into the air for...

Actual Etched Printed Circuit Board Clock X

A unique gift for the office or home for engineers, technicians, hams or computer people. Word is spreading fa.t- 2 METERS-220-440 for total performance and v*lur Hot GE, not v n Motorola. RF per tor ma nee really counts 'i tough repeater environments. s The KRF 5000 fj t-1 -j e-S , h el* nil resoi 3'ors 2-poie ot IF i.J iitig an- a precise i. hnnitl tr gger squelch a Tr' auiomabc threshold switch-if The fansiniti i give yo . )ean TMOS FET power itv sequential (or> paging aut patch re vers...

Cods Welcome

DAN KBGXC-KIR8Y KAflZTS-LOUJS KACIPN RON NflKMR DENISE YL-MALiNE XYL MIK SMN CfiiiS CallS Cans Cans CallS Call CallS Cans Cal S Cans Calls Call Call s Cans CallS CallS CallS Galt S Call* Cans CallS ft 10 D Deluxe HF w optkms FT. 10OO De lu X FT-767GXGel FT'757GXll< jMt FT-747 GJUmBL FT- 11 70CM F M FT 26R2M FM 2WHH FT 76 70CMFM2WHH

Grv Antenna

Gifrv VULriQANKH tfi S sr iH rtJf 3 'JtHj Ii f -fli tx* -r. T - t.-i- ' 1 j, j - A iijUd' TT . Gifrv VULriQANKH tfi S sr iH rtJf 3 'JtHj Ii f -fli tx* -r. T - t.-i- ' 1 j, j - A iijUd' * KS ' h*n***3 trjopnoson tne adwm mOAKt On J0 in bivci m Jjtf IP -- . M - * - - . TT.J - . - iginiinMiMofif TB tHr nQOtpniwiciBi lomKPiM mmM'iaiT -.b . ,1 tn Hi J - iN Pf P irte Di sen i *yn< .tv j- -. GS, JR 40-1Q si IW Swc

Service Caro

Tuners, furriers, t V, computer RM und other similar QRM Why listen to carriers The Mj icNoich ftllcn is ig Iii automatic. No tuning neteflsarjf, - 4.ji-> il> te l lh lKii cen (lit rip andun 4 can In- Ith mi j lit I u lime h hihk hjhthmiil' SSB. * shim* filter rvpentina irh i > Z nil-i-r ' , iin > L U t - ntv ris JJ1 > 4 SMI M LI nal und r u ID o f r 9 Ciirrivr. - rct ihresl2 VTM -uaiaJlynvailji hit from i he Jic t t H- J hJ.l'Is i m your rln. UPS shipping icitideil CA residents...

Call Or Write For Special Quote

Wh rt il corr s to FAST,DELIVERY HONEST DEALING and PROMPT.pFPrNDABLE S j g ' - fca uE We don t just adverse n WE GIVE IT1 AMERICA'S MOST RELIABLE AMATEUR RADIO DIALER In 1937., Stan Burghardt (W01T), because of his intense interest in amateur radio, began sell ng and servicing amateur radio equipment in conjunction with his radio parts business. We stand proud of this long-lasting tradition of Honest Dealing, Quality Products and Dependable ilS-E-R-V-t-C-E*' Above alt, we fufly intend to carry...

Bulletin

CIRCLE 262 ON & EADER SERVICE CA D CIRCLE 262 ON & EADER SERVICE CA D minute -how do you know that the frequency you are measuring is right on in the first place Find yourself a commercial FM radio station tower. FM broadcast stations are constantly monitored by the FCC and the FM station chief engineer for being on frequency within just a cycle or two. Get within a ballpark length of a big FM radio station antenna, and your counter now jumps to life. Many counters require a tiny...

Delta Research

PO Box 73677 * Wauwatosa Wl 53213 FAX or Phone Weekdays 141A) 353-4567 * Li it pa ral I el led I Sta tist fcs. Auto QSO Alert Indicator. Auto Beam 1 findings. * Auto Count rv, Prefix, and Zone Selections, Print Loft Sheets, QSL Cards, andQSL Labels, Dual Clock Calendar. Scaith and Sort on Call Sign, Date Prefix, Country, State, CQ Zone, UU Zone, or User Defined Fields. *18M Compatible. AMD MUCH, MUCH MORE fNirti> Ittvv RrsiiitTlts P rtInduiit Snfcs Tax) 30 Day Money Back Guarantee FREE DEMO...

Offer

GeierKBWM 1Z Magazine Forest Rd. Hancock NH 03449 Before we get to this month's topic, let me direct you to the table on page 73 listing those parts source addresses I promised last month. By no means does this list include all of the mail-order outfits out there, but it should give you a starting point. By the way, these names all come from catalogs I have here in my home lab. You, too, can get these catalogs, and most of them are free. 1 strongly recommend that you get as many as...

For All Students

_ CONDUCTED BY CAROLE PERRY, WB2MGP_____ Registration 5.00 Advance 56.00 Door Valid Both Days (Advance deadline Feb. 3rd) Swap Tables 20.00 each + Registration Power 10.00 per User Campsites 3 Days (FrL, Sat., Sun.) 40.00 4 Days (Th rs., Fri., Sat., Sun.) 55.00 Headquarters Hotel Miami Airport Marriott 67.00 Single, Double Call (305)649-5000 - Speak Only to Reservation Department Must Mention Tropical Hamboree to Get Special Rate. Deadline Jan. 22,1992 --After Deadline, Special Rates on Room...

St Art Ck

Mei*. WA 90004 CiSfl > VIE StKVMX CtWT S l & 102Stv fat S rth, St 52-R IrvlJfr, CA H2714 1777 Pto* nil ftHtvjj. Siitf 201 A ania GA 30349 3071 tad lift f ctimmd. BC m 2Ti raiwto 23WH16* Awe f frflfM* ft 9 KH U1 JUlH HKtilkalttC* Alt ttbr Uj cMSi* fe& Aui kVcrrftU looms 1G-24I0and IC-3220 dual tend mobiles have raised h performance to exceptional new levels. Whether you need the IG-2410's ability to receive two frequencies simultaneously within flie same...

Ttp

Speaker output POT-WIPER repeater audio in aux audio output auk 10 input link TX audio unk id input repeater tx audio id input aux audio in pl disable PL deck *h cas in MUTE input autopatch enable cas out unk pttin link cas UNKMONI unk audio jn aux audio mute vol pot + 12 tn GROUND Complete the board by installing the remaining components. See the diagram in Part I in the Octobcr 1991 issue. It shows the necessary connections to the audio board for a simple repeater installation. For...

Cw Enthusiasts

CW Enthusiasts has released PC Super Keyer 2.1. This software for IBM compatibles provides all of the features of expensive memory and keypad keyers in an economical and easy-to-use package. It features paddle or keyboard input, disk storage space for eight unlimited-length messages, transmission of any text file, beacon operation, message within message, on-screen display of paddle input and local UTC clocks. In addition to functioning as a keyer, PC Super Keyer will send random five-letter...

Dc Power Supplies

Complete Line of DC Power Supplies to Convert 120Vac to 13-BVdc +0.5Wjc. Solid stare integrated drcuil provides excellent regulation -Output voltage maintained up to 95 of no load value -High quality filtering tor low noise operation H-luavy duly power transformer for complete me isotetion -On Off indicator light and rugged on off switch on facepfate -3 conductor grounded cord on 10 Amp and Jarger models -Current limiting electronic foldback for auto overcurrent Tripp Lite DC Power Supplies Are...

Steel Keys Sealed Gold Contacts

An ultra high Quality DTMF Encoder lor absolute reliability and function Software-Di J ven and Keyboard Programmable High Capacity* 30 Digils pe* LocliNdr * SjJ Tone Non-VoiaMe Memory Auto Tat PIT Disable 5-10-20 DPS, Pure S'flnaF'iflgi So PopsH Sreed AO( * Pau Ad * 0> g> ( Eipand WarlJ Send Wide Operating flange -22 * tfi0*f t 6 26 VDC Mull'-Function Programing * To Emphasis is on Quality & Reliability P.O. Box 2020 Pollock Pinea. C 910) 44 -5444

Lcd

6 7 811 x 1 3 4D x 2 1 2W. 12oz wt 100 Channels, Low, Air, High, UHF & 800MHz. Extremely compact size. Unrestricted 800MHz coverage. 100 channels permanent memory, Earphone Jack & Attenuator. * 5 Scan Banks, 5 Search Banks. - Telescopic and Flexible Antennas w BNC connector. AC & DC Power cords w mtng hardware. 25 to 1000MHz w 50'coax, Mag Mrtt Mobile Antenna, 15' coax. Cigarette Lighter power adaptor. External Speaker with mobile mount. Extended Warranty. 2 3 yrs AS300 59.95 MA 100...

Toll

MAX vou to walcti and control a single VCR trom oihsf local ene jn he hoLse Transmite Oq. & g and IR sign is jo to TOO leenhrough mini-caDie. Vo'KS on ud J eiovisio s al a hfT*). t> u1 a Sepafate *WAX* ' ce'.* 15 reQuir*4 lOf sacri V Car as te usad wift olhgr r conlnQ. F osvic such CD piay n ot s nrAos ZwzavSB ' ls hajtf* oC s grta. T arsn sson * dttafer than rrxjr ojtp rs vu tyv afcw reo unrts nt udflft iraramntt TOC BOifl. iOOk-iJp cat-.es am TJ-ans armer. Ttose rid* unrrs originaJty...

Information

4& E SupeT Grafid Master W9K 169 95 4J2B Keyer Paddln Com& ir.aiion 124 95 12E4 Color Fax RUY CW ASCII 149 95 27BT Furt Muiti Mooe CnTr 309 95 137B UyiD-Mode Cwifoi.e' 244 95 3 3 0W2I Amtf * Pre amp 119 317 30M7 W 2W Amp 24 & S 3 317 30 120W 20 WHi Amp 244 95 2 0G 3 30-5 2 W MM40 Amp 234.95

Eliminates All Video Copyguards

While watching renrjl movic ytHj JI nciticc aiinuyin pen-odic color darkening iftlorihift, Linw.mtid lines. flashing Or jjg cd edges. This 19 caused by the copy protection jamming lignnlt embedded in ihc video tape, such aa MacrnvUion copy protection. Thc DIGITAL VIDEt) STABILIZER RX2 com-plttcly diminaLes till copy protection* and jamming si inJ brings you ccysl l ckar pictures. Warning) Tbe RX3 nol in- ended to cj 30 DAT M r c nded o com comri thtt-d video tu ne*. yea r wa rn l n 1 y r c nded...

Ham Station

Evansville, IN 47719 0522 Store Hours MON-FRt 8 AM-5 PM SAT 9 AM-3 PM CENTRAL TIME send a sel f addressed stamped 50*> envelope isase) for new and used equipment sheet's warranty service center fqfl icom. raesu, ten-tec for service information call i 12) 422-0252 fax 012-422 4253 monday ' friday TERMS Pnces Do Nal Include Shipping Price and Availability SubpcnQ Changt Without Notice M sl Qrdtr* Shipped The Same Day COO s Wftlcume S4 00 + snipping)

Card

Ft MicroSat Packet Communication is now easier than ever using the PacComm PSK-1 with built in TINY-2 TNC W Only two cables to connect eompuccr and radio - Revised radio irucrface simplifies cable assembly - Pre made radio cable optionally available ft Modes of Operation - 1200 bps Manchester AFSK PSK for satellite access - 400 bps telemetry1 from Oscar 10 and 13 - 1200 bps PSK for terrestrial use (10 meter DX, etc.) - 1200 bps AFSK for conventional packet Features - Automatic Gain Control and...

Circle Ou Reader Service Card

Carole Perry s (Dayton 1987 Ham of The Year) introduction To Amateur Radio package allows children of all fihilitiesto achieve success Rfifiady-to-teach package contain Teacher's Manual with 26 lesson plans, Code Practice Oscillator for Morse Code practice, Spacecode audiocassettf wmch foirows lesson plans. 99.95 FREE Video Tape Showing Classroom Use Any motived teacner can teach tne program r Ham Rad o program is used as a moti vational tool to teach sKjKs m otner sutnect areas hourHotiire iS...

Circle B On Reader Service Card

WIRELESS CABLE - IFTS - MMDS - Amateur TV Ultra High Gain 50db > - TuneabFt 1.9 to 27 Ghi. * 3& -ChannBl System Complete 149.95 12-Chaiinel System Comptete 114.95 - Calf or write (SASEl lor FREE1 Catalog PHILLIPS-TECH ELECTRONICS P.O. Box 6533 Seottsdale, AZ 85252 lifetime (602) 947-770 0 (u DO credit n i i phone orders) WARRANTY MasterCard * Visa * CCD's Quantity Pricing

Rig Saver

* Allows you to saleiy moan* your hand-held or mobile radio whore you can see the controls * Vinyl coated plate protects your radio. * SlimLine 524.95. Heavy Duty S29.9 5 + S3.00 S & H. * Adaptable to nearly any vehicle or station use, Do You Know Who's Catling When Your Phone Rings displays callers phone number when your phone rings 70 QC * stores phone numbers y Y.YO , with date and time of call nwwyoni displays callers phone number when your phone rings 70 QC * stores phone numbers y Y.YO...

Mfjbb

Meters and 220 MHz 30 or 300 Watt scales. Also reads relative field strength M7G MHz and SWR above 14 MHz. 4 x21Ax3 in- 3495 WIFJ-1701 2195 MFJ-17020 MFJ- Selecl any of several antennas from your operating desk with these MFJ Coax Switches They feature mounting holes and automatic grounding o1 unused terminals. They come with MFJ's one year unconditional guarantee, MFJ-1701 34 95. 6 pos, 2 KW PEP, 1 KW CW, 1.8-30 MHz. 10x3x1 in. MFJ 1702B, 21.95 2 positions plus new Center Ground. 2.5 KW PHP, 1...

Ic Sa M Icsat

IC SAT 440MHrw TTFffT IC-4GAT 440MHz w TTHH H u si 1er Vibroplev Kamromcs Plus more . . . Thanks for your support. 1-800-426-2891 METRO (612)786-4475 2663 County Rd. I Mounds View, MN 55112 Super Minnesota Watts 1 -800-279-1503 radio parts that started it all When friends found I was interested in radio they siarted dumping old radios on me. I had a ball taking them apart and saving the pans. 11 Td only known that putting em up in the attic 'or 50 years wouid turn rhern mto solid golo 1 But...

Heart

11 Cummmgs Park Wobufn, Massachusetts 01801 (800) 226-4636 ( 17)932-4616 Geared toward the industrial customer the r targe catalog has all kinds ot parts, cases, production equipment, etc Many terns are available only in large quantities, but some can be had in singles This cai iog is worth it just so you can acquaint yourself *,th what s out there. P O Bo* 567 VanNuys CA91408 (800) 826-5432 They have crystal oscillators, linear and digital chips, RAMs. connectors, etc. They also have some...

Vector Control Systems

Vector Control Systems has released a new 16 x 16 x 1 electronic beam indicator Using a four-color custom-plotted great circle map (centered on your QTH)r the indicator shows your antenna's direction and coverage with a 5 degree resolution. A simple connection to any standard rotator control unit makes the beam indicator operational. The ad justable beam width indication is a special feature which allows you to match it to your beam's radiation pattern. The indicator is available in a...

Model

'ICS Intermittent Communication Service (50 Duty Cycle 5mm. or 5 min. off) The function of any DSP system can be described as follows The signal is acquired and converted to digital formi via an ADC (analog to digital converter), the digitized data is processed by simple fast algorithms, and the results are converted back into a usabie form via a DAC (digital-to-analog converter) or stored in memory. The foundation of DSP is Shannon s sampling theorem (you may have heard it before, but here it...

Mfjb

The best of aEI CW world's -- a deluxe MFJ Keyer using a Curtis 8044ABM chip in a compact package that fits right on the Bencher iambic paddle This MFJ Keyer is small in size but big in features You get iambic keying, adjustable weight and tone and front panel volume and speed controls (8-50 WPM), dot dash memories, speaker, sidetone and push button selection of automatic or semi-automatic tune modes. It's also totally RF proof and has ultra-reliable solid state outputs that key both tube and...

Reviews

A versatile HF transceiver with a d gita) difference N2GE 30 The Startek International Model 3500 Frequency Counter Speed, accuracy, and ease in a shirt-pocket onil WB9HRT A very economical vertical for 1017 meters WA4BLC Cover Tons of counters Cover photo by Larry Dunn Builc a h ei --ha t antenna see page 32

Qrp Transmitters Ham Receivers

Jam iho fun on ORP Thousandnol Ibese mlnl-niga have i> e ih sold and ions ol DX conrucis have peon made Imagme working Eastern EiifOpe with a transmit iy lhal's ham tadio at its besl1 TbaseCW rigs aretdeai mates 10 the oterwers al f ght They he* h o-pos4toi> va iaate crystal con rol (one pop4*r ORP XT At nclud-(-21. sne n ou f J and iu i-n a itf nna s tch Runs on vDC. Ajo ou rnatciW'5 case and tos set (or ttwne Ins vo look (Specify hand QflP 20 JO.JOorflO Matching esse A kuob set CORP iW

Kkc

We are happy to provide Ham Help listings free on a space available basis. To make our job easier and to ensure that your listing is correct please type or print your request cfearly, double spaced, on a full (8Vz x 11) sheet of paper. You may also upload a fisting as E-mail to Sysop to the 73 BBS Hamhelp SIG. (2400 baud, 8 data bits, no parity, 1 stop bit. (603) 525-4438), Use upper- and lowercase letters where appropriate, Alsoj print numbers carefully a 1, for example, can be misread as the...

No Tuner Needed

If you install our aniennas correctly you wiU NOT NEED A TUNER Numerous customers ha we confirmed this fact. The secret is in our Special balun. It matches the low-impedance coax cable to the high impedance windom-lype antenna. All our antennas are available for use with 500W PEP or 2KW PEP power Reao at our safrshec customers say All > etters are held on hie Fred WBYFK on hts GD-92KW It wofks greai Nine bandsT no external turner Adrian KC4MTP on h.s GD-6.500W It is so simple....

Model Vsa Antenna Coupler

The Barker & Williamson VS1500A antenna coupler ts designed to match virtually any receiver, transmitter or transceiver in the 160 to 10 meter range (1.5 to 30 MHz) with up to 1500 watts RF power to almost any antenna, including dipoEesf inverted veesT verticals, mobile whips, beams, random wires and others, fed by coax cable, balanced fines or a single wire, A 1A bafun is built-in for connection to balanced lines - Series parallel capacitor conncction for greater h amnionic attenuation. II...

T

The RBC-700 Repeater ControNer designed to uippon Repealer systems thai require multiple radios connected together it a site. The RBC-700 utilize 1 true 7 t 7 audit matrix vritch whieh aJliw several oottvemtr ns heiwccn ports .l ihcamc lime. In ihe HEiutnttian ahwe the T33 nnxJe upportirii z RepeaTer, 3 Duplexed LinLs tc dEffereni siTo, jrd 3 He mote biso. Ltoirt iitnple cumnn. uk. J u -cr could tic the Rcpc iicr and .1 Remote tu tine i ink. whih- the other l.intcs nre cornitiunicaimfi through...

Lmvba

Lisl price 423.33 CE price S289.95 SPECIAL 48 Channel St5 Watt Transceiver Priority RELM's new LMV2548B gives you Upto4 channels which can b .1 organized into 4 separate scan areas for convenient grouping of channels and improved communications efficiency With an external programmer, your radio technician can reprogram this radio in minutes with the PM100A programmer for S99.95 without even opening the transceiver A similar 16channel, 60 watt unit called the RMV60B is available for 489.95. A...

Rotator Comparison Chart

RjEATE is serious about long term reliability. The CREATE RC5 series rotators were designed with the serious D.Ver in mind. Three models for medium, large and ultra large antenna arra gt s arc available. Features of the RC5 series Cast and machined aluminum case Worm drive brake gearing Preset on 3 models ' Circular dial indicator Circle overlay available for U S A west - central - east Create CK46 Mast Bearing with strong anti-corrosion features also available.

Baluns And Ununs

Available as do-it-yourself kits and packaged and tested units Saijns and ununi matching 50 ohms tq rcp dances L- iov as 3 Otrm a a as rugh as 800 o'r.m. lt 1 Specified etticencies 95 to 99 'iJepentttng upon impedance-teweis 1 Designs optimized far bandwidth, efficiency, impedance-1e ei and safety margins 1 Power categories I conservative rarmgsi Low POA ' 150 iVatts continuOLis Hign-iK ' 1 KW io 5 KW oontinuDie 1 ifi tes gn a.a-iaote trom lt n-ir page r w designs Lipor teqti sl assymimg feas2...