A E

2 *rHD THE 4.ft P4t ARQuMQ TQHCHO ThE HlGHT N ju9 t Oi TUiTtfS 1 SCiXEP END S TO E*0 SAME. PHOCEDUHL LHtliPT THREE WIRES. Figure 9. Winding the (a) bifilar transformer, and the (b) irifilar transformer. The tricky part of the rig is the bandpass filter. The jumble of products from mixing the balanced modulator and VFO frequencies are all present at its input, and you must preselect the 28 MHz energy, pole by pole. Start first at the top of L2 and rotate the trimmer until you find a peak of 28...

Advanced Fea Tures Such As

* Speed Dial Rediat Selectable sampling mode * Keyboard Programmable CW ID Built-in keyboard display * Automatic setup, MAKE OUR CS-700 THE BEST CHOICE GOING IN LOW COST SIMPLEX INTERCONNECT The CS-70Q will interface any FM base station transceiver to the telephone network. When installed, mobile and portable radios can both initiate and receive telephone calls fufly automatically. SAMPLING MODE No other interconnect offers user seleciabie VOX enhanced or VOX controlled sampling. Pick he mode...

Aircraft Rcvr

Fantastic rete'-war ihji capturas world wnh j a j 12' anlennai Can r rn-'> MHj portion from 4-ti MHz True superhei ha umocih varactof lunjng AGC. RF gain control, plenty ol speaker volume and runs on a 9V fcanery Faio-. mg Scoj- schooJ or duti p o -d CTO de5 htruri or Tuft fcr the mssi serous QXi' For tfie car. cons def our six fra two n wos car d al Ado some nreresr so yw drive f meJ Matching case set lor Sfl lrCSfl 51 96 M tieft og case aer or SC CSC S12 95 near octtrng anrtrai...

Allband Radio Products

3378 - 7D10 Douglas Street Victoria, B C, Canada VSZ 313 Phone Hotline 1-604-361 1224 Fax Hotline 1-604 383-5454 The only repeaters and controllers with REAL SPEECH Create messages just by talking. Speak any phrases or words in any languages or dialect and your own voice is stored instantly in solid-state memory. Perfect for emergency warnings, club news bulletins, and DX alerts. Create unique ID and tail messages, and the ultimate in a real speech user mailbox only with a Mark 4. No other...

Ameritron

Ameritron announces the re- ease of the new Ameritron QSK-5 Electronic T R Switch for linear amplifiers. The QSK-5 gives you switching over six times faster than a vacuum relay, and works with any linear amplifier. The self-contained QSK-5 provides full CW break-in and rapid switching in digital modes as well as faster, quieter switching in SSB. It operates on 120 VAC, handles 2500W PEP and 2000W CW when the SWR is below 1.5 1 it handles 750W on RTTY and packet. An optional cooling fan (CF-5,...

Arrlbooks

ARI99E ARRL 1991 Handbook (60th edj 39 chapters, featuring 2-, 100 tables, Hgurcs and charts. The most coropreheJisive, well organized and affordable source of amateur radio reference material. 1232 ptgt& rtySM ARlOJto ARRL Operating Manual Packed with informal ion oil how lu- rriCLk the best use oE'your station h jncEuintx. truerfacing home Computers, OSCAR. VHF UHF, contesting. 15.flfl AKOi' i Antenna Compendium Vol, 1 Materials mn verticals, quaJs. loops, yagis, retluccd size antennas,...

Atv

3S W.Ll Mpdrll A I 79.93 Kit 75 W tr Mnd l S75-A 1119.95 kit Available rt krL of irrd tr y Led HEJ PKJK l) J 59.95 KEB 7 PCC (PC B rdj 1 10.04 Ht Ht 7'- 1 (MaiiualJ S 5 00 Modrl Q He at in ft,5j 12 l. * IJ.00 CHS-f, Copper Sprcaritrj6x6x1 4 t IS CHIP CAPS - Ktrnil ATC MET Al CLAD MIC A CAPS-Unelea Stmco HF POWER TRANSISTORS MIIMI-CSRCUlT MIXERS SBL-t 1 540Mi 1 6,50 sBL IX (10 IQQQMr j i r.9i VK2M-34 4B RF i 1.20 5 - 590 - i - J0 Fvrrrti B J * -3D 3S W.Ll Mpdrll A I 79.93 Kit 75 W tr Mnd l S75-A...

Aunco Electronics

438 Amapoia Avenue, Unit 130 Torrance, CA 90501 TeL (213) 618-8616 Fax (213) 618-8758 Two Year Limited Warranty. Specifications and features are suOfMt to change without notice or obligation ICU E5T RETAJL WHOLESALE P CES IN US OtfOFifi SHIPPED FJOM TOOt rTHrj 24 H ICU E5T RETAJL WHOLESALE P CES IN US OtfOFifi SHIPPED FJOM TOOt rTHrj 24 H 732S1 j RESEDA BLVD 0EP1 1856 RESEDA. CA 91335 732S1 j RESEDA BLVD 0EP1 1856 RESEDA. CA 91335

Baluns

W *t J Cm -lype Beam i 1 W 13< H ( Qlganun I 1 Opf*i-*iiT IPCMJ t2t H Ft c Ad pig D'SCG m Catalog. Ev r QifDg for wt irrtpnrns. conrtectors. cou. Allow 4 - E rwki ft* Bulk miiI si Catalog or nd 2 to catalog by Priority Ua> 1 MenUon act for ttwse pncM Pnt are subject to change, AM SHIPPING Calt Ick COD Vlsa A MC weEcom . Give card eup. date, stgnaijre. VA residents add 4.5H Sal to. See ad in OSTand CO. C L Houghton WB6 GP San Diego M< crvftave Group 6345 Badger take Ave San Diego CA 921...

Blt

With the success of their first flight, the South Texas Balloon Launch Team embarked ort a much more ambitious effort. This payioad contained an ATV transmitter with a live TV camera GBC CCD-100)+ active mirror control (to point periodically at the horizon or the ground), digital voice ID on the video subcarrier (the messages changed with various stages of the ffighi one of them actuaflysatd.'Tm falling'during the parachute descent), a CW HF Photo D< The chase team recovers the first BLT...

Bnb

WANTED Yaesu FT23RHT and pre-1900 microcomputers for museum. KK4WW. (703) 231 -6478 763-3311 8NB234 NEWt NEWt NEWt NEWl SPEAK TO THE WORLD Amateur radio Eanguage guide Written especially for the ham radio operator Hundreds of phrases Volume l Spanish, German, French, Polish, and Japanese, Volume 2 Swedish, Italian, Portugese, Croatian, and Norwegian -Send 10,00 per book (postage paid) ROSE, P.O. Box 796, Mundelein IL 60060-0796. BNB254 CHASSIS, CABINET KITS SASE, K3IWK, 5120 Harmony Grove Fid.,...

Books For Beginners

0sB65 The Beginner's Handbook of Amateur Radio 2nd EditonAy Clay lister Combine , theory and practice in an easy-to-understand tonnai. and provides information for choosing and in-stalling radio receivers aikl transmitters, antennas, transmission lines, and lest equipment, 400pa es, 291 illustrations. J J S. 5ft 2UNW2 The Wonderful World oi Ham Radio by KfcHarii Skohuk, KB4LC& This book addresses the pica thai somcthingsimple, clear, and fun he written to introduce young people to amateur...

Butternut Electronics Co

Mode* 810Q0A is a thoroughly engineered, portable, insertion type wattmeter designed to measure both FWD RFL C. W, power in Coaxial transmission lines. 81000A is comprised of a built-in line section, direct reading 3-scaie WSlflR m eter p rotected by a s h oc k-p roof Pfc plus a complete selection of plug-in mm tai ddi elements, gives the FRONT RUNNER 3 . . mm reliability, durability, flexibility and adaptability with a two year SJ Contact us for your nearest fe SBM fc 1 ll representative or...

Buy With Confidence

Michigan residents please add 4 saies tax or supply your taj( 1 D nufntier wmten purcnase orders are nccepled'rom approved government agencies and most well raled hmi at a 10 surchafge for nei io billing ajc les are subjed lo ava Eat'i ty. acceptance ard ve'ificat on Pr> ces> and specJ-> calhons art- subject lo cnange withoulf notice .u pneesare tn u. dollars Out otstocfc items will be pi -aceoon baCkOrdef automatically or eqj valenr product substituted unless CEI ift instructed...

Bwd Antenna

Continuous coverage from 1.8 - 30 MHz S.WR. - l s llian 2 1 from 2 - 28 Ml 1 (may br slightly higher hrlow 2 and above 28 MHz depending upon installation), ompijetely asstLmi)locJ. B ilurih lorrnir cd with SC.)-23< ) connector.'N' type supplied on social i> niv Power 1 KW - 2 KW PEP ICA5 Higher power models available

Cbc International

LOU FRANKLIN K6NH - Owner P O BOX 31500X. PHOENIX, AZ 85046 WIRELESS CABLE - IRS MMDS bnaleur TV Ultra HLgfi Gain 50db(+) Tunatbl 19 2.7 Gill. - 12-Channd System Cumplelii J114.95 - Call or write (SASEl tor FHEf Cata PHILLIPS-TECH mCTRQWCS P.O. Box B533 Scottjdale, A1 85252 (602) 947-7700 4 3.00 CndU all pliona < jrdflrc WARRANT* MwlarCird - Vits - COD * - Quinllty WIRELESS CABLE - IRS MMDS bnaleur TV Ultra HLgfi Gain 50db(+) Tunatbl 19 2.7 Gill. - 12-Channd System Cumplelii J114.95 - Call or...

Challenger Dxvi

A unique multiband vertical that utilizes GAP technology. The Challenger DX-VI covers all of 2m, 6m, 10m, 12m, 15m, 20m, 40m, and over 130KHz on 80m with a VSWR under 2 1 TRANSFORMERS BASE INSULATORS Launches RF from a 16' elevated GAP, not from the base of the antenna. The antenna is PRETUNED. There is nothing to adjust. The Challenger DX-VI has virtually NO earth loss and requires only 3 wires 25' long which attach to the base of the antenna. Thus, eliminating the need for an extensive ground...

Circle Oh Reader Service Card

Described in this article is a relatively simple, VFO controlled, double-sideband transmitter with 1 watt output for 10 meters. If s capable of easv jml comfortable communications. For example, while this transmitter was still bread-boarded, with its innards splayed a)I across my station operating table, i contacted K7EVL in Wenatchie, Washington, on the first call. He checked my signal, and he, my two-year-old Katie, and 1 had a merry contact. The sideband transmitter is designed tor hams who...

Circle On Header Service Card

ITU 44 at the jamboree camp area. The operation frequencies and modes are SSB 3.5 MHz-430 MHz CW 1.8 MHZ-50 MHz FM 28 MHz-1200 MHzr and packer 14 MHz-145 MHz. Scout club stations that will be involved are HL0S, HL0YP, HL0BEJ, HLGCHD, HU& EBZ, HLCEGG, HLFFD, HLBILA, and HL0JSP The conditions of issuance of a commemoration award are Class A HL call areas (HL1-HL5, and a scout Z> station) with any one of the special stations Class B Any HL call areas (HL1-HL5. and a scout s...

Circle On Reader Service

Admission 2 Tables 12 (mcEudes 1 admission). Falk-in on VE2AED 147.270 147.370. Contact Joe Ship VE2JS, 5637 Melting Ave., Cote St. Luc, Oue. H4W2C1, Canada (514) 482-6500. GARWOOD, NJ The TORA HamteSt Ftea Mar-kei, sponsored by ihe Trr-County PA. wiN be held at St Anne's School on Cedar St, from 8 AM-2 PM Donation S3, children under 12 (Wfth parent) lieg. Reservations required f r tailgating. Walk-in VE Exams Starr at 9 30 AM Bring check for S5.25 payable lo ARRL VEC'1 (except toi Novica Exam)...

Circle On Reader Service Card

24 73 Amateur Radio Today * October, 1991 Building antennas for the UHF and low microwavc bands generally requires quite a bit of metal work and some tricky adjustments to get good results. However. you can overcome some of these problems with a few relatively simple modifications to an inexpensive , commercially available TV antenna. 1 he antennal used was ihe Radio Shack U-75 UHF corner reflector antenna fRS 15-1660), which costs just 16.95, It consists of one driven element and seven...

Circle On Reader Servie Caro

Flash cards 'NOVICE thru EXTRA' thwry Kt itorts underlin-Jd Ovef ifiiJO sets in use For beginner. QMs XYLsftkids ____ McicrabKon 8FfBQ 132*150MHz Zwr .-'C , sscr Aimait aocesaohes J F Se Accessor* Group Si GEExeclfe 138-155MHz, 40mtt. > BwerUnrtOriy.S70each wttfi2 F Scan Accesaanes, yach. GEE*ec U 42- 50 WH 50wait, Draper UmlQnlv, S65 each. with acc s aoiy group t eacii, GE Century fl t, 7, or 6 F req 25 watt, ) 3M 55 148- 74 JSC each Siondord HX-MW partafa 13B -144 M H i. W each. Alt SALES...

Circle S On Reader Service Card

MicroSat Packet Communication is now easier than ever using the PacComm PSK-1 with built in TINY-2 TNC Only two cables to connect computer and radio - Revised radio interface simplifies cable assembly - Premade radio cable optionally available - 1200 bps Manchester AFSK PSK for satellite access - 400 bps telemetry 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 Doppler Shift Correction -...

Cmtelc Industries

501 Mitchell Rd, Glendale Hts JL 60139 PACKET RADIO * REPEATERS * PORTABLE READY-TOGO- Pre-assembted & pre-tuned - RUGGEDStainless steel & iightwi* DEPENDABLE - Water & corrosion-proof PROVEN DESIGN-From ARRL Handbook, highest qlty. materials and workmanship. Money back guarantee, Specify MAX146, MAX220h or MAX440

Coil

TWJST TWO EMAWfLCO Wi ES TOGETHER NELPTUL TO US DfFPEfiEST COLORS Figure 8. Base diagrams, ali bottom view. Being able to see a signal on the scope and adjust the stage in question is a big help in a sideband project where you are concerned about speech waveform. If you do not have a scope, do not despair. You can probablv adjust the transmitter a little at a time with the aid of ihe station receiver, its S-meter, and a shsjp car. I have adjusted RF stages this way, and while time-consuming, it...

Commercial Radios

Motoro la, MAXON, Standard. YaesL We serve municipalities, businesses. Civil Defense, eic. PoriabJ , mobiles, bases, repeaters. . Technical help oHered upon purchase 1 FAX) 212-925*7001 tje snipped direc royou FREE o shipping coat We Stock AEA, ARRL. AmecoH Amertuon, Antenna Specialists, Astatic. Astron. B& K. B& Wh Bencher, Bird, Bultarnut, CDE. CES, Cushcrafi, D iwa, Eimac, Henry, Heilr Hustter, Hy-Gain, (com, KLM, Kantronics, Larsen, MFJ, J.W Miller, Mirage, Nye, Palomar,...

Communications

Weekends and evenings by appointment* 280 Tiffany Avenue Jamestown, New York 14701 Western Afow Yart J ft nest nmatuar rodu desitr* PH (716)664-6345 DAM KB0XC-K RBY KAIZTS LOUIS KA 1PN PON NIKMR DENISE YL MALINIE XYL-MlKE SIM DAM KB0XC-K RBY KAIZTS LOUIS KA 1PN PON NIKMR DENISE YL MALINIE XYL-MlKE SIM

Communications Corp

Spectrum Communications introduces the new, low cost ' Specter Series S-7R basic repeater base station. This lightweight but rugged desktop unit also has a 19 rack mounting. The S-7R is available on VHF (10t 30, and 150W), midband, and UHF (10, AQt and 100W), with 100 duty cycle. High sensitivity and selectivity, crystal-controlled, and easy to service, the S-7R can be interfaced to any repeater controller via the proper jack. Numerous accessories are avaMab e, such as CW lDerT CTCSS, com*...

Ct Oj

Figure 2, Schematic of the Sudden Receiver circuit. If you're living in an area with antenna restrictions, if you're tired of hassling with huge inulii element yagis or if you're just looking for a compact rugged, easy-to-use portable antenna that really works, the 150 watt IsoLoop 10-30(MHz) HF Antenna is the Perfect Solution to your antenna problems. The IsoLoop 10-30has been redesigned to provide greater durability, lower SWR and extended frequency coverage. Bccause the loop is isolated from...

Dbsra

Sources of Parts ICS, connectors, crystal JDR Micro Devices. 2233 Branham Lane, San Jose CA 95124. Tel. (800) 538-5000. PC board, PROM, EEPROM Ron Seese N6MBR, 6136 Landino Dr., Westfake Village CA 91362. Sources of Parts ICS, connectors, crystal JDR Micro Devices. 2233 Branham Lane, San Jose CA 95124. Tel. (800) 538-5000. PC board, PROM, EEPROM Ron Seese N6MBR, 6136 Landino Dr., Westfake Village CA 91362. additional parts or the printed circuit board. Those parts are nol needed for this...

Dc

MATCHED & SELECTED TUBE & TRANSISTOR FINALS IN STOCK Tube Socket Caps avail EimacPenta 1 yf. iirn, wty. Prices availably subject to change wjihoui notice. Foreign Small Packet Air 10 oi. postal 5.50 UPS Ship.Hand. 1 lb. Cont, U.S. VlSA'NlC or prepaid 53.50 C. .D, ORDERS add 3.75 QUANTITY PRICING AVAILABLE NEXT DAY UPS DELIVERY AVAILABLE MINIMUM ORDER 52 ORDERS RECEfVED BY 1 30 PST ARE SHIPPED UPS SAME DAY EXPORT - O E M ' SERVICE * R& D - AMATEUR qpERSONLr > (800) 854-1927 < NO...

Drake

Tje snipped direc royou FREE o shipping coat IIX Towers. Antennas. Mot-le Rsdio mounts stocked Can MAIL ALL ORDERS TO BARRY ELECTRONICS CORP., 512 BROADWAY, NEW YORK CITYt NY 10012 FOUR BLOCKS NMTHOFCANALST BETWEEN SPRING AND SRO WEST I M*uj Vnrlr ritu'c LARGEST STOCKING HAM DEALER new Torn vuy 5 COMPLETE REPAIR LAB ON PREMISES

Dual Band Fm Transceiver Ft Bano

One-Year Limited Warranty on all Amateur Radio Products t 1991 Vfcesu USA 17210 Edwards Roao.Cerntos.CA 90701 SpecrticatK> oi sufcfect o change vmtnout nottce Specifications guaranteed only within amateur oands The only transceiver that could replace our best seller 108 dB, An optional Digital Signal Pro cessor, DSP-100, offers even further sound clarity by tailoring the incoming and outgoing audio passband signals. You'll find theTS-450S and TS-690S provide truly outstanding sensitivity over...

Edited By Uno A Bene Au Kaukm

Jn March 1992, a space shuttle launch is planned with the first mission in a series of 10 flights called ATLAS-1 (Atmospheric Laboratory for Applications and Science). One of the payloads SEPAC (Space Experiments with Particle Accelerators), will investigate the ionosphere ami magnetosphere. SEPAC will use an 8 kW electron beam modu- fated as a VLF transmitter by audio tones between 50 Hz and 7 kHz, Attempts will be made to receive and record this signal on earth at various locations. Since...

Euctronics

Times on tour separate bands i.e., at leas two separate calls must have besn worked). Send only log data of QSOs along with your complete address plus 36 IRCs by registered mail to the manager. Mrs. A Dimde. not 3aier than Dec 1. A New QSL routes for YL1XX. YL2DX. and YL25RF 226001, Riga PX. 10. Ostrzygallo. Republic of Latvia. Europe Please mail as above, and with* out Ihe lelttate bulge of a folded SAE 5 The Soviet QSL Bureau, Box 88 Moscow, does NOT work for Latvian hams (all YL. UQs) any...

Every Issue

The entire run of 73 from October, 1 960 through last year is available. You can have access to the treasures of 73 without several hundred pounds of bulky back issues. Our 24x 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, (no partial sets for 250 plus 5 for shipping (USA) Annual updates available...

Fantastic M Fm Transceiver

Ftawtj Braks i zr> z* o rner or Her al n fc* het dayv harrrtests. vacabons second car* and packet (1 even naatlerti iil I packetoonnacbom Sn expandable tkode-programmec cAanneis. 5W RF output. mt mdual conversion reco - J-CL EiiSY aiS b y Vr f pj, more for a eccr-jriand old ngwfian you can make yot own lor lees some fur with your own iruty AM FIICAW-MA FM rtgi Thtg KjJ Comes COm pFole except for The case, mr e an peaker lCOM or equal 4pea*ef mikes pJug nghi m Add our own beautifii case set...

Fieldpiece Instruments

Fieldpiece Instruments HB70 Series of heavy duty book type digital multimeters are easy to use, with alf the capabilities of the meter displayed on Ihe meter's face. These mum meters are built for use in the field. The more control the user wants, the more he may prefer a manual ranging meter instead of an autorangmg meter. especially if it's less confusing and easier to use. Meter prices range from 99 to SI79. Fieldpiece Instruments. 8322B Artesfa Blvd., Buena Park CA 90621. Tel. and FAX (714)...

Flat Rates

C64S4U Ct 28 555 C128D S& S 1541 & 1571 DRIVES S50 Power Supply, Heads A Motors not included. 120 Wtsf Main Suite 7 Rapid City, S D 577C2 A5D0, OX , 2000f A300Q & . Comm, PCs 60, Cpmm Printers A Monitors S45. Figure 1 S 8h Pans. Wc pay cash for used Commodore cquj jr icm (regardless nf condition ).

Fluke

F ur-Functi ri Fr& quency Couiilfli F 100 120MH mmmm 5179 ' mKUmmmf F-IOQO I SGH Sali C.he * wvtfi KighStEbi U dC-viral 14 Trusiitof* * S > ad s Nah * gi 'AT sthMl prtno TVIpiBFo rSuppry JtP-620 iril rl XP-S ' , I.vVi 3A ' ' ' ' - CflnUurt'i m Lhtf ds irgd leaturas far eipwm W Ftfalur -lion Sutern short cftsuil prar True RMS4 1 2 Dlgll Multimeter M 7000 Provides sm . cnanqH . sqjare wsVp Trum * Hj jt 1MHi AM or FM capabiiity GF-6 16 Function Generator Ith Freq. Counter Puk . Flump tC' HHi...

Fm Shown

Pick Una unit thal'i righrt lor you All units iransmil statue signal in BB 10E1 MHz FM Band up to 300' tXCOpt lor hi power FM t that gooi ujltO-Vj mjhe FM-4. long range, high pewfrr wilh vf+ ry sens--Tfa xlfO nx* pn up tO awa > S14 95 F M 3 Tiptoe unr mdudH caw t. artery, itii ar. enna, and conoertsor mi e Ejiciilani fuJp+ny 3*iVT ajabeve. DuifLjiy*- f*d and itfleti H9 95 SMC '-laiure sens .** pecar-ir ge iorfw t 4 iias 3 aoorthirtw jountfc Lota * 'un kjf Oli rtwili Ih p -Pom ei> irancB...

FNB

SOOmah SOOmah eOOmah GOOrnah 500mah eOOmah Tempo S1 Earfy Tempo S2 4 5 Late Standard BP-1 Ten-Tec BP1 San-Tec tfi42 fl44 Tabs Aide n 300 Tabs Bearcat BP-BH with 8 NiCad cells 26.00 f C'lrnp-iK-iuy faetaiy d Fis-e Tihl f.'il i iiK Ki uic Small ti hiireigln v eatr.p.rw'N Misled shar ntrs wiih siainkss fli l SyelelS H& avy M i dL.ri.-i r r-.tjL'd .uijper anletitti vv iii .ur vivr- B ffierfefl wnh 'COrtiiH io> i.v ior-f -si or-iin M& n'iced ka iiimjtsiran tie ' Inciu ct L-L'nM. maulaior...

Gettech

NY 12553 HUER BY PH0IJE OP MAA IN t 5 A ADD 5 FOR SHIPPING AMD HAhDlftG. COD Cu A GES A ft ADO IF l OH A L COMPLETELY SELF CON TAJ NED- us t add radios, power, mic, and you have a repealer. Record arty voice jnio bam cry backup Non-Volatile RAM. On board Timers rake care of ID, squelch ail, and time-out liming. Mixer lor receiver and JO'er audio Muting of receive audio during squelch tail. COR or squelch activated. All buffered I O.

Ghz

FIND FREQUENCIES FAST with any of these great pocket sized counters, available for immediate delivery from STARTED Absolutely the best values in the industry, from the 1500A, now oniy 89.,to the new 2500 & 3500. These new full range counters feature a 1 megohm input 10 Hz ig 12 MHz, a 50 ohm RF input 10 MHz to 2A GHz to 3.5 GHz for the 3500. Tr> e 2500 & 3500 both feature MMIC amptiliers for maximum sensitivity, throe gate times for maximum display resolution of .1 Hz to 12 MHz and 10...

Grv Antenna

Uv G5fl V M LTpUANQER amen-na j flu escollen II f3 -30 MU*.) iQ rnor d.uoit n 3 Mm, we arUe ina may bft 1-7 a M& i COM I * JO antenna uS d lU i lunn- .inn a yuud ar r- jifflunfl rh-H'opsi Sarn j rvanon a* a i l- foci flat top am 3 r+v & joc ahm KW lo, IU rr ans n s s lorn in (J 11 Ii V f t re .or, nee ft II If e m reu i '. ,-tr. Frjzr, B0 IfKOhqh nvfllrffi yyi n only nlkrvia hi Ii -HL --b .r. 11 api. ri nu C HS Th impM n fe priser-1 al rhu y.na ul ine 3 G inrti KW Iwmtear rf- risint -on...

Hf Ssb Receiver

R-10S1B SVN-THESIZED RE-CtlVER made tor the U S Navy covers 2-30 MHz LSE-USB-ISB-AM-CW-FSK In 100 Hz steps plus vernier adjus* 500 KHz IF 50 ohm anenia input, ano 600 ohm audio output Solid-Stale except lor two tubes 115'230 VAC 50-60 power input 7xt7x.4x18 9. 80 lbs sn wl (UPS in 2 packages). Used-checked W S75D MANUAL for FM051B partial repro S4b QRP CIRCUiT CARDS by Ryan CommunicaMons high quality 2 x4 CW boards for active low band frequencies Output anes from 0 7& -2.S v-atts as DC inpui...

High Performance Preselectorpreamp

The solution to most interference, intermod, and desense problems in repeater systems, 40 to 1000 Mhz tuned to your frequency 5 large helical resonators Very high rejection Low noise high overload resistance 8 db gain ultimate rejection > 80 db GaAs fef option (above 200 Mhz) Cast aluminum enclosure Typical rejection * N, B N C, a nd S 239 co n ne ctor op ti o n s 1.6 Mhz 220 Mhz 40db (44db G a As) 20 Mhz 800 Mhz 65db 5 Mhz 450 Mhz 50db (60dbGaAs) 20 Mhz 950 Mhz 70db

Lus

Lhc RBC-700 Repeairr Coniroller iv designed ti support Rcptatcr - utom that inquire multiple rwJk connected together ui J site. The RBO7** utilizes a true 7*7 audio matn swnch ubh tfi alkm Korrai cAnvcrutiotu between port* al the same time. In the illustration jfaive ihe mixJc) -.upponm j Repeats, 3 Duplexed Links to difFcredt sites artd .t Rem nc Bases Usinp jmple cctnmon(j , a user fcild tie (he Repeater unda RemoteAase to oiw Link, while hi. her Ljnki jre immuiuculihg ihTOu h your .iic....

Ic Test Cups

JR1811 .50 .40 DC Plug (Walkman Type JR1812 .50 .40 DC Plug (Mint) JR1813 .50 .40 DC Plug (Stand.) JR1817 .60 .50 DC Chassis Jack Mini).,. JR1818 .60 t50 DC Chassis Jack (Stand. JR1819 .90 .80 DC Chassis Jack JR1820 ,90 .80 DC Chassis Jack .1,3 mm 2.1 mm 2.5 mm 2.1 mm 2.5 mm 2.1 mm 2.5 mm .- - Contacts Spring Temper Beryllium Copper. Tin Plated Housing Glass Filled Polyester, UL.94V-0 Order Price Description_Pins

ICOM

Just fill out the Reader Service card and send it in. You'll receive free product information from our advertisers, and one lucky reader will win a great prize from ICOM. The dual bander of the future is here ICOM's IC-24AT mini-handheld gives you full operation on the 2-meter and 440 MHz bands, while offering outstanding flexibility and performance.

Inexpensive Ham Radio Equipment

Jim Brady WA40S0, 3037 Audrey Dr., Gaston la NO 28054. BNB09Q GREAT CIRCLE MAP custom plotted in four cobrs, centered on your QTH. 22 x 24, Countries identified by prefix. Plastic laminated. 35 ppd. Vector Control Systems, 1655 No Mountain Suite 104-45, Upland CA 91786. Tel. (714 985-6250, BNB900 BATTERY PACK REBUILDING SEND YOUR PACK 48HR SERVICE. ICOM E3P2 BP3 BP22 19.95, BP5 BP8 BP23 25 95 BP24 BP70 26,95, BP7 32 95. KENWOOD PB21 15.95, P821H PB6 22.95, PB25 26...

Info

IC-D2AT High Power 2m,. 409.00 2W D-2SA 2m IG-2SAT IC-3SAT 220MHz HT TTP 449.00 299 5 IC-4SAT 440MHz HT TTP 449,00 299 IC-2GAT 2m HT TTP 429.00 319s5 JC 4GAT IC-12GAT D-W2A 2m 440 HT 629,00 529 IC-701 Xc v r p s tu ne r scope - Sp cia 614p0 5099 Handhelds for Aircraft bar Regular SALE A-2 5W PEP synth aircraft HI 525.00 4799i A-20 aircraft HT w VOR Closeout 625.00 499s5 A-21 Navicom Plus Aircraft HT 660.0 0 59995 Call for information anil Prices on * accessories for Handhelds listed above. VHF...

Yar

Figure 4. vfijr amplifier and switching board, found that separating these stages greatly increases interstage isolation. Grounding is enhanced and a greater overall stability can be achieved. J recommend that you build the transmitter in stages and get each stage running properly before you proceed to the next. Some hints for construction of the various modules are as follows The VFO is the sing e most important part of the transmitter. If care is not taken to observe basic construction rules,...

Jgar Pistol Jgab Hillbilly

Fr iuflncv flanqp 2g 000-29 & oo Gftirti A 75 DB Mufrppl-tittion Factors 2000 cw. 4000 pep Hi-ight to fp i W-ijhf 8.0 Lbs. M um I rti ' (ti Tubing par, ,, rp- 1 Coi* I T.lt> li f(H Monik.up 2b 000 5DO-. Gain HoriiOftttl - 5 25 OH Vertical - J 75 DB MuHipheaMin Faciori Hon atilftl 1 7 VertiCflf 15 Tim('j Hnrj it) Stliflratinn Fr iuflncv flanqp 2g 000-29 & oo Gftirti A 75 DB Mufrppl-tittion Factors 2000 cw. 4000 pep Hi-ight to fp i W-ijhf 8.0 Lbs. M um I rti ' (ti Tubing par, ,, rp- 1...

Kaku

The Whole BLT Crew WDSBDX, WB5BGG, KA3BKU, KC5CP, WDSD2C, WB8ELK, N5EM, WB5HJV, WB5HLZ, N5JXG, WD5JRD, N5LCO, WA5LHM, N5LKJ, N5MPN, WA5PCD, N5QMG, N5RPQ, N5SUA, W85TTS, WA5TWT, W85UUK, WA5WOD, WA5ZIB, A, Ale*y< J. Edinburgh. J. Johnson, J, McK- elvy, J, Mock, S, Ross, C, Summerville, Civil Air Patroi, Brazos Valley ARC and

Kenwood Electronics Canada

BOX 1075, 959 Gana Court Mississauga. Ontario.Canada L4T 4C2 Si wcltlnMlons and features ara subjoct o change without notice or obligation* Compkife serves manuQlsar ava bi tor all Kenwood transceiver ana mosr ac e & ones, The new TS-950SD is the first Amateur Radio transceiver to utilize Digital Signal Processing (DSP), a high voltage final amplifier, dual fluorescent tube digital display and digital meter with a peak-hold function * Dual Frequency Receive Function. TheTS-95GSD can...

Kenwood Performance Plus

PB-25 26S 8.4V 900mah 65.00 PB-112V 1200mah Manufacturer irj the U.S.A. with rrsiilched cells, th.ese Sui> r feature on circuit protf ciioh and Overcharge protection, and a 12 month warranty. All inserts in stock or availabte from authorized deaiflrs. CALL US TO DISCUSS YOUR BATTFRY RFC1UIRFMEWTS. Add S4. 0 Shipping & Hiindiinq. Connecticut aidants add 3 taK. 149 Palrnei Road, Scmrhbuii y CT 06433 In Connecticut 20gg6W9B5 i-AX 203 62*6 43

Kenwoods THA Dual Band

DominguezSt. Long Beach CA 90810. Tel, (213) 639-4200. FAX (213) 604-4487, Price Class 600. To paraphrase an old song. Jook what they've done to my walkieT Mah, Wowt this new Kenwood dual-bander is a true tech* meat marvel. Sltghtly bigger than the singleband TH-25AT, the new rig packs 2 meters and 440 in one handy package, OK, that's not big news anymore. But this rig has more features than I ever imagined could exist in one radio, That characteristic is both its...

L

AHT5B JU W AN 762 1IDW J H.35 AN7T& L 20W f IJ. fl AN77& H JflW t 93.1V AR311 3Q0W 1103 CO fHti UOWUV S ES27A 30 W < 139.30 EB1 * tnuw tui.is AR Q5 JWW K3-S1 NEW I r IK WA TT 3 - SO M M AffplHlir A TVS D-150 (C.AS-FETI I 49 ffit MO Wall PEP -P t 1 69 fl AT Vi FQ2-BI C-AS -FETI I fl. i Kit IflQ WaLt PEP 3 Port i T9 fl 1396 W*U PEP i-Port 1 9.95

Lithuania

Box 71 Siauhai 235400 Lithuama There were TO special event stations operating during the 4th World Lithuanian Sports Festival from July 27 to August 15 1991 The stations operated all Dands and ail modes using special cafisigrrs of LY91 , For those wishing io receive a commemorative pennant in Europe you must contaci at least ihree special event stations, and North Amenca and other areas must make contact with at least 2 special event stations. Send your log...

Mfjb

The MFJ-901B 55 our smallest n-5x2x6 inches - (and most affordable) 200 watt PEP tuner - when both your space and your budget is limited. Good for matching solid state rigs to linears MFJ-941E The ww MFJ-941E gives you a 300 t- Mcwatt PEP tuner that covers everything * from l 8 30 MHz - pfus you get a crossmeedfe meter, antenna switch and balun , . for an incredible 109.95. Lamp uses 12 VDC or 110 VAC with MFJ-1312, 12.95, Antenna switch selects 2 coax lines (direct or through tuner), random...

Mfjc

Don't leave home without this mobile tuner Have an uninterrupted trip as the MFJ-945C extends your antenna bandwidth so you don't have to stop go outside and adjust your mobile whip Small 8x2x6 inches uses little room. SWR Wattmeter and convenient placement of controls makes tuning easy in motion Balun. Covers 1.6-30 MHz. 300 watts PEP Mobile Mount. MFJ-20, 3.00. MFJ-962C h MfJ ZC Eets V u ** V ur barefoot ng now and have the amplifier later, ti covers 1.8-30 MHz. You get MFJ's peak and average...

Microwave Transverters

SHF SYSTEMS Noime bnear rara ftefs wc trmjv& nef krts kx 902 269 1296 2304 2400, 3456 MH M u* 2m Li.fltS.& V XrtJ induce mmer imJ LO P.C. hearts iter and aft components -umis include I F D C. swiTciiboaid. connictofs and cor pact Jo*, profile housing Otter frequency options in amateur tand avBiiable SHF 9G0K 902 306 MHz StimW Kit Si39 Burt S26S SHF12I0K 1J96-1300 MHi tOmW KJtil49 GutttH SHF1269K 12 6 M 2 72 Oscar Mode L IflmW KitJT40 Butt 255 SHF2M4K 230J- 30a MHj IQmW Kil 205 0uill S325...

Money Back Guarantee

TO ORDER SEND 78 ( 75 + S3 shipping). Lftdud disk iued Call Jn-d phone N Y. State include 7.5 Tu Frank Greenhalgh, KD2LL 10 Robbins Ave, Amityville New York, 11701 (516) 598-0011 circle 133 on reader seftv> cecabt> PC GOES EFAX3 C pmfessond te reception syi ieiT- f the IBM PC It includes an AM FM demodulate software, cassette tutorial and 325 page marsauJ Checfc -si of our advanced features PC GOES EFAX3 C pmfessond te reception syi ieiT- f the IBM PC It includes an AM FM demodulate...

Moul Rd Hilton Ny

Phone 716-392-9430 - FAX 716-392-9420 UahftthWMM T5 jitlfmnJ TJuI Hrtirrir ih In. IiuMh iStitjWiil The repeater controller has a fixed ID interval of seven minutes, and the repeater will ID only when nobody is talking unless the time-out timer ID is disabled. When disabled, the repeater will ID whenever the interval timer reaches zero (while users are talking). To save valuable memory and eliminate extra transmissions by the repeater controller, I did not program the controller to do an end ID...

My Gap Challenger Dxvi

Lew McCoy, WltCP CQ Technical Editor (March 90 Review) *could actually hear signals that were in the noise on the beam, In my comparisons befiueen the base-Jed vertical and the GAP, the GAP consistently outperformed the base-Jed qntenna. Most of my reports were approximately one s-unit better with the GAP One other surprise was that the GAP vertical was quieter < 7ess noise) than the two base-fed verticals. would rate the GAP as a quality productw but even more important a good performer...

New

Up to 8 EPflOM programmed messages Adjustable audio, speed & interval timer ID over voice inhibit Low power option Moduiar design Message selection via binary input TTL levels The ID-2B provides required station identification without troublesome diode programming. The ID over voice inhibit circuitry allows for courteous operation by not allowing an ID until the next squeicb closing, ID-2B Wired Tested 99.95 ID-2B LP Low Power 109.95 i

No Compromise

Don't happen by chance call us for a free catalog, S review In Oct 73,19M 'Sept 1986 Warch 73, i9BG JjgT CO, Dec, 1363 Mar. W.R. & 1 Pf Ii 137 Manchester Drive Jl p h FlorissanteoJorado8081G Xj Z (719) 637-0650 GUSS 500r000 HAMS plus UOOO's Qi Pi bfic Domain Amateur Radio Programs and a a 3& .00 DD S& . f S3 99.00 499 C Rt. 3,00* 56 - Min*rRlH Vrrgtnia 311 r 703 094-5777 - 800 282-5028

No Tuner Needed

Here is the next generation Repeater up io 9 bands. Yes, one antenna with only one coax feedfine can handle all G HF bands, i.e 160-30-40-30-20-17-15-12-10M. That's fight. If you install our antennas correctly, you will NOT NEED A TUNER Numerous customers ha s confirmed rhis fact. The secret is in our special balun. It matches the low-jtnpedance coax cable to the high-impedance windcm-type antenna. All our antennas are available for use with 500W PEP or 2KW PEP power. Read what our satisfied...

Nov

CHARLOTTE, NC The new Amateur Radio Education Center at the Discovery Place science museum will celebrate its opening by operating from noon (Eastern Time Nov. 2-noon Nov 3 The Mecklenburg ARS will operate the station as W4BFB, primarily on phone in the bottom 50 kHi of the General phone subband& on 75, 40 and 20 meters and around 28,400 kHz, For QSL and Cer-lificate, send QSL card and 9x12 SA with 2 units of first class postage io Ralph Eubanks, 6021 Coatbridge Laner Charlotte NC 28212, USA

Now You Can Use That Ohm Hard Line

Yes. that LOW LOSS semi-rigid, 1 2 Inch, co-axlaL cable, used by the cable TV companies can now be easily used for feeding VHF and UHF antennae. Thwe HIGH QUALITY, LOW COST connectors and Linear Matching Transformers are especially designed lor easy mectlon to the ALUMINUM ahellded cxhu that can be obtained (sofnetimes for the asking from the local cable company, Male HLG-75-UHF-M ( PL-259 type ) S 5.05 ea Female HLC-75-UHF-F (SO-238 type) 1ea. 144-146 Mhz LMT-1 -75-52-UHF 24.95 ea. 222-225 Mhz...

Oa Te Times Display Hold

BP-15 Hi Cads for 1500A (installed) f ACM 5 1 to VAC adp chgr for 1500A ACCESSORIES for *Jt mod TA*SW Telescoping BNC antenna RO-SOO 800 MHZ Rubber Dock-BNC CC-90 Black vinyl zipper carry case DC-G K) 12V DC Auto adaptor charger LP-22 Probe, Low Pass Audio 22.00 use wilh 2500 & 3500, Attenuates RF noise. P-110 Probe, freq counter of 39.00 scope use, IX. 10X+ ZOO MHZ acope use,

OCT

GRAYt TN Tiie 1 Hh annual Tri-Cities Hamfest, uo-sponsored by the King port, Bristcl. and Johnson City Radio Clubs, wiil be neld at the Appalachian Fair Grounds located on l-i& i- Rv hookups Admission 5. Mail inquiries to PO Box 3682 CRSr Johnson City TN 37602. AUGUSTA, GA The ARC of Augusta GA will sponsor the Augusta Manifest Computer fair at the Augusta-Richmond County Civic Center Irom 9 30 AM-5 PM Advance t-ckets 4, 5 al the gate Kids 12 and under free. Dealer tables Si0 each plus...

Only Foot Long Overall

F C'lrnp-iK-iuy faetaiy d Fis-e Tihl f.'il i iiK Ki uic Small ti hiireigln v eatr.p.rw'N Misled shar ntrs wiih siainkss fli l SyelelS H& avy M i dL.ri.-i r r-.tjL'd .uijper anletitti vv iii .ur vivr- B ffierfefl wnh 'COrtiiH io> i.v ior-f -si or-iin M& n'iced ka iiimjtsiran tie ' Inciu ct L-L'nM. maulaior ViKh sn r> v-t lyr TuiMer IhcIvhJli i jsr& m nioloeil mj lfl ioiuud oJ iop qually aIer a w.1 n iM r Jieltic nc qus ttJes a-id frxtell i wetilhi' r try * CQrriLilEHJ mi,lJjliahor...

Output A It

Kitchen table and cleared away after L e, Components have never been cheaper compare the price of electronic pans 30 years ago and now, and then compare average incomes. It is cheaper, easier and more convenient to build electronic equipment than ever before. I suspect that motivation, rather than means, is why more of it is not done. There may not be the surplus items we used to find, but there is another kind of surplus these days. It is what I call the ' scraps from the rich man's table '...

Packet Radio

C ninodore Ct4, packal raco .terrj e Use 1 famot* GermanDighcomsun*.ir* Features EXaR IC efiip M1 to* reliable upe ral i on runs HF or VHF tones Induces FREE disk software PC ti hu *H necessary parts and lull Oocunt nia-Li n. Make nar recover corne ALi' 1 SmaJi ea.Vp mstaHacan tn- Hh-0 td.'ivd rnpul lor peak performance Excellent gajn and ntxv figure gua ant u io impiovu reception1 3pLhci y hind PR-10, 220 MHJ-20. 440 MHz PR-40 Eschkil fit

Pay Tv And Satellite Descrambung All New Edition

Our best yel The very latest in duscrambling circuits, bypasses, urn-ons lor cable, wireless and satellite. Only 14.95. Oiher pay TV adiiions, Vol i Basics of Ail Systems) M 95 198& Edition 314.95. Build Satellite Systems Under 600. Si2.95 Wireless Cable Handbook, S9-95, Any 3 S29.95 or 5 44.95, Scrambling News Monthly has all info on new Plalrt Vanilla du scram brers wiifch emulate B-Mac, VCII + , Orion. l9.9 Jyr. New catalog Si. Special this month Everything including video and...

Pb Switch

Rndinl 7 Pin l um hier Mechar im -Silver Pistetf Gonial & terminate Brfzss -i c le ng & Cylinder, Ch pate 25DVac SmaJI Unit Body Length - 0.27 (6 rr.rn) S horte' Rndinl 7 Pin l um hier Mechar im -Silver Pistetf Gonial & terminate Brfzss -i c le ng & Cylinder, Ch pate 25DVac SmaJI Unit Body Length - 0.27 (6 rr.rn) S horte' Contact Rating 1A 125Vac Mounting Hole 9 32 (7 mm) Contact Rating 1A 125Vac Mounting Hole 9 32 (7 mm)

Pc Hf Facsimile S

PC hf Facs -1 5c be complete s oftw * f k fa system for ttie IBM PC. It inckxtes art FSK Oefrxxitiatof. Software 250 Dags manual and tutorial cassette Can or wMe 'or 3 comp catalog c* products 615 S El Camino Reai, San Clement . CA 92672 Te I (714)498-57S* Fax (714)498-0566

Pennsylvania

Authorised factory sales and service. KENWOOD, ICOM, YAESU, featuring AMERITRON, B& Wr MFJ, HYGAIN, KLM, CUSHCRAFT. HUSTLER, KANTRQN-ICS, AEA, VIBROPLEX, HEIL. CALLBOOK, ARRL Publications, and much more. HAMTflONICS, JNC.t 4033 Brownsville Roadk Trevose PA 19047. (215) 357-1400. FAX (215) 355-8958. Sales Order 1 800-426-2820, Circle Reader Service 298for more information, DEALERS Your company name c i message cart contain up lo SO wends for as Utile as 42D yearly (prepaid , or 210 tor gii...

Pin Auoic In

Function, you can let your users know the on off status of the function. For example, you could use output to turn the PL on and off. If you don't like courtesy beeps, you can simply program the courtesy beep delay to zero, and it won't sound during non-link operation The link monitor input puts the repeater controller in the link mode via local or external control The repeater controller and hardware in this articlc is optimized for a repeater with a single link, You can add multiple links,...

Pl

Figure 4 (a) Prepare the coax for the half hy3ve reference antenna, lb) Attach the sieeve ami the RF choke sections of tubing as shown. and center conductor as short as possible and equal in length. At the other end of the RG-8M, udti either a BNC or a Pi 259 VHP connector, in either ease, purchase a connector for RG-59 cable as it has the same basic dimensions as the RG-HM coax, A PL-259 with RG-59 reducer is the easiest connector to install. If you use a BNC connector, you will have to trim...

Plus

DEFEATA6LE StDETONE with CODE PRACTICE OSCILLATOR POSITION and more FULL FUNCTION IAMBIC KEYER ADJUSTABLE SPEED and WEJGKT CONTROLS BATTERY or DC POWERED 503*9S TUNE SWITCH CMOS LOGIC WITH RFl PROTECTION OPTO ISOLATED OUTPUT SELF COMPLETING DOTS and DASHES BUILT IN SIDETONECODE PRACTICE OSCILLATOR B ATTE R V or DC POWERE D > J .w OPTOJSOL ATEO OUTPUT ADJUSTABLE SPEED *5-24WPM) Cfiil OPTO IAMBIC DELUXE io* ,35 same AS OUR OPTO FAMGlC

Q

24 turns, T-50-6 toroid 13 turns, T-37-6 B turns, T-50-6 toriod Primary 33 turns sec. 3 turns over drain end, T-50-2 toroid Primary 18 bifilar turns sec 3 turns over center of primary, T-37-6 toroid Primary 20 turns sec, 3 turns over trimmer end, T-37-6 toroid 10 trifilar turns, FT-37-43 toroid 10 bififar turns, FT-37-43 toroid 1N914 or other smalt signal diode Schottky diode preferabEe, but 1M914 OK 6V, 400 m W zener diode

Qrp Transmitters Ham Receivers

Join l ha fun on OPPi TboUiands a I these mini-rigs > een SOJ0 and ton a of U> t om cls nave i en mjoo imagine working Eastern Europe wllti a 30 irarumit-1er that's ham radio al I - best These CW rigs ai* idenl males to Ihe receiver al right They have two-position variable oryslnl conrnil ojiu papular QRP XTAi, inclijit edi. one watt output and buih n antenna switch Runa on i Vt> C Add our mate hing case and knob set tof a handsome ftmshea looh iSpeciVb QRP-20 30 40 or B01. ct ng case A...

Quement Electronics

We Carry A Full Line Of Popular And Hard To Find iCOM Products IC-2 2 9 A , . . 396 Compact 2M Mobile Mobile Transceiver 929 220 Mhz band unit 309 440 Mhz band unit 328 Hi Power 2m band unit 328 All mode 2m 70cm base 2699 Receiver unit 389 Compact 2m 70cm mobile unit 579

R

60 pF button type trimmer 10 pF or similar NPO or air variable trimmer 100 pF NPO 20 pF NPO 35 pF air variable, panel mounted 200 pF NPO 10 pF trimmer, ceramic OK 470 pF 15 pF 4,7 pF 10.7 pF 200 pF 4.7 ohms 10 ohms 39 ohms 47 ohms 100 ohms 150 ohms 470 ohms 1000 ohms 1000 ohms, 1 2 watt 1500 ohms 2200 ohms 3300 ohms 4700 ohms 22k ohms 100k ohms

Radio

If you were one of the smart ones, your subscription to Radio Fun began with the premier summer issue. If you waited, you7re too lale. The premier issue sold out in three weeks. Radio Fun is packed full of information to help you get more fun out of amateur radio. Basic how-to** articles will get you up and running on packet, ATV, RTTY, DXing, and ihe dozens of other activities that make amateur radio such a great hobby. You'll gel equipment reviews geared toward the newcomer, letting you know...

Repeater

A premium repe3ier with autopatch and many versatile dtmf control features at less than many charge for a bare-bones repeaterI We don't skimp on rt modules, either Check the features on Ft 144 Receiver, for instance GaAs FET front-end, heNcal resonators, sharp crystal fibers, hysteresis squelch. - Available forth 2M. 220MHj. 440MHz. 902MHzbandy. FCC type accepted ivftf and uht commercial bands). Rugged exciter and PA, designed for continuous duly - Power output 15-18W (25W opi on) on 2M or...

Republic Of Korea

Byong-joo Cho HL5AP P O Box 4 Haeundae Pusan, 612-600 Republic of Korea Cele& rating ihe 17th Weld Jam* boree. the Korean Boy Scout League will be operating a special amateur radio station with hetp from the Korean Amaieur Radio League The special cafisigns will be 6K17WJ and 6K91WJ. The operation location will be KDN- P.O. Box 502 Ft, Laud*rdale, FL 33302 Ca Sonny (305) 523-6369 M - .il---KOITDM LIN MAXcw wnnx

Requires Only Logic Line For Control

S-COM CABLE . . . 9.95 LINK COMM PO BOX 1071 - aOZEMAN, MT 59771 (406) 507-4O& S ATTENTION REPEATER OWNERS DELTATONE 2.0 The Ultimate 16-Digit DTMF Repeater Programmer DELTATONE 2.0. Ihe perrecl com'pJemeni to youf repeated controller mvosmienr DLL I ATONE and your MS-DOS computer offer unlimited 16-diyM gencratioi lor ocfjl or remote programm-ng of your repealer cor rroller D i TAlOMF proyra mmmg commands from a e created usirg your favor-to ' ofd processor Commands and ornrnems can be...

Rf Parts

1320 Grand Avenue San Marcos, CA 92069 JoeMoetLPE.KeOV P O Box 2508 Futlerrort CA 92633 At last, you won your dubs compel itive ROF contest (foxhunt or T* hunt). Now it's your turn to hide the transmitter. You've driven for hours to pick the perfect hard-to-find spot, but now you need some distinctive audio to transmit, and a way lo ID the hidden T. You could stay with your rig and talk throughout ihe hunt. But that's hard on your Ihroat and gets boring after a while Besides, if hunters spot...

S

Nev low co(I mifiovn.ivc Doppler radar kit doch. cars, planes, boals. borses injfi-. any Ifljfie mowing'Oij-jeci Operaiei hi 2 6 GHz with up to l f* fruk range LEO digilal readout diiplJ-- . spt-rid Ml milei fier hi HP rnelftrs > hcrnr c heet per conti Ea rp i f.-j-ty.r a11 to* ing to actual dopcKr ihin u 1-ib cot lee cans irv AflTfma nH .niJuot-jj Ad ruii Oft l tf C Easy to j m C'rih* n itufy PC ciro < 1 j j-iti ,( -> A.SS piast C cas with sjWdy graph tor proteso alto* ArtKyuH andli -D...

S Osha

We Ship Worldwide Order Desk Open 7 Days Week NopniHiitg. m < Muni Ne kirrt* t ram VST Ln N Tub* oft 60 cw, 40h 20, il. 12 A 10. TM U V- tune n 40, 20 & 10. Work ch- r baoJj w turwr. DX St Cuti m w frt ueivy ftiidy lo Uve Nvmv M Kiftfc-Pi v.f Ko Irjpi or Rcjuun liw I u J< s Cu i Wm 1 Wx-St if* I ntult rr -J to J Q V 100 il RG- fot f t JJi ni l Ltf Soi Rjk J 500 Ws m

S S

Schematic for the low-pass antenna tuner. tap of the inductor, it is possible to change the circuit from a T- to an L-circuit with a choice of inductive or capac iii ve input, This lets you use the tuner with low or high impedance end-fed antennas, including random wires. This feature, impossible to achicvc with the standard T-circuit, is handy for Field Day, and could be invaluable in emergency operation with a makeshift antenna, A shielded metal box or an enclosure made of printed...

Satellite Monthly Audio Codes

(900) HOT-SHOT intended for testing only. 3.50 per call BNB976 A ZD EN SERVICE by former factory technician. NiCds S36 95 plus shipping. Southern Technologies Amateur Radio, Inc., 10715 SW 190 St 9, Miami FL 33157. (305) 2383327. BNB979 COMMODORE 64 REPAIR Fast turn around. Southern Technologies Amateur Radio, 10715 SW 190th Street 09. Miami FL 33157. (305) 238-3327. BNB982 ITS BACK AND BIGGER THAN EVER THE HW-fi HANDBOOK. Modifications for the Heath HW series of GHF rigs. A must for every OR...

Scope Probes

P-1 65mhz< ik, 10* 15.95 P 2 100MHZ, ix, t0* 26.95 . 5 basic accy. ( tflrtiioi fj Cl e - --nr . EigrDi p UaiAiPH Coihs 1uH-a H lpi 200bi Fl D - M Mtiltlm t f wtth Copocttonc A IronutlcK Raa& 3 Vote. Cmtrn Cdflflnr. fopfltiprs, Transstw CHmffri 1 wish iiLi-H Sold fing Station Tempertlurt C nt'Oiled TESTiOUIPM tfT AlMulclsA ilablE Wlcf Kali *

Shortwave Receiver

Kpup an ear on the local repeal tfr gan . moipiior tne cops. L'hech oul Ihe wealher or J fet pFnln Msrer around. These aenstt e superhoi reoeivaraanejuvl theiicket. Thevtone any 5 mh portion ol the aJid and have smooth varacior tuning, dual conversi n Iih JNir.Lrnir. IT fillers, AFC. ad-ju liaOl squalch and plenty ol pettier volume Puns on 9V battery and perfprttiancu that rtvaJs the big rigt For a compile linishe- pm look add o.jt matching ca e and knob sei wim screened jrapincs FM...

Speaker

Figure L Block diagram of a basic repeater system using the repeater controller. 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...

Special Features

* SQUD STATE ELECTRONICALLY REGULATED * FOLD-BACK CURRENT LIMITING Protects Power SuppEy from excessive current 8. continuous shorted output * CROWBAR OVER VOLTAGE PROTECTION on all Models except RS-3A, RS-4A, RS-5A, HS-4L, RS-& L * MAINTAIN REGULATION LOW RIPPLE at low fine input Voltage * HEAVY DUTY HEAT SINK - CHASSIS MOUNT FUSE * THREE CONDUCTOR POWER CORD exccpt for RS-3A * ONE YEAR WARRANTY MADE IN U.SA