Rdc

> n m iBprtgs O - - L- o J A urtrt V.jut-u Hv r-Li.r A cc tie AN L T 0yer'Srt> 34 Harr ibsin . Si Stock aD ricet Eish FOB JVesi nf IWDre ft HAM ACS Looping lot Same-11 n n riDI . t tidV Can or wme floss DiSTflieuriHG COI F> ANY 7U ii. Slatt SirMt, Pre-iit n. Id. E32C3 - Ti li p.ncirH> S52 -3S2Q H& ur Tug .-Frl. - Mondays ClQSMl Sat. & Surt._

Helical Filtered Preamps For Outofband Intermod

Model 146 covers the entire 2 meter band * RF swrtched 20dB Gain * 75dB Noise Figure Model 1460S hasaSdB bandpass oM-3MHz Model 160 covers 149-174MHZ * 10MHz bandpass Model 440 covers 420-450MHz - 10MHz bandpass 17d gam - ,75dB Noise Figure * Handfes 100 Watts transmitted power All models also come in the CP version coax powered 12V DC All models are factory tuned per customer request. AJI non-coa* powered models are powered with external 13-20VDC and are voltage regulated for stability Models...

Amp Multipliers

Used, gov't surplus transmitter FM power amp pEug ins with the additron of your power supply, make tor low-cost P*A Requires +750 V, 200-350 V screen, 6.3 V fil Controls far Grid and Plate tune and Output AM-1180, 50-100 MHz 4x150A tube 65.00 AM-912,100-225 MHz 4x150Alube 59.50 AM-915, 225-400 MHz 4x150A, 4x15QG 65.00 AM-117 , 4 -6 MHz 4x15 A 4x15QG .,. 75.00 AM-2537, 790-915 & 840-925 MHz 2 587G 95.00 COLLINS 410-193-60 SPOT 1 KW RELAY With auxit-iary contact and 23 VDC fcolL T style with...

Atv Converters Hf Linear Amplifiers

DISCOVER THE WORLD OF f T 5tAU A TELEVltlOh Ca wimt* LU. H F Am,br> .r. C,.(nM AhT3t 300W tlbD.ro t fil MOW I BJ *M76I 1UW 1 55 EB2TA 300W 113 . iN7Ttl20WlB .ro tfllOJ 6 0W 144*. IS AN7TOH 3DW 1 U.lt ARJaS 30 W IB3S2 AFfJl* 3Q0YV 1*03 00 Modil 0Q Htit Sin ft S*13.t.t t 11 0ft CHJ. a Copp+f T F Bif ri t*bi 11 o Wt *llO llfllli H ird - - find parti CHPP CAPS-Kimei ATC METAtCLAO M1CA CAPS-Uihka Stnv HF POWtft TRANSISTORS IM iNI-CIRCUIT MIXERS SBL - 1 Jf 110 - TOCOMil I J 9 VKHW- 3ft 4B Rf ChtfkM...

CM

Able scan rate 'Monitor mode d t ats PTT'Lock mode allows T. tones to TO through remola 'Auto mod* & spin select '9 Scan memone* store Moda, splits, VFO A & B 'Talking Meters Voltmeter * Voice & CW B vxOt *Vo< c Rotor control* User selectable courtesy beep de pffiVB in j co trg eo M m U5- i tc Cft4 fitec z' c ft Modt DC PS rr jiei .I pJicrt with TfllAplwrrt dtyipiiii o hybrid, nun s gam twit Piugp imo'CSfrlS board. TtCM StSft.flS AutObOOl EPHDM tart < -Midi(urt Audk) Amp- u by...

Same Outstanding Features

* Schematic included UL Approved * A MUST fijrail Commodore owners * Plugs Directly ntoAiiyC64 Commodore Unif 4 3 AM11 Unit Used For Add-Ons. Peripherals Multiple Drives, ox Psckel Radio. 'This Win Be rns Lest C64 P& wer Supply You Will Ever Purchase* Over of C& J Failures VYere One lo Power Supply Malfuncljons* Ths C12S VerSion Power Supply CkIs S45.50.Plu5 UPS) Call for viiur n w FftEE 35 pagL- catalog or spaettlly terns ftr A-mnga. Cbm-mOdQffl and IQM Tth calektg L_iin aiflH km cosl...

See The Space Shuttle Video

Many ATV repeaters and individuals are retransmitting Space Shuttle Video & Audio from their TVROTs tuned to Satcom F2-R transponder 13. If it is being done in your area on 70 CM, all you need is one of our TVG-4G ATV 420-450 MHz downconveters, add any TV set to eh 3 and 70 CM antenna. Others may be retransmitting weather radar during significant storms, Once you get bitten by the ATV bug - and you will after seeing your first picture - show your shack with the TX70-1A companion ATV...

Sweden

Photo B The special QSL card ot 8yong Joo Cho HL30AP HL5AP commemorating 30 years of amateur radio operation Clockwise, beginning at the cailsign. the photos show 1961. 19701 1975, and 1990 meeting there were many guests, including Mr Rankm 9V1RH VK3QV, chairman of IARU Region 3 Mr Hara JAtAlNf, president of the JARL Mr. Song HL. 1CG cn behalf oi the KARL president, and Mr. Uchibori JA1IRT, editor of CO Ham Radio (Japan). I attended as a guest of the KARL as an elder statesman (charter member)....

Synthesized Signal Generator

Finally kow-coe Lac qualify signei generator a true itfemalive 10 tne 57 000 Th 10 a ha d wort g. bU easy to id* generate vjpaJ ior the ljo as** as for production lest Lease 4 tor less than 3 00 a day Features *100 kK to999 MHz -lOOHj resohJ J to 500 UHz, 200 Hzabove * 1301b -10 Bn Output f*iqe -0 1 ojiput restfutxtf AW and FV moduli Oft progr.i -r flr r nAtoin Output selects- m - dBm wnh Instant conwsJon beiween units -RF ouipm revere) power protected > L 0 display ol aM j> nr a meters hlj...

Vqo

Call for information and Prices on accessories for Handhelds VHF UHF Mobile Transceivers Regular SALE IC-229A 25* 2m FM TTPmic (5** 449.00 319 1C-229H 50w 2m FM tip mn .,fS J79 00 379 IC-448A 25w 440 FM TTP (fitee 599.00 469 fC-L20I m 1.2GHz FM xcur 799 00 699 i f i F Regular SAL IC-322DA 25w 2m 440 FM TTP mic 659,00 56995 IC-3220H 45w 2m 35w 440 FM TTP 699.00 599* IC-2400A 2m -440 FM TTP (SpeM) 899.00639 JC-2500A 35w 440 1.2GHz FM (Spec 999.00 849 ft-7000 25MHi-2GHz receiver 1199 00 1029 RC-12...

The Baby M B At A Dimunitive Price

* Stf ed to litis Her cars A smaltfli Priority C hanral w scan budgets Wideband any 25 MHz ( I M-174 mi) Us& for police, lin, MAFIS, CAP, -FCC lype accepted far commerce Shipped wilh UP DOWN mike, mobile Fully field programmable mount and powsr taWa *Ruas ttia renwwd M*S DTWF mite avaiiaifc Wfctetand aniemts, power supply and after aocraaateflvatebto at reasonable pwes Dealer Inquiiies Encouraged

Satellite Monthly Audio Codes

(9001 HOT SHOT fntendeo Mr testing onfy. S3 50 per cail 8NB976 BLIND, DISABLED would like friends who will donate a new or used shortwave radio. I like to listen to the world I'm* shut-in. Ptease wn e Richard Jas row, 909 Wes 6th St., Hollywood CA 90036, or phone (213) 93ft-5341, BNB978 AZDEN SERVICE by former factory technician NCds 536 95 plus shipping. Souih& rn Technologies Amateur Radio. Inc 10715 SW 190 St Miami FL 33157 f3Q5J 2385327 BNB979 OJGITAL AUTOMATIC DISPLAYS Kenwood, Yaesu...

Model

ICS Intermittent Communication Service (50 Duty Cycle Smin on 5 min. off) Useful ham calculations you can program yourself With luck, you have the first part of your ham computer system up and running (if not, see Part I in the May 1991 issuel In fact, you may well have new wire antennas all over the yard ihat you have designed with your computer, Now it's time to add a little more to the system. This month the MAIN MENU will grow to five choices. These w ill be added to the first two in P irti...

Mfj D

Action not a spongy unsure feeling like some others have. You get MFJ's famous one fulf year unconditional guarantee That means we will repair or replace your MFJ-949D or other MFJ tuner (at our option) no matter what happens to it for a full year. Others give you a 90 day limited warranty. But what do you do after 90 days if it burns up Or before 90 days if they say. Sorry, your limited warranty does not cover that Why take chances when MFJ gives you the world's leading tuner with no matter...

Bnb

HOME-BREW PROJECTS fists for S.A.S.E. Kenneth Hand. P.O Bo* 708, East Hampton MY 11937 BN6264 TRANSISTORS RF FOR SALE Looking tor repair shops, manufaciurers and wafers MRF454. MRF455 series TOSHIBA 2SC2290. SSC2S79. and more Calf 800) 642-14*9 BNB265 COMPLETE MF STATION FOR SALE Kenwood TS-940 AT. SP-94Q, MC-60A, HS-5 phones, PC-iA. LF-30A, YK-B8-C SW-2000, IF. 1CB. IF-232C, Heil Boomset Alliance HD-73 Ameritroo AL-80A, ATR 15 tuner Hy-Ga.n Explorer-14 beam wtfa 30 40M option, PLUS all cabling...

S

AP-3 AUTOPATCH Use with above for repeater autopatch. Reverse patch & phone ne corrtral are 79 AP-2 SIMPLEX AUTOPATCH Ttming Beard kit Use with abevs 1er simplex pe-ation using a transceiver 39 MO-2D2 FSK DATA MODULATOR Nil Run up to 1200 baud digital signals through any fm transmitter wtlh lull handshakes. Radio link computers, telemetry ge jr. etc a S39 DE-202 FSK DEMODULATOR kit for receive end of link 39 9600 BAUD DJGiTAL RF LINKS. Low-cost packet networkifig system, consisting ol new...

Info

* Advanced Electron Application5 + Ac vested Electrons Applications 194 All Electronics Corporation 45 * Am ai o i i r Eleci ronics u pply * Ampire. Inc. 135 Am annas Wesl 236 Anlennas Wesl 296 Antennas West 89 Antennas West 1G7 Aniennas West 90 Antennas West 276 Artsd * Associated Radio 16 A at ron Corporal ion 41 Ba r ry E iec i ror i es Corporation 42 B.laJ Company 197 Brainstorm Engineering 67 39* 81 17 79 34 32 71 79 84 5 71 43 67,03 81 17 69 . 21 60 32 , 67 16* 7 Buck master Publishing...

Code Tapes

*> tr l f Ji i f fiH I .dr tf-.'jiJ hii ft r, mukr rftr tfvie M Utnjtlr M im* r tun ir'+ ti tr ft r it rtti tiftnttfh t hf M iWJ t rllt ch m vr ij r i h ims ufthiwsands i f biinU, itn ip gotten hrir t crnxfs thti utnazinx ne* 'ftj'ni u vnn 'i . f. j jWfftS, .> < < u tili te whip j rtiUffh thr Nt> m r' .'j-.m .jj'iff spending ltx.1 rhtUi Iftr c hw-s ru< h hht tiiui t ' Slickfef. fv, j j tr whif hii it it u tp t Hi ,ftt iht ( f nJt-,, 'j j i l fhut fju'< t me Aw > hr fi > > ut...

Departments

62 Above and Beyond 72 Ad Index 66 Ask Kyhoom 17 Feedback Index 7K Ham Help 56 Hams with Class 54 Hamsats 53 Homing in 2 Letters 68 Looking West 4 Never Say Die 61 New Products 88 Propagation 70 QRP 7 QRX 8 Random Output 59 RTTY Loop 82 73 international 86 Uncle Wayne's Bookshelf 68 Updates Three-band QRP with one crystal. . see page 10. Cover by Atice Scofieid. Stamp photos by Raymond Schuessler. Ie's like beine there right here an our offices Bow Jtist take advantage of out FEEDBACK card on...

Inexpensive Ham Radio Equipment

Send postage stamp for list Jim Brady WA4DSO 3037 Audrey Dr.r Gas onia NC 28054 BNB& 90 WANTED BUY & SELL AH types of Electron Tubes. Call toll free 1 (000) 421-9397 or 1 (612) 429-9397. C a N Electronics, Harold Bramstedt, 6104 Egg Lake Road. Hugo MN 55038, SNS900 ELECTRON TUBES Alt types & Trans-nrtrrtmg. receiving microwave Large in ventory - same day shipping As* about ouf 3 5002 apeciai Daily Electronic5. P O tiot 5029, Compton CA 90224, (800) 346 6667. 8NB913 dtsk sides over 200...

Ts

MjinuLii Add S5.0G5 H USA CA address add 6.25 Ask ror if catai& g 'Opflfare dupicv ot Simplex* Lo*d, savfi, chan t all from T tones, Packcl. or modem* Unlimited voic* vocabulArv 'Vole* dock executes events Oaily h Wetkly 'Super Macros user programming language '300-4 dig 11 user access codes Disk 4 Printer logging of all ifflpphone numbora dialed, usage trme1 lunchons Tl8 ROlaling Poll* 10 1& Esternal relay conlrols* 2, 5, A CTCSS Tone Paging CW Practice...

Shortwave Receiver

Keep an tar on the loca I rope toi gang. man 101 tne cops, choc i- nui ihe weaihef or jum p Rin listen around These seftsMlva suparhe4 receivers amtjusi the Uckei tii'ytune any MhP portion of Ihe band and have smooth vaiactor iuningf dual coriweraion wlih caramic IF liters, AFC. ad-fuSliple gu-ilch ajid pienly of speaker olum Ruiv on 9 V battery and performance that rivals the big nga' For a nmpfela fifibhed pro kx-* .100 our C* FM cor-Tiur catlona rflDanw V 1 29 95 Soecity band FR ia6 (2m ....

MFJ

SO more Tor greater distance, higher gain ants less interference Wt tri AAE Bandmaster Quads. Callur write today lor free brochure on the world famous.UHF, HF Z 34 antf 6 element quads All-fiberglass construction ugged enyirmmyAII vVEather-Hiyhly iiirfictional ExcellentF B-Packei powerhouse-Tooi-treeassembly*I yearreplacement rflinty *VI SA a r Masiencard WfilcOrne *C u stpm orders, Ala bama Amatein Eleclronics*31G< 1 Cahaba Height's Road-B'ham. AL 352- 3

Jun N

TROY, OH Station W wiil operate T400Z-22002 10 commemofate Strawberry Festival Frequences 25 kHi up from the General 40 meter band and > Q meler Novice band For cenrfi-caie, send QSL and SASE to KS8Z. 1408Coma ft Rd. Troy OH 45373-1212 MADISON, OH The Wireless Institute of Northern Ohio (WING), sponsored by ihe Lake County ARA. will be on the air Sat evening between 2330Z-Q3MZ on 7235 and 21315 kHz. and Sun from t500Z-t900Zon 213T5 and 28490 kH , o commemorate Oh jo Wirw Monih The station caf...

Inline Preamp

- GaAs FFT Preamp w th features similar to LNG series, except automatically switches out of line during transmit. Use *'i h base or 'nob is (artsceivers up to25VV. Tower mounting brackets inci 'Specify tuning ranpe K 175 2Q& 24Q. or *0c soc whe Freamps vsrth 3 or 4 sec cn helic resonators reduce Intcnrrod 3r cross-band interference m critical acpQcations. MODEL HRG-n, 49 vhf. S3 * uhf. Spccjfy tuning range 142 15 150-162, 162174t 213-333, 43Q-450. 45Q-47Q,

Arrlbooks

c nna 2.1 U uhlo. fjpures and dun> TV .tkh i c mprehertM** aid iffiTrd- jMc wnirce o imj epr tufo idcrc-nte tmseruf pape* Si .O l AR20M AflRL Antenna Book Resents tlw he si iilrni t hi hU negan ed ip orrapiinn Ofl amenn* fun-JjrriLrnifllv ttansnktion tirir , design, fmd construction --vi miitfiaiLs S h.ih AKIDHA ARRL Operating Manual P*> ked with in tamul inn on hnw to make the bc*t um of your station, including inicrtjijjn home .unputery OSCAR VHF i HF iE.r4tsiiagSI5.00 A,f i. I'M Antenna...

N N N N Ns N N N N N N N

Tors block the How of 1X there will usually be some small leakage through the capacitor, and this leakage can be much higher with aluminum electrolytic capacitors. It's still very small, however, and you can almost always forget about it, especially if you are using an AC power supply. If a tantalum cap is critical, the designer should tell you. Using Transistor Substitut ion Guides Transistor selection w as a thorn in my side for quite a while. It seemed like every time I wanted to build a...

Sg

HF ANTENNA COUPLER -SSB, AM, CW DATA FAST INTELLIGENT ACCURATE OPERATES WITH ANY HF TRANSCEIVER The Staanunci ln n r t hnulo y L u lcr Intiflipeml um- jn> k-ngth antetiru to BO ft> in Ihr MF hand. This unit wilt operate with any HF transceiver within its' specifications. The Sm+iftiuur HVMKhcs f.-t input an t 32 ouijmc .jpj tt< incc i mtrinatlor plus LiiiJik Ttiru c combustions 111 network rcsuitir gln over a. half-mill km different v, io cmiur a fFOi 1 t-k c match r*> i fiic...

Special Features

* SOLtD STATE ELECTRONICALLY REGULATED * FOLD-BACK CURRENT LIMITING Protects Power Supply from excessive current & continuous shorted output * CROWBAR OVER VOLTAGE PROTECTION on ail Models excepl HS 3A BS A, RS 5A RS 4L. RS 5L * MAINTAIN REGULATION & LOW RIPPLE at low line input Voltage * HEAVY DUTY HEAT SINK CHASSIS MOUNT FUSE * THREE CONDUCTOR POWER CORD excepl lor RS-3A * ONE YEAR WARRANTY MADE IN U.S.A.

Ww I

Untile RTxy other lightning protection device for coaxial transmission lines, I.C.E.'i Model 300 scries require no predetermined voltage to develop between conductors before voltage suppression begin*. Units are constant drain. cap acltor-btocked. non-DC paaatve. and each relies on * heavy discharge inductor paralleled with a ceramic gas-dl*char e aasembly to provide a Ughtnlng-fast trap system for Induced voltages* Virtually indestructible, 300 series airestors are built In 1 8 thick standard...

Dx

22i W How to Worfc (He Competition into the Ground & Have Fun Ooing II by John T. Motley Amcnm-* cnnsuh& nt reveals his proven t*.vh-nii ui.-s Ini ijr ii iJlic iljy iiuTiMsiny how uimh work > iiu < Jn in hull the niiiL.-' 9,95 20N098 Electromagnetic Man by Cyril W. Smith A Srmiin Rest i-tamiiics thu rmHinting evident to I b.irmiul bu logical effects rrx in LFdcdro-ttli Dl'1il fields. Full uttcrlf iauiinjtitii nutcru in m jrtjs

L G

A complete QSO tracking system in one fast software program. Frank Greenfta gh KD2LL 10Robbins Ave. Amityvi le NY 11701 TeL (516) 59B-0011 Price Class 75 Ci onnputer logging programs have certainly proliferated In the last 10 years. Until f found Swisslog. I never realty deemed them exciting enough to explore in detail. Over the course of Ihe last 20 years I have maintained my log in a variety of ways, During the pre-computer era of the early 1970s, I used Ihe official ARRL logbooks. They...

Transmitting

Mode s to convert 10M ssb, cw, fm, etc to 2tA, 432, 435, and foraiv. tW output Kit only S79. PA's up to 4SV, available. Requeisi ca a og for complete fixings For complete info, call or write for FREE 40-page catalog. Send 2 foif o'. - sus sir ma > t For casu> i inttreal eh* ch rflad i service ad low S-4 .- ks Order by mailt fax, or phone (9-11-5 eastern time) Min, S3 S& H charge for first pound plus adcfl weight & ins, Use VISA, Mastercard, check, or UPS...

JUN

HADOONFIELDh NJ The Soulh Jersey Radio Assn. will operate K2AA on a 11 bands June i -15 to celebrate 75 continuous years devoted to amateur radio SJRA wiJI offer an attractive QSL marking the avent. To confirm contact send a QSL and a SASE to South Jersey Radio Assn., PO flo* 1026. Haddonfiafd NJ 08033 MENAt AR The Ouachita ARA will operate KG5GO from 130GZ-240QZ in conjunction wtth the annual Lunand Abner Days hcroringChcrt Lauck and Noms Goh ol earfy Broadcasi fame. Operation will be in the...

Frequency Counters

CT-90 9 DIGIT 600 MHz CT-125 9 DIGIT 12 GHz Ram& ejr Fi*cuoo s ras t*en manu actur ng lnfk lest tot ever 10 0 Art and 5 -ecogn.red 'or is let if products ai breakthrough pnces a , q our cOuri . - c rry 3 lull ofi - on part* and laiscr W-- raiio greai pripe m bamg tP> e lanjH'Li m a nul acinar low-cosl cowmen in imt entire U.SA Compare spec ilicallonti Our coumersareloli-Hf)lured Irom audio to UHF. with FET hi h impedance input, proper wave shaping cifcuiiry, and durable high quality epoxy...

Buy With Confidence

Michigan residents please add 4 sales tax of suppiy your Ta* I D number Wnlten purcnase orders ara accepted from approved government igencaes and most raied 'irms at a I surcharge Tor net 10 billing All s ies are sub.ect fc availabili'iy acceptance ano verification Prices erms ar.a sfjec fnations are subiett ro change *itf> oul nof ce Ali prices are < n US dollars Out of stock items will be placed on backorder automatically or oquivalent product substituted uniiessCEii ristruciedO fTe entiy...

Featuring An Extensive Une Of Yaesu Products

The first low-cost portable hand-held fluxgate magnetometer with laboratory accuracy. For magnetic measurement from i gamma 0.01 milligauss) to 2 gauss with an absolute accuracy of 0.5 traceable to NIST (previously NBS). Analog output DC to 100 Hz. Earth's field vector measurements, air shipment inspection, mapping and recording field perturbations, eta Roe* Ale Sttoet Wobest r MA 01606 U SA pfwne 506- 552 3674 853 32 ToflFrw 1 f toi 9 0350eS FAX 506)05 9931 Codi Man* WALKER SCr Roe* Ale Sttoet...

Get on the

You can still enjoy good DXing, even as propagation conditions decline. Even though Suns pot Cycle 22 has shown some marked kliosyncraeies lately. the consensus . l opinion js thai the number of spots will stKm be showing a marked decrease once again lo any nj user of our higher frequency bands (20 meters and above), that means tleelining conditions on long-haul paths, .ind increasing frustration over the scarcity of good openings lo larawav places. Looking ahead two or three years to the...

Circle On Reader Service Card

Mrt ottMian 45wBn SF-rq l3M5QMHi p- r'JnrC-njy.S eacti wtrh ail acqessories CE free H t3ft-i5S MHz. 40 watt Drawer Unii Only S70 each with 2 F Scan Accessories. Si 25each G E Exec IL* 42-50 MHz SO wall. Drawer Unit Qnfr S66 each. wrtdn accessor group S1 5 each GECentury 31 1.2,or6Freq. 25 wall, 133-155 148-174 S90 each. StandardHX-30aportables 138-1 MHz S99flflCll ALLELES GA5H OF CERTIFIED iUWB SHIPPED BY UPS 113 Central Avenue Billings Montana 59102 TELEPHONE +TELEPHONE * (406)252-9220

KENWOOD

State-of-the-art technique that maxi mizes your transmitted R F energy I LA 100 mlr Store inde- JL I pendent transmit and receive frequen- W TV a a cies, mode, filter data, auto-tuner data I I TlYVirfeT and CTCSS frequency CJl * __ face for computer control Program- lOYICI I mable tone encoder Built-in heavy L jIlI I mj mW duty AC power supply and speaker Adjustable VFO tuning torque Multiple scanning functions K MC-43S hand microphone supplied fc rg . J Optional Accessories Jk F DSP-10 Digital...

Qrx

The parents and students of the Springfield Estates Ham Club, Luke is in the center. the Private Radio Bureau for evaluation, It wouTd be the purview of the PRB to make any recommendation lo the Commissioners for regulatory action. TTVXWestlink Report The nation's largest black amateur radio organization, OMIK Electronic Communication Association, elected a new slate of officials this year at a convention held in Atlanta, Georgia. Elected for president was Mr. Moody T. Law W 6I of...

Tnr

299 Town nd Electronics 55 * Uncte Wayne's Bwkshett 86r87 * Universal Radio________________ 69 120 Van Gorden Engineering , 55 104 Van Idersline & Sons, Inc 79 * VHPCommunicaiitins 51 191 W 4 W Associates 57 3ft W9INN Antennas 5S5 292 Walker Scientific, inc - 77 Bold llitlngs ire 73' n w idvtniA fi ihla month. dveruu a who tuvo contrlbui d to Iti* National Advisory Commlttt (NJiCf. Continued from page 4 want to spring for the 12-second 4.5 kHz passband chips Just what you need to make thai 2...

Raised Printed Tv

IhoLgm you CDuln I afford re all > jood QSL& These hitfi qualitv RAISED PRINTED car(3- cart be in your hands for w . 4c each 'ou* cht ce of - colcr tf 67 lb biistol stock Gray. Yellow. Bije. Iwr> Weprini in blue mk in the Iwmat shown If you don - want the state outline ,v - can remove i jnd make the cailsjgn larger to balance the card NO EXTRA CHARGE for ARRL logo, or extra wording if we have the raom. Order with confidence, these are the best value in Ham Radio today Yriur satisfaction...

Delaware

Factory authorized dealer Yaesu. tCOM, Kenwood, Ten-Tgc, AEA, Kantronics. DR-Si Mfg Amen iron. Cu& hcralt. HyGa n, Heath Amateur Radio. Hetl Sound DELAWARE AMATEUR SUPPLY, 71 Meadow Road. New Castle DE 19720 (302) 3267728, Ross WS7BY2 has the largest stock ot amatuur gear in the ihlermountaln West and the to& st prices. Over 9H000 ham related gear in stock. Call usfor all your ham needs today. ROSS DJSTftlBUTJNG C0.h 76 S. State, Preston ID 83263, (208) B52-0S3O.

1

, I ai.1l ' t- ready , Small igMwoigtfl se ed imflwnert win Ute) h tidv> i4(ti2l ija-jgt' Blended copptrr .i-ir ma*- ta auf wiv iio p pr N-d m I W fw rt k7* 3 50 P im E l jncetl trnni h , r he ir*njde- cortil fr oialoi jrT o - fl' Ct i N u0f rt 'Tl ftH tul** aw) et p lyjJtly mmhH fl OnnD 7D teet > m wfn WC rt M m iPlrt m g HMff J i* F i wi lU Itirou if- rt'f M t, DW 1- T-r-. r , bt .t . T lora Ilm ALj- BANnin DiPDLE, a luir I KujQlel l flfl AniBn'l is FuJIy MflemW- 13S lneE w H II Iq 4 OHM...

Texas

We feature Kenwood, ICOM. Yaesu. AEA, Butternut, R hn, amateur publications, and a full Jine of accessories Facotry authorized Kenwood Service Center ELECTRONIC CENTER. INC,. 2809 Oft* Ave., Dallas TX 75201 . (214) 969-1935. Circle Read er Serv.ce 74 tor more in for ma tor D ALf RS Tour company name and messagr can contain up to 50 wonts for n kttl* b 420 yearty iprtpiidj, or H10 tor i i monies prepaid). Mo mention of mail- d r buslineia plea . Directory 1 eal and paytneni...

T

Nev- Technology (patented) converts any VHP or UHF FM receiver into a sensitive Doppler shift radio direction finder. Simply plug into receiver s antenna and external speaker jacks. Modeis available .vith computer interface, synthesized speech, fixed site or mobile -108 MHz to 1 GHz Cafl or wnte (or details Phoenix. AZ 85046 FAX 1602 488-1295

Way Radio Service Monitor

CO* .' Ih* wortls TTQit MpulJ tc-JV-COSt ini'V e *T1Qfa- tar For u*icisb g o* small the COM-3 del- advanced cap*t*fatiei tar a tantalc pnc*-ind our new tease pro-cram alow you > 0 own* COM-3 tor less than i3 00 a day Featured ent*> fce> tsoaro *iih prty j maista rnemory * A u& eitrwHrnirter tr juerEy cou LED CUT yapfi ffwyveneyfenvr ten it* d A y 1-10000 nV OU 0UT -High 'KflrVfl Mnsilrvfty. 1 5 than 5 100 kH* to 999 9995 MHr Connnuoos Irequency coverage TranBiWI prutechon. uf lo 100 n...

The Rf Connection

SPECIALIST IN RF CONNECTORS AND COAX UHF Mijle Phenolic. USA made .70 UHF Male S iver Teflon, USA 1.50 Reducer for ROS9& MrNl 8 20 NMaieRG S, 13. 214 large tjody '> 00 N Mal P n for 9913, 9006. E214 fits UG-21 D U & UG-2 i BID N's L 50 ri Male for RG-S with 9913 Pin 3.95 N Mi-ile for fiG-8 witM 991 3 Pin 5.75 M Male to SO-239 Teflon USA 6.00 N female to PL-259. Teflon USA 6.00

Fwj Shown

P.ct ihe urtii mar's nghr o.j At un rs traWTiil siafiie m 9- 100 MM FW Dand up to 300 lor hi FMJ 1hal poflfl up lo Vt FM-2 rL- iirxive but with aOdr d rm ie preirinp i 7 95 FN'4 long -.vjge higtipower nth *e uiniiirve auoio sectaon. parks jp voices 50 awey JUW f7 -.1 .-rurrt nciv> itase banery i* en. ar nm, anMAWriu 'Oin'y. wecy imam, kd F' JiVT ai . & JT fu tr *> t*ti SWC mifiialure sensil-vfl ijr. Itiagekji FM-1. 2.4 95

Yaesu

RG-6X 9256) 50 ohm loam RG-11A U 82G1) 75 Ohm. RG-56Aj U (8259) 50 Ohm RG-59 U (8241) 75 ohm. 9913 low Joss, 50 ohm. RG-213 U (8267) 50 ohm. Mil-spec. flG-6'U (8237) 50 ohm. RG-8 U (8214) 50 ohm. Foam, RG-214 U (8268) 50 ohm, double shield. Don't settle for less man the best Call us for BELDEN, COPPEBWELD ANTENNA WIRE Sohd 12 ga Solid 14 ga SUandi 14 ga Call tor prices StandarO(6-22. 2-18) Heavy Duty 6- Ta.2-16) Catl for prices We stock Amphenol Connectors and Andrew Heliax,

Mdc

Caparitor CIO keep the 12 volt power to the final transistor clean and solid. A circuit board etching pattern w illustrated in Figure 3, and a component layout for the pattern is shown in Figure 4. Other construction techniques should also work, The digital integrated circuits need solid grounds and proper bypass capacitors. Toroidal inductors L3. L4. and L5 should be wound spreading the turns over about two-thirds of the circumference. Leads should he kept as shon as possible on ull...

ICOM

Height in his neighborhood and the local authorities have ignored the FCC on the matter. He wrote to the ARRL and got stiffed. He wanted to know what I'd suggest he do. The local hams are at their wits' end. I wrote, saying, Yes, the ARRL certainly should do something about your lousy situation. That's what a real national ham organization should be set up to help with The fact is that the League has been very reluctant to tackle legal cases to help hams. When I mention this I gel angry letters...

Circle On Header Se Rvfce Card

Turn your old ft am and computer gear into cash now Sure, you can wajl tor a ha mfest to f y and d u mp it. but you know you I get a far more realistic price i f you have hi out where 100.000 active nam potential buyers can see it than the few hundred local hams who come by a flea market (able Check your attic, garage, cellar and closet shelves and gel cash for your ham and computer gear before it's too old to sell. You know you're not going lo use it again, so why leava C for your widow to...

Nww

Hanrj rvjids IC-02AT High Power IC-04AT 440 (Ghtmt) IC-2SA 2m HT (SM IC-2SA1 r TIP (Spec.' IC-3SAT 220 HT TTP IC-4SAT . Q HT FTP Regular SALE 409 00 349 449 00 329 IC-2GAT 2m HT TTP 42900 379 IC-4GAT 440MH7 TTP 449 00 369 tC-12GAT 1 2GH TIP 529.00 469 (C-W2A 2m 440 HT 62100 529 IC-24AT 2m 44G Hi 629 00 419 Aircraft band handheld Regular SALE A-2 5W PEP synth. aircraft HT 525 00 479 A 20 Synth, aircraft Hi a VGR 1 pec 25 00 499 IC-275A 25w 2m FM SSB CW w ps 1299 00 1129 IC-275H lOOw 2m FM SSB CY...

Aym

Are you too scared or too old to climb Never climb again with this tower and elevator tram system, voyager towers are 13 ana 18 inch triangular structures stacifebie to any height in 7 1 2J, 3 3 4' or 10' section lengths Easy to install hinge base, walk up erection Next plumb tower with leveling bolts in Dase. Mount rotoi and large heavy beams on Hazer tram and with one hand winch to top of tower For normal operating position. Safety lock system operates wniieraising or lowering. At last a...

Made Easy

The keyers controls are very straightforward. For recording a message, select Message 1 Message 2, place the keyer m record mode and press the start switch. The keyer is now recording. Key in your message. At the completion of your message, wait until the keyer times out and the 4'complete'1 (red) LED is on. To play a recorded message over the air, select Message 1 Message 2, place the keyer in play mode and momentarily press the start switch. The keyer will now play your previously recorded...

Circle G On Reader Service Card

Box 832205 Richardson TX 75063 I did something Ihis year that I never intended to do. I've been telling people for years that I wouldn't do It, no way Bui 1 did it anyway J operated QRP I operated ORP during Ihe early hours of the ARRL Internationa DX CWContest, I don't Know what caused me to do this, excessive sunspots or miodle-age crazies my XYL suggests 11 is over-fhe-hill c a es Whatever it was. I just sal down in front of rny 100 wall transceiver kW amplifier...

Advanced Features Such As

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

Moul Rd Hilton Ny

Phone 716-392-9430 - FAX 7J6-392-9420 Hnmlrdnitt i4 Vj> rlomrtn C pyrigM H ni1i n i.t, l' u All HtjUb J Here's your chance 10 subscribe at a pre-publication rate to a brand new ham publication. The Premiere Issue alone should turn out to be worth several times the subscription price The first issue of 73 is going for hundreds of dollars these days. The pre-publication subscription price s only 9.97 for 12 issues Not only that, but you'll get at least S25 in discount coupons us a bonus. That s...

Ug Ug

Fnow m g d> JCi-210 9913 UG-2 16 9913 UG' 1 46A U UG- 3B.'U THIS LIST REPRESENTS ONLY A FRACTION OF OUR HUGE INVENTORY1' SEE US IN DAYTON AT BOOTHS 156 & 157) THE R.F. CONNECTION 213 North Frederick Ave. 11W Gaithersburg, MD 20877 ORDERS 1-BOO-783-2 666 INFO 301*840-5477 FAX 301-S69-3680 PRICES DO riOT ir-iCLUDE SHIPPING PRICES SUDJECT TO CHANGE VI5& MASTERCARD. U S c.0 0. ADti 00 PER ORDER

Kenwood Performance Plus

PB-25 26S 3.4V WOmah 65.00 PB-M2V 1200mah Manufactured in the U.S A. wish etched cdta.frase Super Pack geuia short cprcL.i fH lcction nr.c overcharge protection and a 12 month warranty. All Inverts in slock or Bv pi bfe from authorr inl deal& ja. CAI L US TO DISCUSS VOUfl BATTERY RE UIREMfNTS Add S4.M S+ .pt -ng 4 H& mJJrnfl Connectiodl residents add fl ta* In Connect t 203*264*3985- FAX 203*262*6943

N Rc

E Computer REPEATER W Concepts CONTROLLER * Autopaich * User Programmable CW LD, Control & User Codes & Timeouts * Intelligent CW ID * Auxiliary Outputs * Easy to Interface Remote Base Tape * Reverse Patch * Taiibeeps 12 VDC Operation * D1MF Decoder with Muting Telemetry * Control RX * Response Tones * Programmable COS Polarities * Detailed Application Manual with schematics * 90-Day Warranty Wired & Tested w manuai 239.95 Micro Computer Concepts 7869 Rustic Wood Drive Dayton, OH 45424

Baluns

y B1'2K1 12KW Cuirwil-Bilun' 117.95 F S+-1.5K 4 1 Low Eo*41 .iK MMDM (14,95 f T4K CufttitHype Betm blun 1 I 4KW 124. Riirtdii EWun 4.1 to-con Currtiil-Stliin US Free KJ page Discount Catalog, Evtrylhing tof wire antennas, connectorv coai. Allow 4-6 for Bulk mail delivery of Catalog or wnd 2 lor catalog by Priority Mall. Mention ad for these price . Prices are subject to change. ADD SHIPPING - Call for COO, Visa 4 MC welcome. Give cardexp. date, signature, VA residents wkf 45H Sales tai. 8 ad n...

Model Vsca Antenna Couker

The Bartter S Williamson 1500A antenna coupler is designed to match virtually any receiver, transmitter or transceiver in the 160 to 10 meter range (1.0 to 30 MHz) with up to 1500 watts RF power to almost any antenna including dipok 5 inverted vees. verticals mobite wnipi beams, random wire and others, fed t-y coo* cabte balanced lines or a single ire A 1 4 balun is buiJt in fbr connection to balanced lines m Series parallel capacitor connection for greater harmonic attenuate Fp> ccuit...

Ez Key Cmos Keyer

Send pirteci CW wHhin an r our at recertinr tms hrr' a * 10-buiic M has sidet fw osctllator speed coniroi a d heys 7 os any trwtmtuttQ' F jr e t. tris a 9v 3S-page mwual g> v*4 deas on -rrikrng your own key tor eitra sawmgs Add our matcttng ease se' 'or EQfipiete -Eiaijoo took Mate ase non I.C W 1I29 6uJd your 3wri mi ham tait n Sensitiva pM-mode AM CW. S3B receiven use direct conversi n design m-tfi NE602 IC as eatu eo n OST and AmRl hjna-Tooki Wefy v& tactor luied -v r e r re baFit...

Jum

6URBANK, AL0EHTA The Central ARL Will hold their 19th Annual Picnic at the Qurbank Campground, located ai The confluence of 6hnd-man and Red Deer ftoef Valleys Sean-private camp sites available by reservation. Reseat* starte Fri afternoon Capping f& s 5i 5 per family j-it. 510 peT suxjifi unt. Si 0 fo weekend private stal Sat evening barbecue dance 5. S3 lot children under 12. per we .enti pass no camping) Contact Pal WtQht VE6ALD, 896-3883 or look i or a message on the CARl BBS VE6& JH....

M A Booster

Here's r.' -ai boo ie loi any 2 moler or 220 MHz hanO-hald um I Thpuo pgwiflr boosters deliver ovei 30 watrs r> f ruipvi. aii wrng yc u m hit 1 hip mpoatef's full qiiielJttg whLle ihe low noise preamp ramarkat y improvisa reception. Hama y EledrOntca had Did thousands ol 2 motar amp hHa but now wa ofrrjr nomploteiy wired and lested 2 meter, is well as 230 unils Bern have all ihe features ot the high-priced boosi-era al a U ,jci ion ai Ihe casi PA 10 2 MTfl POWER 900STEP (H> X po* r nh PA 20...

Circle G Oh Reader Service Card

*Lot& cl rourid rrace - C m onerits may nwunted on IOM or flielrctr side *P l r ir G(l hr ooi oldsrabili y of send S ASE Fe inJo and ayoul tuning gmrie *Lot& cl rourid rrace - C m onerits may nwunted on IOM or flielrctr side *P l r ir G(l hr ooi oldsrabili y of send S ASE Fe inJo and ayoul tuning gmrie GARDEI ELECTRONICS P.O. BOX 1751 WEST CHESTER, IPA 19380 Rorors, Parts anc Repair Service Reconditioning Large or Small American Made Rotors ftepairs-S20.nCT VtSA Rebuilds- 40.00* Afl pans...

Then Then Then

34 IF MS 3 THEN 300 36 IF MS - 5 THEN 500 3m CLEAR CLS 301 PRINT SPACER(30) OHM'S 312 PRINT SPACE (26) 3 -315 MS ItfKEY IF M 1 IF M - 2 IF 3 GOTO 315 CLEAR CLS 32 J PRINT SPACES 30 ) OHM13 LAW 322 PRINT 323 PRINT PRINT PRINT 3 24 IMPUT ENTER THE VOLTAGE IN VOLTS 3 25 INPUT ENTER THE RESISTANCE IN OHMS 328 PRINT PRINTIHTHE CURRENT IS MFNA l) 331 PRINT SPACE 30 OHM'S LAW 332 PRINT SPACE (20 ) ---------------------------- 334 INPUT ENTER THE CURRENT IN AMPS I 33 5 liJPUT ENTER THE RESISTANCE IN...

Other Radios And Accessories

XC3B5-A Un < den Ultra Qear Plus Cordless Phone. S89.95 CT7B5S-A Unidvn speakwptiopeoordlass phone 109.95 BC55XLT-A BearcM 10 channel scanner Si 14.95 AD1 00-A Plug in wall charger for BC55XLT 4.95 PSOQ1 A Cigmelle llghler cable for SC& SXLT ., 14.95 VCO01-A Carrying case for BC55XLT S14.95 BC70XLT-A Bearcat 20 channel scanner. 159 95 BC1 42XL-A Bearcat 1 0 Ch 1 0 band scanr S34 95 BC147XLT-A Btitfrcaf 16 ch 10 t and scanner 94 95 BC1T2XL-A aeflrciT 20 Ch. 11 band stdnneT Si 34 35...

Hs

1500A 1-1500 MHZ Frequency Counter Only 99.95 BP-15 Custom Internal NI-CAD Pack (installed) 20,00 AC-15 110 VAC to 9 VDC Adaptor Charger 9.00 1500A C Counter Including NI-CAD Pack & AC ADP 128.95 1500H5 HI-SENS Counter Ire. NI-CAD Pack and AC ADP .169.00 TA-90 Telescoping BNC Antenna, General Usage 12.00 DC-10 Probe, 50 OHM, 1X, 3 Ft, Cable 20,00

Rutland Arrays

How Cunberlanrt, PA 17070 529 7'ID pm EST H IHL ' JI.'- h IMV thli Tne Barker & Williamson PT2500A Linear Am plifier is a completely self-cortasned table-top unit descried icr continuous S3B. CVv RTTY, AM or ATV operation, intended for coverage of ail amateur bands between 1.8 MHz and 21 MHz. Two type 3-500z glass envelope tnodes provide reliability and rapid turn-on time. Pi-network input fen rnaximunn drive Pie& surized plenum cooling system DC antenna relay for hum-free operotbn...

Tt

Afinco s New DJ-F1 F4T Realized1 Super Compact Body and Plenty of Features including * 40 Memory Channels store Frequency, Shift direction, Split operation Setting, Tone encoder Tone decoder setting (with optional Tone squelch unit). DSQ setting, Tone frequency and Offset frequency independently, * Digital Signal Display and Memory Function The DJ-F1T F4T has special memory channels for transmitting, receiving, and store Two Digit DTMF Tones, for communication messages. This feature allows for...

Certified Products Corporation

The new RED ALERT multi-use meter from Certified Products Corporation will alert users to the sources and intensity of low frequency radiation, suspected of causing cancer, from computers, power lines and other electrical sources. It will locate hidden or buried electrical lines and help prevent accidental encounters by anyone digging holes, tearing out walls, remodeling or working near electrical fines. It is priced at 69.95, plus 2,95 S & H. Contact Certified Products Corporation, 2816...

Delta Research

PO Box 13677 tVauwatosa W 53213 FAX or Phone Weekdays (414) 353-4567 Cbmuos 501 US (kernte* Nu , iidrrs . da , nd Jtarof birth. In unr icmivaJ < > n Mj iriM-.h or PC vfwn in ten fncnut h> an> iktfaK t Lii vtiih a hanf -Ii k. < rH fr n Jivkcnc Source code and J< tciinunUAit m itk ludrd 1 verified hiptl ijiulti d ii t 3c> P 5J5 UMrt disks 69 rUjK ifl hlpj'iiif in hI IiiiiiiI1Im 1 CA irMikilli hJlI 7'V. nili-i MX ( xlJ link I . nui*

Israel

Ron Gang 4X1MK Kibbutz Urim 0 N Hanagev 85530 Israel Israel gets 6 meters i m happy to report that since the bt-ginmng of February f a siiver of the 50 MHz band has been made available to Israeli radio amateurs, it should be rioted thai this band is not an amateur allocation here in ITU Region t, ye due to the interest shown by amateurs in Europe and Asia in the band, certain countries have been opening up some of the spectrum Happily, Israel hus now joined them, and 4X 4Z will be a...

Bow

Santa Fe TraiL south out of Littleton. Colorado, at a speed of about 60 MPH Nothing fell off in the first few miles, so I tried a tew QSOs to see if the device would also work eleetronieally. i made a number pf contacts all over the country. My third QSO was with none other than Bill Brown WB8ELK in Hancock. New Hampshire, giving a demonstration of the 73 hamshack to a group of students. Good luek in your construction endeavors and enjoy your mobile operations with the knowledge thai your...

Sr

CONVERT ANY TRANSCEIVER INTO A FIXED, MOBILE, OR PORTABLE SIMPLEX REPEATER The SR-7100 is a store-and-forward simplex repeater, it can store up to sixteen seconds of audio in electronic storage. When carrier is received, the repeater starts recording. When carrier drops, recording stops and a tinner is started. This timer can be set for 1t 2, or 3 seconds, ft earner returns before the timer times out, the previous message is erased and recording begins again. If at any time the timer times out,...

Every Issue

The entire run of 73 from October, 1960 through iasl 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 wifl tit 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 partiat sets) for 250 plus S5 for shipping (USA). Annual updates available...

Very Powerful

St.at e of-the-art technology & circuit design make the DVH 58< Digital Voice Very lou standby current - only SmA w 4 Mega DRAM. On board 0.5W audio amplifier w volume control internal or external), ADM . Adaptive Ikilla Modulation 1. Selectable 16K 32K bps sampling rate. Memory expendable up to 4 Mega liRAM which gives you total of 2 minutes recording at bps. Selectable REPEAT mode switch. 1< 3 v ariable iengih messages each w direct inhering terminal enables you to play back any one of...

Packet

H ' 34T,Afl About VHF Amateur Radio by WiUkm Orr D pmpa tbn. VHI jim quad be aim. rwi tv. * they * ti. OS AR 9adfflc RTTY Today by tor* hem A'JTH Onh JuiT sm Not inei erwv 01 w Jl beds of RTT1 Mi RTT jctdJc c n puh- J J ciJ MJi ill tfi id Iflpaep, SK.W iMVl tlw Basic Guide to VHF l KF Hani Radio h fjfwinf W Thiv Kn.it pruviil . ftrsi TJ1L- AftUV QRP Notebook t Om iVM H7FB PTr cffs omstnebn penjeits for the QRP 'Jprfau*-(mtn j simple I *an eryiUl-cnniTOIW lianirmnef t) rrh ii compie...

Circle I On Reaper Service Card

Read several tellers in the April iss-je concerning dissatisfaction with service rom American manufacturers of radio products I wtsti lo report a very positive experience with a U S company, namely Healh 1 built the Heath SB-1000 linear amplifier and had a problem with the output After much searching oy rr.ysetf and several other hams, I sent the una back to the factory The unit was returned severa* wyeks later with a plate choke modification U worked properly for a few days, than the original...

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 (*, , A, B, CT 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...

Grv Antenna

C5RV UULTIBAISDfH , -ma i -' --n- , - .J. M* ici to t of* o a uH me r r j * w uwd ** i -L-- i .h - - iluE' lipat .tt , Tr proper corrtMtan Of * T HtCf ai'tDp It UM tf 0M KW i r-i'l ' 3r tatf r 8t C * i O h V TberE n ton and Ti e a.i- jyEserr ar tia or JHQ l.ht wml4 u ntmr ni n 1me r bt> u1 S0-60 tfimi a good male h la the 7 fini Dr RGflX midi laam cofli II comes complnii- r .i-.- ombloO rptdy lui jusmltano hi< 1dl S 2 KW PF'-indi may tji> . i, J m s honionru ar in rtfffH) V L irtF-rjLira...

Accessories

TD-3 SUE AUDIBLE TONE DECODER ENCODER Hit Adjustable for any tone. Designed especially for repeaters, with remote control acrtivata deactivtfo provisions 24 COR-3 REPEATER CONTROLLER K* Features adjfustabre tail & tir-e ou* timers, soiid-state re-ay, courtesy beep, snd tocal spea e- aThp-frer S-1.+ C i . kit Dtodo pros rammed any time in the adjustable tens spee . and timer, to go with COR-3 59 COB 4 Complete COR and CWiD all on one board for easy construction CMOS bgic for tow power...

Vsu

LOAD ihe new program by typing LOAD HAM2 and pressing ENTER, When the computer signals READY on the screen, type RUN and press ENTER. The next thing you should see is the MA N MEM. for your new HAM SYSTEM. It should show five selections ANTENNA DESIGN MATH. TRANSMISSION LINE MATH, OHM'S LAW, POWER FORMULAS, and EFFICIENCY FORMULA. Next month, in Pan III ol this four-part series, you'll add modules six and seven RADIO HORIZONS and OHMS TO RESISTOR COLORS to your ham shack software. You may reach...

Expandable Repeater System

* A NEW CONCEPT IN REPEATER DESIGN, THE Hi Pro IS AM EXPANDABLE REPEATER WITH THE FOLLOWING FEATURES A BASIC REPEATER WHICH WOULD INCLUDE A COMPLETE RECEIVER, TRANSMITTER, CORr FRONT PANEL CONTROLS AND INDICATORS. LOCAL SPEAKER AND MIC JACK AND CAPABLE OF FUTURE EXPANSION AIL HOUSED IN AN EXTPEMELY RUGGED. ENCLOSED. 19-nCH RACK MOUNTABLE CABINET. THIS SYSTEM CAN BE EXPANDED AT TIME OF PURCHASE OR CAN BE AN AFTER-PURCHASE ADD ON THE ADD ONS ARE HIGHER POWER 110 220 VAC POWER SLPPLY, IDENTIFIER,...

Fantastic M Fm Transceiver

R amse j breaks the po& e harrier on 2 tat r*gsh Her e' & I he tdea rig toHiekddaj's. hamtesls, vacalkifts, secondcara and packet 1 even has Oedicat& o packet connections). Six exp iiJabla diode-programmod channels. 5W RFoulpul, sensitive dual conversion receiver and EASY aassmbiy. Why pay more loi a aacondhand old rig when you can make you> r own lor less Have some Dun with your own truly AMEFiiCAN-MAOE Hd rhgi Trus kit come oom-plete aatool tor the case rn.ko and speaker ICOM or eq...

Hun

Side view of the Z-ctaw. (b). Top view. il cut another piece of stainless from the fiat stock, iliis one was 3 long, I rounded the corners on only one end to a radius of 1 2. Drill a 3 16 hole at a point W* in from the rounded end. Then tap it for a 1 4-20 hole. 1 placed I of this end in the vise to effect a 90 degree bend using a ball peen hammer. Next, placed the opposite end 1 in the vise, and made another 90 degree bend in the opposite direction of the first bend. This makes the...

Toll Free Order Lines

TERMS Mtrtirnum order 10 00 Stopping Jrttf handling tor the 48 C rtinontai USA 3 50perordw. AH others tne utfng AK Ht. P or Canada must pay tut ih& ping A It ord nt tfeit vored in CAL IFORN 4 mos r incivda s f.T r p.j t lax te . 6 Ii > 7 ) .Quantities Limited NO C O n Prices subject to change wuhoui no tic o TERMS Mtrtirnum order 10 00 Stopping Jrttf handling tor the 48 C rtinontai USA 3 50perordw. AH others tne utfng AK Ht. P or Canada must pay tut ih& ping A It ord nt tfeit vored in...

Power Length

1700MHz 8 5dB POWER 50 wn fe LENGTH 2Y' CONNECTOR N ypt Mobile Fiberglms Anteima GAIN 146MH 2, 5dB 446MHz 2 ISdfl POWER 20 warn iENGTH W CONNECTOR H-type Triplexer w Coa* POWER m ii BOO watts 446UHz m worn __1Z0DMH2 200 wolfs 0NNE T R OUTPUT N type 146MHi INPUT UHF 446MHi INPUT ft-type T OOMHi INPUT N- yp POWER Same as ft 43f CONNECTOR OUTPUT N-lype 14ANIH7 INPUT UHF 446MHi INPUT UHF I200WHZ INPUT N type 1275 North Grove Si reel Anoheim, CA 92806 (714) 43M54I FAX (714) 630-7024 Easy...

Rttyloop

Leavey, M.D,t WA3AJR 6 Jenny Lane Baltimore MO 21208 With the approach of Field Day, I sat back and related on (ust hov, (hat impacts cjn RTTY On the surface I get ttirs menial image of a Model 15 in a sedan chair. being sransported o the wilds of the outback When Field Day was conceded, that was exacts what ponable RTTY was all about, unless you had a Mighty-Mite or the like Bui not loday1 3urer the hardy among us might still lug along a conventional teleprinter, and there are those we...

Antarctic Terr

Weekly stamp newspaper isuch a* Linn's). which you can also look over at most libraries, Search their ads for dealers who specialize in the nations whose stamps you need. You can mail-order stamps, too, You can also subscribe to a new issue postal service. The service will send you all the new ham issues as soon as they are released. Visit a local stamp shop. They may have a ood selection. You may be able to fill out some blank spaces in your collection. Used stamps are cheaper than new . mint...

Giveaway

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 1C-24AT mfni-haridheld gives you full operation on the 2-meter and 44Q MHz bands, while offering outstanding flexibility and performance.

Circle Ss On Reaper Service Card

Unpa rallelled Log S Li t i s tics- Auto QSO Alert Indicator Auto Country, Prefix, and Zone Selections. Pnnt Log Sheets,, QSt Cards, and QSL Labels. Dual Clock Calendar. User Configurable. Search Jnd Sort on C all Sign, Date- Prefix, Country, State, CQ Zone, ITU Zone, or User Defined Fields. IBM Compatible. ffrwv jtovtoif4 plrn c ind ej if sjfrs tirl 30 Day Money Back Guarantee FREE DEMO DISK (lntludf ior fc Ht Send Cal and Disk Size (5,25 or 3.5> to Sensible Solutions 4908) 495-5066...

V

A peek inside ai the finished circuit. to shift the crystal frequency. The other inverters are used to buffer the oscillator and shape up the waveform. Crystal XI is a plated, AT-cut fundamental crystal in a HC-6 U holder, However, this oscillator design is very tolerant, and works with most microprocessor, color burst, and other surplus crystals For three-band operation, the cry stal must be cut for the 20 meter band. I use 14.060 MHz since it Ls the standard QRP for 20 meters Divided...

Wnsd

Coin P O B 1 4 S Ben Lomond - CA - 95005 (408) 336-3503 Bose Repeoter n enna GAIN 14 HzS 5dB i 8Wfch**5 44bMfel 9dB S Ittowil mmil- 5D0hm SWR 1 Stfrtf U I M 4-148 KHi MWf POWER 200 m IENGTH U T WEIGHT Slfc 12 01, MOUNTING MUST IM'A CONNECTOR UHF (SO 39) CONSTRUCTION Henvy Duly Fibftiglass SCREW-TOGETHER AGS JOINTS ATTENTION REPEATER OWNERS DELTATONE 2.0 The Ultimate 16-Digit DTMF Repeater Programmer 149 Includes Interface Software CS Check, MO. VISA Of MASTER Accepted - S4 for S H

Ww9x Transmitter

Versatile QRP transmitter for 80, 40 and 20m. When building simple QRP rigs, the mast expensive and difficult pan to find is he cry stal, or rock. Usually they have to be specially ordered, and delivery may he slow. The transmitter design in this article allows the same crystal to, serve multiple hands, which makes for flexible and economic operation The circuit consists of seven basic elements the oscillator, divider, keying circuit, amplifier, receiver limiter. ilIters, and power supply. li s...

Jov

Make an expanded voltmeter for Fteld Day VDC in most cases, the voltage of a fully charged gel cell battery is 14,4 volts under charge) the meter will then need to cover a range of 0-5 vofts, since we are referencing against the zener diode voltage Construction is. by design, simple Only tour components are needed You'll need a 0-1 mA meter, a zener diode, a resistor, and a trimmer pot Check the parts list on the schemaiic. A suitable meter is available from Radio Shack. The meter, as...