Ok Corral Tombstone Az Aug

Special event station W7GV will operate from the 4th annual Rendezvous of the Gunhghters, on Labor Day weekend from the OK Corral, Tombstone AZ. The OK Cor ral was the site of the shoot-out between the arp and Clanton factions In 18B1. VV7GV is the oldest active amateur-radio call in the state Operations will oegin at 1600 UTC, August 31, and will run through 2200 UTC, September 2, Frequencies will be SSB-28680, 21350, 14280, 7200, and 3730 CW 21130, 7130. and 3730. A certificate will be...

N

Sf AWJVG th INDUSTRY SINC 79 Phone (71 B) 646-6300 Cati CECO For y ouf CCTV Securtty And Co> or Production Requirements D 2A will boost 1 Watt of video up to as high as 40 Watts. This amount of power generates a respectable signal, especially it working into a high-efficiency antenna such as a KLM 440-27. It goes without saymg that do-it-yourself projects tend to reflect the wants and wishes of the doer. This project is open to considerable variation, he bezel, for...

Lur

A Advanced Electronic Applications pmmm -mi w-r-rm-mirra-r - - - m u u i B - - - - J. a - - Ace Communicai ions,., 35 Advanced Computer Controls 87 Aflnco Corp * -12 Ail Electronics 22 Amateur Comm., Etc 51 Amateur Electronic Supply 23 The Antenna Specialists Co 13 Astron Corp *----- 39 Barker & Williamson 35 Barry Electronics -51 BUI Ashby & Son Al Blue Hill Observatory - ,54 CES, (ne 91,96 Cagen Software * .55 Charge-Rite - , .75 Coaxial Dynamics .85 Communications Concepts, inc,...

Upstate Ny License Classes

Amateur-radio training programs for all license classes are scheduled to start In Ihe fall In lour New York areas Potsdam-Canton, Fort Covingion-Hogansburg, Ma lone, and Saranac Lake Lake Placid, For a complete schedule, contact the Program Coordinator, AI Lapier W1CSF, D.Uane Road, Mountain View NY 12963 (5l& -4& 3-0046, The Wireless Insiitute ol Ausiralia, the world's First radio society win celebrate its 75th anniversary during 1965 The WIA 75 Award will be available during Ihe period...

Aug

The Tri-County Amateur Radio Association will sponsor a hamfest on Saturday, August 3. 1985. from 9 00 am to 2 00 pm, Indoors at the Palomares Park Recreation Hall, 491 E Arrow Highway, Pomona CA (N. side oF Arrow Highway at Orange Grove, between Towno and Garev) Admission > s St.00 A limited numbe of 2 1 2 8 tablet will be available for 00 per table. Setup is at 7 00 am. Tables must be reserved tcall Joe Lyddon WB6UFX ai (7l4t-98C 4563). Refreshments and free parking will be available*...

Brookfielo Zoo

The Chicago Suburban Radio Association win operate special-event station W96T from the Brookfield Zoo. Brookfield 'IL, to celebrate ihe zoo'4 annual Country Fair Days Operation will be On August iDtl and 11th, from 1500 UTC to 2300 L C, using Ihe phone frequencies of 146 55. 14,250, and 7.250 MHz. A special SL card featuring ihe zoo s Clydesdale drall horse team will be sent lo stations thai send their QSL card and a *10 SASE to N9BAT Special Event, PO Box 86, Lyons IL 60534. The Panhandle...

Brazil

Qerson Ri ift PYTAPS P0 Box 12178 Copacsbana 20000 Rio de Janeiro, RJ Brazil To get a few Brazilian aw aids, rules tor which we already published here, it is nee essary to work as many as possible diller ent cities in the siatt of Sao Paulo, the most populated state of Brazil, However, many of those cities don't have amateurs living there Those awards, sponsored by the Brazilian CW groups, are availably only for QSOs in CW. So. trying to help us, two friends. Fran clsco Muller PT2RRG and...

Iqk

Fig. 2, Modification of hfo circuit for 15-MHz WWV reception. CUT F ll ANU DRILL 2. HOLES FDH COMMON iNU f Oi LEADS TD HELAr F0IL-S1D VIEW BF CRTS' '- - SWirCH-B04m F0IL-S1D VIEW BF CRTS' '- - SWirCH-B04m CUT F ll ANU DRILL 2. HOLES FDH COMMON iNU f Oi LEADS TD HELAr Photo B. Close-up of modified three-wafer mode switch. S-meter relay and front-panel VOX controls are visible at the far left pole toggle switch mounted near the bandswitch (again, see Fig. 3). This comes closer to being quick and...

Magnet Mounts

For HT owners operating inside a vehicle and wanting increased T R range, RF PRODUCTS has the low cost solution. Remove your BNC antenna from the HT and mount on the RF PRODUCTS BNC magnet mount. Install the magnet mount on the roof top and connect the SNC co-ax connector The magnet mount (pari no. 199-445 has 10 feet of smali (5 32T co-ax with BNC conector attached. PRICE 15.95 M,C, or cashiers ck via UPS gnd. Fla. residents add 5 tax, for air UPS add 3,25 The RF PRODUCTS Magnet Mounts are one...

It

The SCR2000X Microprocessor controlled repeater is the newest addition to the Spectrum Hi Tech Repeater Line, It combines the latest state of the art digital techniques with the best of Spectrum's highly refined RF technology to yield The Ultimate Repeater Operating convenience and flexibility are emphasized without sacrificing traditional Spectrum reliability and ruggedness. Go with the world leader in Amateur Repeaters Call or write today for details. Sold Factory Direct or through Export...

Info

Block diagram of the DSE Commander. MHz intermediate frequency at the output of the mixer, Q7. The lower vco f re-quency is obtained by switching a different crystal into the offset oscillator Now let's have a look at the circuit diagram (Fig. 2). Don't shudder. We'll consider the receiver circuitry first mon-emitter amplifier with L3 as its collector load L3 is part of the three-stage bandpass filter which only accepts signals in the 144-to-148-MHz range, MOSFET Q7 is the mixer Gate 1...

Sssa Special Event Stations

This year of 19& 5, Sveriges 5 and at amatorer celebrates Ms 60th anniversary. The Swedish licensing authority ga e the SSA ihe opportunity of using the very rare 7S prefix lor this occasion during Ihe period April 26 to May 31.1965 Various radio clubs were part of this activity by being able to use the special call for certain club activities for a few days each. Tfwe was one special cai i on the air from each of the 3 can areas i.e., from 7S1SSA to 7S7SSA and 7S SSA. If you have worked ail...

Best Buy On Kenwood

Quantities limited, shipping extra Check, Cash, orC& 0< H.L. Heaster, Inc. 203 Buckhannon Pike Clarksburg, W. Va. 26301 W. Va. Toll-Free 1-800-352-3177 Naiion Wide Toii Free 1-800-824 7088 Florida (904) 673-4066 tor return call 73 does not keep subscription records on the premises, therefore calling us only adds time and doesn't solve the problem. Please send a description of the problem and your most recent address iabel to

Windsor Me

Tne Augusta Emergency Amateur Radio Unit III sponsor tne ARRLsanc- tiontrd Windsor Hamfest on Saturday September 7, 19B5 a the Windsor ME Fairgrounds Gale donation ls 51.00 and camping is S3 00 per night or S5.00 for two nights There will t> e a fiea market. programs. speakers, commercial distributors light meals, and the traditional Saturday bean and casserole supper Talk in on 146.22 82 For i u rt her i n form at ion, conl ac( Ron Dlshman N1CMZ, 37 Marlboro Avenue. Augusts ME 04330 (207)...

Sideband Squelch

Fits inside most HF SSB transceivers Requin, human vdfce 1 i acliv.ilf1 iQivj er. .iaitc noise and esrodvnes 0 t * T W , I .rj- adfUStTOeflUI Conner I iZ-j - 1 > , Fjtv asbed and te ed 96 C-arvpieit * con-prehers v* angfli usee * -r iipfc.-oe.r evr wekai a ion-.1 af-P 5479 Jeloort. Tampa, fl 33614 (913) 8BS-3996

Bfr

The RF Waitmeter Model 8100Q A from Coaxial Dynamics, Inc. does more than provide accurate rl measurements. Testing ot transmission tines, antennas, connectors* filters and related components can reveal unknown problems and assure optimum equipment performance The 81QQD-AK Wattkit features this easy to-read RF Wattmeter (pictured here), with its optional carrying case and an array of elements and accessories. Coaxial Dynamics elements can be purchased separately for use in other manufacturer's...

Crt

SEAGATE TECHNOLOGY ST 506 5W* HARD DRIVES TI 99 4A Owners VJe are in the process of developing a VSincfrester Har Dnve subsystem for the Texas Instruments 99 4A, Please call or se > d SASE for further info. The Seagate Technology ST 506 hard disc drive utilizes proven Winchester reacnoJogy for reliable storage of up to 5 megabytes of formatted data. Some features of this very popular drive are 5 megabit second data transfer rate. simple floppy iike interface. high speed tend actuator &...

Oqm

(non nd id iito m gai if Kilo* * 2*m . 1 MHz iyp< c i envtinly 4 d< git d'spt y 1 ppm accuracy * disptay dual inputs m iir pre mps LiP 1 fUCfld A l ful i - ut bonefttouf tti *irn recata Pr ency aapT-f turns ir* CT SO into digital resdcui 'or mast any r ciwy 5 mV -.a > 50 MHz Typical sensfDvily 8d-gjt t ppm kcuW f CT'SONit 1 I139.& 5 FIA'1 racftl vtr adapter hit . ifl.05

Sep

The Uniontown Amaieur Radio Club will hold Its 36th annual Gablesi on Saturday, September 7h 13B5. on Ihe tlub grounds located on the Old Pittsburgh Road, just oft Rt 51 and the 119 bypass, in Umontown PA Registration is S3.0Q each or 2 for 5.00 There will be free parking, free eof fee. and tree swap and shop with registration There win be plenty of good food at the refreshment stand Talk-in on 147 645 .045 and 144 57 17 For lurtner information. contact UARC Ga& fest Committee, cJo John T....

Special High Speed Amateur Morse Tests

Our DOC will now provide high speed Morse tests as n permanent service lo the amateur fraternity. The mam aim is to assist amateurs to obtain a reciprocal If cense *hen visiting overseas countries where Morse speed standards are higher man m Australia. Tests 3 speeds or 12, 14 15. and 16 words per mmute were utilised during the trial period Tne following conditions are applicable to the new arrangements which are now In force Amateur licensees may apply to sit for high-speed Morse lest at any...

Psma Z

CPU a bh N-CfiarneL CPU 16 W CPU 16 tire tsli OotD Cjuj PTog InFernoJ TlrrtJf Prog PefipJnero Clock G n iatoi and Drkvep Bus Controller BOUS Sft iWHl 6M 5MH1 19. 14. 7.50 4.M S 49 13.95 6fli> 0 Aivichronou3 Comm Adanfoi Seny tbour rti> J tif iJrtfij V T mm* firaducts wd Kin Dirt tif mom This 11 only a sn Al i*mpt* af nut if. r* tfjft -out new (.ataltisj wtfl f' t tfm t tlrmnft - *V Tft tt CfiptfQf*i

Element Multiple Choice

11 How can you tell it a tube is assy 1. Sy thf lube's ornnfle g 2 By a btuish glow between the tube's cathode and plale 2) Grid-current flow In a ciass-A amplifier signifies II a normal operating state 21 Tuat the tube is t> i- ng over driven 3) That the tube is being under-driven 4 Thai the signal voltage is too tow 3) Whai company made flellatron tubes 4> Westinghouse 4 What company made hPadiotron lubes 5) Anoiher i erm for a groundedgrid ampil-lier Is i) grounded plate amplifier 2...

Match Most Antenna Feedline Combinations To Your

MATCHES dtpoles inverted vees beams quads verticals, mobife whips, random wire etc that are feci by coax, balanced line or single wire MAXIMUM POWER 300 waits RF INPUTS (selectable Irom front panel) 3-coax Vdirect. direct or ihru tuner 1 balanced line U 1 balun > nc ) or single Atre IN-LINE CALIBRATED WATTMETER INCLUDED GrftflrtviMfr, HH 0304 (603) 6 1033 lelai 8 7697 GrftflrtviMfr, HH 0304 (603) 6 1033 lelai 8 7697 ShackMaster1 puts yon- notne station in me pa m oi your nand. Wether ponable....

Ihcujoes

AT LAST4' A VEW* AFFORDABLE COMPUTER AT A VER* AFFORDABLE PRICE AT LAST4' A VEW* AFFORDABLE COMPUTER AT A VER* AFFORDABLE PRICE p0fvep*ul rjlty phqgraumaal a of memofl- -porta olt s-7* pi l is inch mocule sjnglfufv entry comuaw-lhj'hafll e 4q x y lteuhhaw tvpf- n i r(jo*ht> -zlfc based fouh chi* ot sign education ai uhnoue syntax-chegh re fll coota foh ehrofl IDEHTir-t iiPIAP'h drawing and animated olsr play-accurate 0 frtrr qt.l.lmal pl> ce3 fqr futi kan& e matl-l and chntirc...

Occ

Excn tnge electronic frtalbo messages vilh our family ike 1 belate '.'it All is Ok r Sr talk with your fa n ly irec i ly l11 ucuij i St j ckPa f cb with yt. jU in rem qre conl rol of your ho me station R epor1 raftic a c c i deni s o' disabled moionsts through your home phone while mor. tie or oonao e wttr PersonaiPatcrC All the power of your home station (and more) reaily can follow you anywhere to fina ou more about ShackMaster just write send usyourQSu or call anrt tal with us ar...

Pp

Rr-a-v-n CALL OR WRITE FOR FREE CATALOG & INFORMATION GUIDE Emphasis is on Quality A Reliability Hollywood, California 90078 213 652-1515 An liIIm hiqh qL iity Touc Tone' Encoder ioi absoiuii reiiabdily and funqtionL Incandesceni tMummation j Feature ihut makis nighl operation easy Completely seif conramed Simple 3 wire connechon - Relay or solid slate PI T autpul Crystal controlled sounder ' Wide voltage mngr VDC Wide temp range - 22* id 4 lbOT Easy tovef & liming ad Lisl-men Suppii d...

Crystal Tilted

The unreliable and noisy slide switches are replaced with a toggle switch and relay for crystal-filter selection. Fig. 5. The unreliable and noisy slide switches are replaced with a toggle switch and relay for crystal-filter selection. ing for resale Besides, the trade-in allowance on a kit-built, non-WARC transceiver is debatable to begin with, so I've had few concerns about reaching for my drill First remove the combination rt-gain control and switch lover Disconnect at I wires from...

Mpfios H S

The SB-102 sidetone level control is at A. At Br the audio transformer output is rewired for S-Oftm ourpui to speaker and phones. C shows a simple microphone pream-piiiier. and the lower cabinet shell Adjust the 50k trimpot ior full modulation while speaking normally, with the HW-101's mike gain at about the ten o't lock position. I found that shielding was not required, but a bypass capacitor on the 12-volt line js recommended, Many HW-101 owners have ihad problems with the...

St Charles Mo

The Si Charles Amateur Radio Club will sponsor a hamlest on Sunday, August 25. 1965, at the St Charles Cily Hall complex, 200 North 2nd Street, Si Charles MO. ram or shine (it s under cover) Tickels will cost Si.OO in advance, Si 50 at Ihe door Parking will cost J1.00 There will be a ftiant ilea marker commercial vendors. programs for XYLs. FCC exams. and tood. Talk-in on 146 07 67 ana 146.52. Tickets are available Irom Oenise WD0CZE, 121 Bark wood Trail. St Charles MO 63303.

Tss

The new TS-940S is a serious radio for the serious operator Superb interference reduction circuits and high dynamic range receiver combine with superior transmitter design to give you no-nonsense, no compromise performance that gets your signals through The exclusive multi-function LCD sub display graphically illustrates VBT, SSB slope, and other features. 100 duty cycle transmitter. Super efficienl cooling system using special air ductmg works with the inter -na heavy duty power supply to...

Allmode Bipolar Amplifiers

Model 5123 (2 Meter Amplifier list S235 25 Witts i i 150+ vraiisflwr HI W ats m W watts out Model 5121 (2Meter HT AmpWier Let 1285 ModH A2-11.2 Mrn-r Mult purpose Amplifier) ., List 275 1(1 Walts j i 104 Witts CM* M-51 4 (154 Meter Amplifier 30 Waits m & WmisM M Walts in 80 Wait out sum Til 35 (7lu m Amplifier) 3 Wat is in 1 Watts nit I Walt to 40 Watts out

Bluefeld Wv

Tfte East River Amateur Radio Club, Inc will sponsor the Bluefield Hamfest on Sunday August 25. 1985. from 9 00 am to 3 00 pm Activities will lake place at the Brushfork Armory-Civic Center, one mile norm of Bluefield, Wesi Virginia, on US 52 Admission will be 54 00 per p son with children under 12 admitted free. There will bo a large indoor tisa market, amateur-radio dealers computer dealers, satellite TV and various specialty dealers License exams *vill be given. Food and caved parking will...

Baud Interface

Use ynuf computar to rf*COda DTMF louchtanva. Receive .il 1 y csig r F ,i iiast i.i tryesn tfansrtinrt-j I i , ily proi am your com putiii m BASIC I- . . -icni1i- muin ilujit l trinflir, tap lav iJtyits. ,ound m ti wi il ret cnfli . cqntr il v 'ayi- uFn tfi h im Simple to y e jubt prende + l VDC ml aud ij hooi iwo to tibe RS 32-C wr talmput fin y tur tompu-v r er rP r - mp f 1A S3 C p -j 'j ra r*n pd r.'- j - w tl> -.ade -m -iB' ilCpft O n rir ITTC mir.) LED inductor Decode-A-Pad Intitudn...

Calendar

Aug 3-4 Aug 17*18 Aug 7-1S Aug 19-25 Sep 14-15 Sep M-16 Sep 28-29 Oct 5-6 Oct 6-7 Oct 12-13 Oct 12-13 Oct 19-20 Del 19-20 Nov 2-3 Nov 16-17 Dec 7-6 Dec 14-1S Spec-Corn North American UHF FSTV Con( t Late Summer Qfip CW Activity Weekend teurs frorldwifl-.' to partidpaie in ihe 26th annual NJ QSO Party Phone and CW are considered the same contest. A station may be contacted once on each band phone and CW are considered separate bands but CW contacts may not be made in phone band segments. NJ...

Cji

OG213 noncontaminaTing ii- sheild mii spec 36cfftr RG174 U mn sp 96 > S -elii 10cift. ftGTIU Shield, 7 ohm milft > ec 25c fi PG8U96 sn.etd mil sp c J29 95rt00 U. w 31 rtt RG6A U JOiir.i sh.efii 75 ohn 25e ft. RG58AU stranded mil spec 12eirt RG8X 95 Shield 14.95 1M it. or 17 ft. RG59AJ 70 copper braid 9c 1t. RG59U TOO- foil s eid TV tve- ________ lOerft. RGAU97 shield u ga < ju v Beidefra , 31& H. Oiji> RotofCatli & 18 ga. 36*m. Rorof C bieii can S-ift a t 22 ga t9cift. Ami'hertOl...

Crr

NEW * *COUNTr 64* * NEW COUNTY' 64* + * COUNTS 64 CCME WiTH TH POWERFUL LOGGING FEATURES OF CONTENDER *LUS lliAHttiout WAZ & OXCCj PLUS A SPtClAL COUNTY LOGGING SYSTEM THIS SYSTEM TAKES THE WQftK OUT OF COUNTY RECORD KEEPJNG OTHER LOGGfNG SYSTEM AVAILABLE FROM CRUMTRON1CS ARE CONTENDER PLUS II.ton dink i 434-95 (THREE DISK) M9 96 USA CA ADO ON FOR CONTENDER PLUS II C l S-K'j * r * - J. . * - m m r w w w -w -m r w ir

Cxby

Foreground, behind which is a circuit diagram ot an Mrty radio transmitter Above this is a dish antenna, plus headphones su-penmposed over a map of the world show ing how amateur radio spans the globe The stamp printed on the envelope de plcts a radio operatoi wearing head phones and speaking into a microphone This is superimposed o er lines of ama leur VK cattsigns (t looked, but mine s not there curses ) In au very colorful, and good PR for both the WtA and amateur radio in gen erai.

Directory

Jup'a Electronks, m l Sepubved* HJvd., Culv r City CA 90330, 3904003- Tudes Complet I jn IC Mp Den m i, Ten-Tec, M i ra go, Cubic. t.HfWr, o cf 4000 electronic producto f k> bbyL< rt< jx+i Ii-cian, tjwfimrfif.rt, Jsfh CB raiiio, landmobile F Un* Ekrtr ria, S62-H S verra Ray nt ure t im to r r dji lore Sew i uni amateur radw les & service. Wf feature CrnwtiodL I COM, Azrieri. Y ma, Ten Toc. Saut & enany more. Staffer R*dir> . Inc., 1775A S. Winchester Blvd., Campbell CA tfSOOfl....

Element Truefalse

A lobt diode are the plate and anode. when used in a receiver. have a very low plate-io conlroi-grid capacitance. are characterized by their soil orange glow 7) In an Inverted tube, _ _ the mput signal and the control grtf dehv* ersthe output signal anodes operate opposite a single plate.

Entries

Logs must be received by Oclot> er 10 and should contain band, dateMme in UTC. caUsign, exchanges seni and re Gfcived, points multipliers and hnal score Use a separate sheet for each band and enclose a summary sheet showing the scoring, classification, callslyn, name, and address. In the cas*1 of multi operator stations include Ihe names and cailsigns oi all operators involved Commenis will tn vwr> much appreciated by the contest committee Send Fogs to SARTG Contest ft Award Manager Jorgen...

Hancock County Oh

The Findiay Radio Club will sponsor the 43rd annual Findiay Hamfest on Sunday, September 8, 1985. trom 6.30 am to 5 00 am, at Ihe Hancock County (Ohio) Fairgrounds Tickets are S3.00 in advance and S4 00 at the door Tables are & L 0, and outdoor flea markei spaces are 3.00, Talk-in on 147.75M& . For more information. contact the Findlay Radio Club, PO Box 587. Findlay OH 45 39 The 6o ling brook Amateur Radio Soci ety will hold BARS Hamfest 85 on Sunday. September 8H 1985, at Santa Fe Park,...

Uer

'I IV FNER A * ZT6-MPSA20 R 5 * 276-2009 7473' AS * re-1803 Fig. 1(al 25-kHz crystal calibrator 42 73 tor Radio Amateurs August, 1985 'I IV FNER A * ZT6-MPSA20 R 5 * 276-2009 7473' AS * re-1803 and added a divide-by-four flip-flop 1C to the output see Fig, 1(a), To install the new circuit,, first disable the old V17B calibrator by removing R217, R218, C218, C219, and CR201 from the bandpass board Leave the 100-kHz crystal tn place, but isolate the foil patterns around its pins Rec cie the...

Hdlc Converter

USA AX.25 is the AMRAD approved digital format STANDARD used on amateur pack-el radio networks._ Assembled,-Tested. No ICS. 90day warranty Package of all ICs except 2-2716 EPROMs 80,00 System Tested 4 5 x 6' board compete with all 1C s and programmed EPROMs personalized for each purchaser. Requires only single 8 10 volt V* amp power 1 year guarantee of hardware software AX 25 standard RS232 serial ASCII at any user baud rate.RS232 HDLC for 202 modem used tor AFSK or direct to RF equipment for...

Iij

Fig. 2, Unmodified oscillator doubter. Fig. 2, Unmodified oscillator doubter. 5-UP MOO F CA77CW FOfl CONVERTED CBs Add 5 kHz to the standard 10-kHz steps of a CB-to-10-meter conversion. Parts on the schematic are numbered according to the Tedefex 6000 or 7000. but other sets such as the Midland 19891 and similar GE rigs have also been successfully modified. Adjust the two new trimmers so that the rig now receives and transmits 5 kHz higher on aft three modes, The three new transistors can be...

Made In

Covets tOOMH lo 139.999 WH m i kHz step* a.in ihumbwft& < H dial Accuracy - 1 part per TO million iii all frequencies - Internal fm a ti u stably irom 0 lo tOO WH a 1 kHz faie External FM input accepts tones or voice * Spurs and noist* at least GO dB PeicjA carrier * Output adjust Die from 5-500 rriV 50 Oh s * Operates on 12 Vdt a ' i Amp * Available lor immediate delivery - 429 del *ered * a a a-on accessories available to extend freq range, add infinite resoiuiion, AM and 3 preciston...

Memo

You've been asking for the most compact and advanced full-featured HF transceiver with general coverage receive on the market. Measuring only 3 7 inche It's a high performer on all the ham The large LCD readout and con- bands, and as a general coverage re- venrentty located controls enable easy ceiver, the IC-735 is exceptional The operation, even in the mobile environment iC-735 has a built-in receiver attenuator. Controls which require rare adjustment preamp and noise blanker to enhance are...

Mfj Multifunction Mfj Tuning Indicator

Greatly improve your RTTY copying capabilities. Add a crosshair LED Tuning Indicator thai makes tuning quick, easy with pin-point accuracy Add mark and space outputs for scope tuning. Add LEDs lhai indicate 170. 42b. 850 Hz shifis Great for copying RTTY outside ham bands. Add sharp mark and space filters to improve copy under crowded weak conditions, 170, 425, 860 Hz shifts. Add Normal Reverse switch to check for inverted RTTY without retuning. Add output level control to adjust signal into...

Mhm

Send 44< p stamps for full details of our VHF UHF items. Prc-sdecior filters Pre-amphfiirv Anicnnas Low-pass fillers Tran eriers Vaiactor inplers Converters Spectrum Iri relational, Inc. Pom Office Box 1084S Concord, Mas*, 01742 USA menter's box(270-233). However, unless you are an experienced builder 1 recommend that you gain some working room at the expense of using a slightly larger enclosure. If the Auto-Fox is to be used with only a single call-sign, you may want to save the cost of the...

Pr Counter Preamp

Tfio .Ji' Hot measuring rriin signal horn H) to 1 0W> MHz iial n ab oarn * 0NI-. Cijnrea& ri * -it forshii . g RF * -dea1 r,r. range Ol yo.ip prflSBfd OunlrH 10 I OMKj 2 agepream * -.idew H3 Ciritr> '. rtspiiy.iy 25m M t i5 MHJ 9KC COnr*ctOfl anv i ar tOuntfr r,r. range Ol yo.ip prflSBfd OunlrH 10 I OMKj 2 agepream * -.idew H3 Ciritr> '. rtspiiy.iy 25m M t i5 MHJ 9KC COnr*ctOfl anv i ar tOuntfr -- * r 4i a AA p i

Oklahoma City Ok

The Central Oklahoma Radio Amateurs CORA) will sponsor Ham Holiday 05 (HH 05 and the AflRL Oklahoma State Convention on July 26-30. 1905, -il the Unciiln Plaza Inn, Oklahoma City OK. Pre-ragistra-Hon will be S3 00, S4.00 for each non ham family member Registration at the door will t* 10.00 Acidities witl nelude c- 'T-mercial d sptays,1 f'ea markel on Saturday only), QCWA breakfast, MAftS, SMIRK, Oklahoma Repotiier Society, license exams. and various technic and nontechnical forums For more...

Priori Tv

The TR-7950 7930 remembers frequency offset, and optional subtone channels. Memories 115 are tor simplex and normal repeater operation. Memory pairs 16 17 and 18 19 are for fcodd-ball splits. Memories A and B store upper and lower band scan limits. The radio beeps when memory channel 1 is selected. Covers 142.000-148.995 MHz in 5-kHz steps. Repeater offsets are automatically selected in accordance with the ARRL 2 meter band plan. The front panel OS key may...

R

500-0hm carbon or cermet pot (see lext) Circuit Specialists. cat. 31VA205 SPST submini toggle (Radio Shack 275-324) SPST subrninr toggle (RS 4275-324) Std. 1 4 phone jack, 3-conductor (RS 274 312) Std, 1 8 mini phone jack (RS 274-251) Coaxial power jack (RS 274 1565) Type UG1094 female BNC connector (RS 278-105 Type UG1094 female BNC connector (RS 278-105) Coaxial power plug (J3 matching) RS 2744567) Knob For 1 4 shaft (RS 274-407) Be2el (see text) KPA5 Video Xmitter board with one crystal...

Renato Costa Ptaj

During my trips to northeast Brazi- due to my fob, sometimes I have a chance lo see 1 Hands who I never (bought I'd meet personally. One of them was Renato Costa PT7AI He is retired (and very proud because he Is now a great grandfather) Renato was licensed only a few years ago. and since then he has become an avid DXttv He has 142 countries worked, most of them confirmed- He's a very charming person and don't iose the opportunity of a QSO when 68 73 for Radio Amateurs * August, 1985 Africa...

Qrgjr Award

Sponsored by the Boy Scout Amateur Radio Group Joao Rama I ho, I he GRGJR Award ia available to ail licensed ama etirs for confirmed contacts 4th 3 l three) GRGJR members and 5 (five) different Bra zHIan prefixes PYt, PY3. PP6, PY7, PS , nlc.)r Contacts must rave been made after March 1 1984, on any amateur band and in any mode No QSL Send GCR fist of stations worked (call date, time band mode, and report) and 10 IRCs for mailing expenses to GRGJR Award. PO Bo* 466. 09500 Sao Caetano do SuL Sao...

Psz Audio Multiplier

Im- PS 2 is handy high resoiguors nuJm ieioiuif& r measuramertta, multiply U m frv-, 'H-ftn lor '-L O' e iriSftswtfnWt * HU f rflt by TOC Kz frt tlulrar 4 Trv- il vEful'-fi k s < -. iv -tian 300 3 sai nb ga * limas 1 9 d its gaii Tjicator a a ha d * 25m V i -50 UH typ cjJ siiivtlv fQMHz rimDiiw for WWV calibration * 1 ppm Atcufacv CT-90 kit . . * * S129.95 V-1 0.1 PPM own tniiL-bose SM

S

See sapient** 1964 issue o* 73 tor timex rtty articie imjEAOHiof fl c SJ EA OP. 10 FOfi IK > H SA OP 10 FOB t U EAOPIi fOH LV f- EA OP T& FOR A0 X Hfl EA Oft IC F OH MAOfl IT flt EA Oft Tfl FOH HUD TIM B0 4A JI. MlGfiOP CLOCK G N AH PfllVEH IV 1MB AiliANL nilCflO-P COLOR flAMitti AND UtiPU* * fl.H wrTJVQAfl *6 KEVS MEASURE * 1& (t Kj Ii

Special Features

SOLID STATE ELECTRONICALLY REGULATED FOLD-BACK CURRENT LIMITING Protects P wer Supply from excessive current & continuous shorted output. CROWBAR OVER VOLTAGE PROTECTION on all Modeis except RS-4Ar MAINTAIN REGULATION & LOW ftlPPLE at tow line input Voitage HEAVY DUTY HEAT SINK CHASSIS MOUNT FUSE ONE YEAR WARRANTY * MADE IN U.S.A.

Talk So Thev May Walk

The Kansas City MO Ararat Shrine Radio Club (WAONQA) will host Its second annual talk-in on August 3-4, 1985, for the benefit oi the Crippled Children's Hospi-tais. We will look lor you on the air from 1fr 0 am io 10 ) pm CST We *id be on the lower tO kHz of 80. 20. 40, and t5 mfr ters as *eii as the 40-meter Novice Dand We will offer a two-color certificate w th your call and name Send a large SASE and S1.00 to QSL Manager, Mr J V Foust KA0GLJK, 5240 IM Palmer, Kansas City MO 64119

Tr Accessory Catalog

Communications Specialists has announced the availability of a complete catalog of all accessories for use with the TP 720 hamj-heid air band transceiver. Sine* the TR 720 was first Introduced almost two years agor Communications Special ists has developed a toiai of 23 differeni accessories to improve me convenience and utilization of the radio. For a tree catalog, wrlle to Communico tions Specialists, Inc., 426 West Tafr Avenue, Orange CA 9mS (BOO -854-054 7 or (714)-998 3021

Washington Dc

The Personal Comparer and Standard Compute* Interfacing tor Scientific Instru ment Automation Works nop sponsored by Virginia Techt will be held August 22-24 1385 m Washington DC, The cost is 450 for tne three-day session. This is a nands-on workshop, with each participant wiring and testing interfaces The course will tie directed by Mr David E Larsenand Dr. Paul E Field For more information contact Dr. Linda Usffel, C. C . Virgima Techr Blacksburg VA 24061, i703) 96t-4546

Woooem Block

CftPAtlTQA ft SEMuLT IS SQUEEZED OGETHfP BY RUBBEH BANDS I HOT LOWER PI ATE SHQWN 1 - 0N Thick Ness PUAIW SUITING PaPEfl fOH OlELECTBlC. u TAL C PJCHM PUTE ZfttOLMW Ol CUT PR M TiM C4N. A .L EDGE' CAREFtA-LT iMOOTHtD WITH FILE CftPAtlTQA ft SEMuLT IS SQUEEZED OGETHfP BY RUBBEH BANDS I HOT LOWER PI ATE SHQWN 1 -

Yes

Start my no-risk subscription today and send me 12 issues of 73 for 19.97. I'll save 33 off the newsstand price CHECK MO Bill Me (please make ihr i payable ro 7J> Cjiudj it MexKtr SZl. T, I TMT on3v, US fu A Aa n on US b-mi Fnfeiijn vift.icr 39.9 , I year ontyN S fumk Jrjwn cn US bank Fotfdgn mrmail, plrfl* in quirt. I'lrp e allow ti- wrtlt* for delivery Jim White K 1ZX'4 (right) the 1963 ard 98 Ar' at fto Rum Jim White K 1ZX'4 (right) the 1963 ard 98 Ar' at fto Rum flyman Oblasts. etc Of...

Luxor Downconverter

Luxor North America Corp has introduced the 9726 Low Noise Block Down-converter (LN6) for use wlih Luxor Stock Satellite Receiver Systems II combines a low-nois amplifier (LIMA) and block down-converter in one compact um image rejection at dfi minimum and high-Vequency stability in blocl- conversion produce low noise, sparkle-free video. Local-oscillator stability with a very low fre quency variance of Loss than 1.5 MHr means high resistance lo temperature change. Vorfft America Corp . 600 08th...

Theory

Here are some equations for the calculation of swr see reference 2. (1) Swr (1 +p t 1 - p), where p reflection coefficient and (2) p n where E forward power (Watt) and Er reflected power (Watt). (3) Thus swr (v f + - VE r). In terms of impedances, the complete equation for swr is (4) Swr (V(R + Z)2 + (XL - XJ* + V(R - ZJ2 + (X, - Xc)z) divided by (V(R + ZJ2 + (X. - X - v(R - Z + (X, - (5) - (ErJswr +- I J fswr - l)2. 2x x 3.5 x 106 x L x 10* - x 3.5 x 10 x C x TO1-) - 0. Here we have two...

Am Help

We are fiappy to provide Ham Help tist < ngs free, on a spac& aveitabie basis We are not happy when we have to take time from other Out tes to decipher cryptic notes s craw fed itte& bfy on dog-ea ea ocsfCards and pdds ed scraps of paper Piease type or print your request neatly'), double spaced, on art 87 ix 1 sfieer o paper and use upper and lowercase let ters where appropriate, Also, please make a 7 look tike a not an which coufp be an ef ot an eye and so on Hara as ft may be to pe...

Jt

.(jg -> NE* W ft TO V0C > TO VQ* AMPLIF'EH (fiO CHASG Fig. 1(al 25-kHz crystal calibrator 42 73 tor Radio Amateurs August, 1985 Fig, 1(b). Modified function switch. wires from the hfo crystals to a distant switch, 1 decided to use a small relay, as shown in Fig. 2 The new 23.895MHz crystal and reiay were mounted on perfboard and attached to the center shield near the crystal board (see Photo Dl The crystal is Heath part no. 404-279. A toggle switch on the rear panel controls the relay,...

Antenna Yha-44d

Close-up of tripod-socket installation. .See fexf for details. The 5000hm video-level pot (R1) must be shunted with a 100-0hm resistor. A 100-Ohm pot is preferred for this spot but is hard to find (Fig 1). An antenna can be pul together quite simply. First, a 6-1 2 * length of 22 rod is soldered to a BNC connector Next, this is stabilized Photo F, Panel layout. Ihe bezel (see text) shields the switches from accidental tripping. with an epoxy filler. Presto, a serviceable antenna This...

Eme In Czechoslovakia

In the fast ARPL EME contest stahon OKIKiR mjde 45 contacts altogether and by 36 multipliers gained 162,000 points In the 145-MHz band, the operators of the station used a 4 x 10 yagl antenna (accord log to PAGMS> and ihey had contacts with 0L80AT. SM2GGF K1WHS WAWXN 7. K& aftQ and YU3WV and thev heard 25 other European and North American stations. On 433 MHz they made contacts with JA6CZD, G4EZN. F1FHI, HB9G, YU1AW. DL9KR N4GJV WA1RWU, N 9 A B. WB5LJJAH F2TU. K2UYH, I5MSH WBGTEM. K06R...

Namiromcs inc

65-D MOUL ROAD HILTON NY 14468 Phone 716-392 B430 Hamtronics* ft * ngttMd tiadmnart R144 R220 FM RCVRS for 2M or 220 MHz. 0.15uV sens. 8 pole xiaJ filter & ceramic filter m i -f, helical resonator from end for exceptional selectivity. > 100 d B at 112 KHz, best available today. Flutter proof squelch AFC tracks drifting xmtrs Xtal oven avail. Kit only 138. R451 FM RCVR Same but for uhf. Tuned line front end, 0,3 uV sens. Kit only 136. R76 FM RCVR for 10M, 6M. 2M< or 220. As above, but w o...

Prspg

PRS-475PG Is a complete PCB repair system which features a microprocessor-controlled plating cenlcr that 5 capable of depositing 50 microns of gold lor mii-spec edge-connector 'epair The PRS-475PG also includes a desoldering handpiece soide iron thermal tweezer with 3 blade sets, reftow solder toot with practice Kit. miniature drilling system, and circuit repair kit For more information, contact Automated Production Equip mem Corp., 142 Pecan ic Avenue vedforo NY U7G3 (5l6tfS4 M97...

Yap

PRESIDENT REAGAN is indirectly backing amateur radio in a big way through the Young Astronaut Program (YAP). YAP, a group which consists of at least 50,000 schoolchildren enrolled in nearly 2,000 chapters nationwide, is part of the White House Office of Private Sector Initiatives. YAP Director Dr, Kerry Joels met recently with ARRL Development Manager Bill Laz- zaro N2CF to talk about integrating amateur radio into YAP, The discussion centered around linking YAP chapters with local...

Great Britain

Jeff Maynard G4EJA 10 CAi rcrtrte di Widnes WA8 9RP Cheshire England Like most Oi Europe, the UK is keen to promote the adherence to band pians. particularly m the VHP and above allocations. This Is not to impose some kind of bureaucracy on active amateurs but to ensure lhat good sense prevails and ihat everyone ha s a fair share of the space available. There are. of course, inose vociferous minorities who cry foul at any attempt

Charlotte Vt

The Burlington Amateur Radio Club, Inc., will sponsor Hs annual BARC Inter-nation Hamfest at the Old Lantern Camp Grounds In Charlotte VT on Saturday and Sunday, August 10-11, 19 5. Admission is 4 00 per person tor boih days, with children under 12 going free- Flea-market space outdoors wltt cost S2J0Q Flea-mar-fcet space indoors will cost S5.00 For informal ion on overnJghi camping, contact campgrounds. Activities will Include an RiG model airplane how and a CAN-A M tug-of*war Talk-in on 34...

Instant ATV

W8CHK breaks through the mystique surrounding fast-scan television. You won't believe how easy it can be Broadly speaking, this aspect of television will remain untouched because it isabsoluteh illegal to be active in it without an appropriate license. Most readers, however, will know that A5 emission (video) is perfectly legal for any holder of a Technician-level or higher amateur license with privileges above 420 MHz. But of the large number of amateurs qualified for operating in these bands,...

Israel

Negev Mobile Post Office 85530 Israel THE BAR LLAN HAM F EST THE OLD-TIMERS REMEMBER On Saturday evening. March 30, 1985. the Israel Amateur Radio Club held its annual hamfest and social gathering In the banquet nail of Ihe Bar Man University near Tel Aviv. Among the highlights were a buffet, a display of the latest gear from the Israeli distributors of Kenwood and Yaesu, a laffle of gear ranging from handletalkies to computer accessories, and the awarding of prizes to the winners of the recent...

Scope That Signal

Are you overmodulating Is your linear linear Find out with a station monitor you've built from scratch. Do you worry f do When I operated SSB, I always used to worry about whether my r g was adjusted properly to put out the best possible signal, My ngH like many transceivers today, use a linear Stage for the final amplifier regardless of the mode of operation, be it SSB or CW, and the oniy instrumentation provided is the ubiquitous panel meter. In addition, I had a direc tional couplerfor...

The Seiko Data

As amateur-radio operators, we nave a unique habit of exploiting the capabilities of a variety of electronic equipment. From modifying a surplus radio to converting a CB transceiver for Ten-meter use. we are constantly adapting and applying techno ogy to meet our needs. However, nol all equipment requires modification to be useful. A perfect example of this is the widespread use of microcomputers In I ho ham shack to handle the laborious task of log keeping, QSLmy. and other paperwork A ne...

Multiband Sloper

ALSO CUP Ol ES limited Space anmnnas Oulilwdkng tiformtncDcr W INriinitnn Is wolllnownl Nawen- cy mullib nri BIG SIGNAL r pt iur Aularnilic bandiwtlcfiing Vorv I low SWR'Com l Ml-3kH pow r Compact- F LLT ASSEMBLED I ro fAur tp -itltd Cdnlat i 9vACt IChbiri lt j - E gt T msT T - T r y flr ru ' r iiliuCliifli - ' if l '1 1 ltcl fC plrt 44MND SLOFBt - 40 H, A0,30. Of 3DM frO U long J 4 ft tJ i - H 4 lt W M - Y 9 HO-THAP OiPOtE 0 SO 40 113 It long 1 M h trtw mu - I M 1BAM SJ'JU fc SAVfcH niPCH.E...

Hitech Styling

What can you do with a pencil, a razor blade, a paper clip, and a hank of wire Why, build a radio, of course Penn Gower W1BC 459 Lowell Street Andover MA OlflTO Hams with TV1 problems often learn the hard way how poor metal connections can generate harmonics. Two conductors making partial contact, in gutters for example, can rectify and re-radiate as harmonics part of the signal from a nearby transmitter What few newer hams realize is that the same phenomenon was crucial to the operation of one...

Hurricane Tracking Chart

ONjianiJl'd 8 with I lkj't j I l 11 n y nupSi and data on hum Aries coring ihe AeLmk i ,iull and Piic ifk cmisr Send fr T your 'f gt py belmc the ilcm-i Kegm. Please St-nJ SELF ADDRESSED STAMPED fcNVELOPE ukh WC return postage to HURRICAN1- v HAR1 PA . BOX 10 J'HAM East Milton, MA 01L86 Tii ir i l re . ihr Kill i liKc C.lill t thi . ajjfr D-_ Jhr -nJ v J T V 1 t tr Interference Location Stuck Microphones

Model Ac

Fully Assembled 52 OHM Only 90 feet long SWT less than 2 1 from 3 5 thru 30 MHz. Average SWR 1 A1 Con be installed as flat top, sioper, or Inverted V Used the world over in government amp commercial communication Ideal for all operations - amateur commercial VLARS- any frequency from 3,5-30 MHz PLUS 3 on ShippJng and Handling ALL OUR PRODUCTS MADE IN USA Quality Communication Products Since 1932 At your Distributors. Write or call 10 Canal Street. Bristol PA 19G07 A space age system that allows...

Portugal

Luis Miguel de Sous a CT4UE PO Box 32 This time you will read about a Expedition organized by a few Portuguese hams during the lasi WPX contest, In March. It was to the island of Berienga, a beautiful place surrounded by water which is nice and clear there is not any sort of pollution down mere Wt1 also cannot find any medieval architecture Hl , but an old but nice lighthouse can be seen. Our thanks to Luis CT4NH who kindly sent us the following report Myseii and CT4UW. we've been thinking...

Iso Tip Electronic Technician Drill

W hl Clipper Corporation has introduced a completely redesigned version of its popular JSOTtP high speed electronic technician drifl. The 13.000-rpm drill features an improved3-jaw chuck. The operator can adjust thu 3- aw chuck to virtually any size aperture to accommodate any drill or burr with a shank diameter of up to .125 lt 1 8' - Weighing less than 5oz me drill's com pact length allows it to be used in confined areas and thin cabinet Tie drili is ideal tor prototype development,...

The Field Award

The Board of the Swedish Amateur Ra dio Society. SSA. has ta en the decision io issue The Field Award to licensed radio amateurs for verified contacts with, and to shortwave listeners Tor verified reports from, other radio amateurs In a number of fields. These fields are defined by the Locator System adopted by IARU as of January 1, 1985 The Maidenhead Locator Contacts on o afte- this date are va'id for The Field Award. The Field Award is Issued lor verifica tlons of fields in four classes...

Kadmt

Editorial Offices Pine Street, FefefbofpUQft NH 0345a. phone-. 603-924-9471 Advertising Offices Firm Staeei Ffcterbofough. NH G345S. phone 603-924-7136- Circulation Offices Elrr street Paler borough NH 03456, phone- GQ3-924'W71. Manuscripts Conlrlbuiions in the form of manuscript with drawings andto photographs are welcome and will be considered for possible pubHcaiion We can assu.ne no responsibility tor Loss or damage lo any material. Please enctose a stomped, seff-addressed envetope with...

Tuning

The Panasonic Command Series With double superheterodyne tuning, you'll hear the world loud and dear Now it's easy to listen in on the world's hot spots. Both the RF-B600 and the RF-B300 are packed with With the Panasonic RF-B600 Command Series features and buift to go anywhere. FIWLW MW SW receiver. The Panasonic Command Series offers something Its advanced microcomputer-controlled tuner lets for everyone. With equipment sophisticated enough to you preset up to nine different frequencies. And...

Mosfet Repeater Ample Feers

Mixlel 4111 2-Meter Repeater Amplifier 20 Watts in KX Watts out 10 Watts in - KJWatootf gt Watts m 30 Watts Hodd 4114 2-Meter Repealer Amplifier La- 1365 2 Waits m 10.' Watts out I Watt m Ki Watts m Model 4112 lb, Meter Repeater Amplifier List 11 gt Waits in 70 Watts out MudeJ 5142 70-Cm Repeater Amplifier list 1375 30Wansi i 10 1 Waits out 10 Watts 1 - 40 Watts For more information see your local dealer ortalJ factory for details. Post Office Box 8979 Newport Beach, CA 92658 Telephone 714 760...

New North American Dx Record

On 1296 MHz may have been set by Ott Rebel W4WSR and Wes Atchison WA5TKU. Ott and fellow experimenter A Ward WB5LUA tried for nearly a year to bridge the 1073-mile gap between their stations and establish a new terrestrial 1296-MHz record. Not until June 3, 1985, did favorable conditions appear. In Ott's words, I commenced our sked at 0100 UTC and stood by. Al came back with such a signal that I thought it was a local trying to break in We immediately switched to SSB and exchanged 59 reports....

Publisher

I he SS-32HB is a new hybrid sub-audible encoder plucked from Communications Specialists' Hothouse. It has grown through a cross ol the time tested SS-32, the subminiature SS-32M and space age micro circuitry. This programmable 32 tone encoder measures a scant .5 x 1,0 x . 5 inches no small wonder it allows the addition of continuous tone control to a bunch of hand held transceivers that tack space. Why not snip your problems in the bud. with our last, one day delivery and attractive one year...

Spreadspectrum Communication

Has been approved for amateur use on frequencies above 420 MHz, but there is a catch. Although the final ruling has been published, it will be one year before any transmissions will be allowed, This is, according to the FCC. in order to give the amateur community time to develop initial voluntary interoperability standards as they have done recently in packet radio. In other words, time to get our act together There also will be a limit of three possible spreading sequences so that monitoring...

Give A Hoot

As a rag chewer, I am continually appalled by the habits of contesters Day after Jay I use the 4t gt and 60-meter bands and take care of them as if they were my own. Then suddenly a contest ee end Bf nves and the bands are to wall wlih com esters who use the bands for con ests onty and often treat them unkindly I can understand the frenzied pace during a contest thai would prevent the avid users from keeping things tidy, but what about later The day following a contest is the most depressing....

Poland

Jerzy Szymczak 73-200 Btalogard duczka 2 3 Pofand At the beginning of September, 1964. the central radio station ot PRAA Polish Radio Amateurs Association began to transmit broadcasts of information and 10 establish contacts separately from rhe Radio Information Bulletin of PRAA. on every Sunday at 1030 local time on 3700 kHz SSB and 7060 kHz AM Furthermore, informative SP5PZK broadcasts are trans milted every Wednesday at 1700 local time on 3700 kHz. Broadcasts of PRAA include the latest news,...

Radio Transcription Discs Want

W7FIZ Bo 724-WG. Redmond WA 96073 0 2J BNB347 USCG licenses and 6-month endorsement required For sea-going employment. Excellent money and fringes for technically qualified person. Send resume and copies of licenses lo Box MH 2493, 8iG Sevehih Ave . New York MY 10019 BNB34Q CABl E CONVERTERS, Lowest price. Dealer inquiries accepted. Quantity discounts Free catalog PG Video Corp 61 Gatchell St D pl 73 Buf lt ak gt NY U21Z BNB349 ANTIQUE RADIOS, schematics tubes, and...

The Heath Kit

Heathkit 7800

I've been a ham now for almost 25 years There's a let of enjoyment goiten from Talking to new and old fnends on the ham Dands However as with any other hobby, a person craves to branch out and expand his or her horizons In my case, J thought It was Lime to Iry shortwave listening again as I had when I first started out. Since all my old shortwave gear Is long gone, I needed something new to gel back into generai-coverage receiving while at the same lime noi spending a smaif fortune. Heath's...

Iigooi

Winding Core Ferrite Transformer

Pulses, relatively little sweep voltage will be developed Hence, tor a given trigger-pulse interval, some reasonable capacitor value must be chosen The values shown are about optimum for the trigger pulses used hcrer and the sweep-generator outputs are each about two volts peak Equalization of CR1 sweep widths are obtained with R4 and R5, and a sweep output of about 20 volts peak is produced by the U12 amplifier stage following the generators. As mentioned previously, the circuit of Fig. 2 is...

Icom

Hand-held Transceivers Deluxe models Regular Options - continued Regular SALE CF-1 Cooling fan for PS-15 45.00 EX-310 Voice synth for 751. R-71A 39.95 SP-3 External base station speaker, 49.50 Speaher Phone patch specify radio 139 00 129 BC-I0A Memory back up 8.50 1-2 Relay bo wrth marker 34.00 AT-100 100 8 band automat ant tuner 349,00 314 AT-500 50Dw9-haml automate antluner 449.00 399 AH-1 5-bartd mobile antenna w tuner 289.00 259 PS-30 Systems p s w cord. 6 pin plug 259.95 234 0PC Optional...

Dick Smith Electronics Uhf Wattmeter

Dick Smith Electronics Australia Kit

I'm gomg out on a limb and pred lt cl that one of me best things to happen to electronics in the US this year is the emergence ol Dick Smith Electronics. Incthe California-based arm of Dick Smith Elec-ironies Ply Ltd. ol Australia. Tnis unjque io pany offers a full line of electronic parts, kits, and pre wired assembles us-jng a marketing and advertising style that is sort of a cross between the old PoJy Pakg catalogs and Radio Shack. According to their sales literature, the company has been In...

Mhz Portable Logicscope

The Log cScope- M 136 from Jensen Tods Inc combines many of the features and capabilities of sophisticated logn analyzers and oscilloscopes t is Hflht-weight .25 lbs , compact 9 25 , IS , V75 , and lasl 10 MH T The instrument was designed for servicing digital eiec ironic circuits and equipment and Is es pecially well-suited lor Held work LogtcScope jepiaces the conventional CRT with an array of 400 LEDs whicfl per 77te LogtcScope 136 from Jensen Tools 77te LogtcScope 136 from Jensen Tools mits...

India

M ss ft Sub ft n 3 Thlru-VI-Ka Road Posf flo 725 Madras 600 006 India A small village a hundred rrmos away Irom Madras, served by n feeder-route bus Service nao the unique privilegedhaving been the destination of the largest num ber of hams aver lo have visited an Indian village. This little place Chat ram can not be found even on the district map, but l is known lo most 40m operators, DX and Indian, as the home of fndia's first and Only blind hamr VU2TTC Chakravarthy, popular on the band as...