Info

IBM , COM I& MCommodore Tech Ho Code Lame Code Progrsm rant tun* all the authorized FCC questions and ara try wrtl in test i fu r i u ia fdtrmalic *jnttho sn diagrams. and sampleU- for pav iriK t> m trlmujun NoCodflicrnw. S24.9S IBM97 Amateur Radio Pari 97 Rules tn (.ludes updajcd. ret iscdCoituni'.siort' , kuk- . SL-p-lcmbcr 30.19B9J S V itJt IBM comp tale only 9.95 twr .the definitive guide to iinmtcur piicket opera non Gwyn Heeilv WIBEL Onl IIS.00 I0N0I U.S. Repeater Map book by William...

Meter Wave Ryder

A QRP tube transmitter powered by 12 volts DC, If you hve been looking for a new project to build that has a nostalgic quality mixed with a touch of today's technology, then look no farther because our 40 80 Meter Wave Ryder CW QRP transmitter offers these features and more. The transmitter's circuit design is similar to the singie tube crystal controlled QRP rigs that were in vogue during the fabulous '50s. A 3A4 miniature power amplifier pentode tube is connected in a crystal eontrolled...

Kenwood Electronics Canada

BOX 1075.959 Gana Court Mississauga, Ontario, Canada L4T 4C2 Spec * > tions am leaiures rre sutyect jg change wtnout nohce or gatoon Comptete sefv ce manual afe i ar able for a It Kenwood transceivers and most accessor tes Amateur Radii> enthimasts Joe R lul M Shaun use their PC to discover the new visual world of Kenwood's HamWinddivs. 1 HamWindows is an all new concept in the world of Amateur Radio. eight full color windows including transceiver control, station log, world almanac,...

MFJ

MFJ has a full line of dummy loads to suit your needs Use a dummy foad for tuning to reduce needless (and illegal) QRM and save your finals. MFJ-260B, 28.95, VHF HF. Air cooled, non-inductive 50 ohm resistor. SO-239 connector. Handles 300 Watts. Run lull load for 30 seconds, derating curve to 5 minutes, SWR less than 1.3 1 to 30 MHz, 1.5 1 to 150 MHz. 2V*xHx7 in. MFJ'264, 59,95. Versatile UHF VHF HF 15 KW load. Low SWR to 650 MHz. Run 100 watts for 10 minutes, 1500 watts for 10 seconds. SWR is...

Ocean State Electronics

Frd, 5546 Cathedral Oaks Road, Sama Barbara CA 93111 805-367-4859) sells tfecais. note pads, and jacket patches featuring a picture of a donkey baing hoisted by a helicopter The cap lion is iJWe Save Yours Get it Hams in search and rescue are often heroic T-hunters. But there are plenty of other ways to use RDF to help the public. In Homing Jn for January 1992, wrote about hams rn Arkansas tracking down a stuck public service transmitter. This month, I have two new incidents to report, if the...

International

The Slovenian Amateur Radio League is striving to widen the ham spirit in their homeland according to the guidelines of the International Amateur Radio Union (IARU), and thus wishes to contribute to an even greater success of this world movement. For additionai information please contact Zveza Radioamaterjev Slo-venije (Slovenian Radio Amateur League), Lepi pot 8, YU-61000 LjubE-jana, Slovenija. Tel ( + 38-61)222-459. Mate VE3TJA And Tom VE3VKE toured Slovenia, Bosmla-Herzegovina, and Croatia...

Id Automatic Voice Identifier

The ID-7400 is an automatic voice identifier for use on any transceiver or repeater. The ID-7400 records your voice ID, then automatically transmits it at the proper time, on the release of your PTT switch., Two switch selectable IDs can be recorded and stored in non volatile electronic memory. Records from the station microphone. Installs between the microphone and the transceiver No soldering required. Uses 8 pin mic connectors. r INTERCONNECT LONGWOOD. F1 32750 SPECIALISTS INC. TOLL FREE 800...

Special

HtfocN Portable Scopes DC to 40MHz. -C KJrtnej, DC offset function. Alternate magnirwrtuncliofl V-525 CRT WuadoiJt, Cursor Mess S995 - zomhj iiatflyici ewflep,__s& as 5 Simple Pulsed Crystal Signal Source 6 DigiMax D1200 Frequency Counter 7 An ATV Downconverter with a Difference 9 The JPS NF-60 DSP Notch Filter 15 A Remote Field Strength Meter tWs Vqt J. C iirefil. Caji cifon, T-TP iomn 0 i o' Ca doc rto ne t M*i r .i-JT CM-15M pl t.OC ui 6 hthitkuey

Simple Pulsed

Once I J Irtish a project. I'll use il on the air for a few days, then I'll stan on the next project, J build and operate a lot of very simple rigs. My receivers arc usually direct conversion or regenerative , and i sometimes have a hard lime just finding the ham bands, let alone staying inside them. When i musing a crystal controlled transmitter this isn't a problem, bui I sometimes use simple VFO controlled rigs like a Heath HW-7 or a home-brew transceiver with...

Transistors

One area which caused some minor confusion was the crystal oven indicator. On some days, the oven LED would go on as soon as I switched the counter on. At other times, it took 30 to 40 minutes for the LED to come orv Fearing I had an intermittent crystal oven, I called DigiMax, and a quick chat yes I talked to a real, live, knowledgeable human being on the first try put my concerns to rest. On my older equipment, the oven indicator turns on whenever the heating elements are energized, showing...

Circle Oh Reader Ervfcecaro

73 Amateur Radio Today March, 1992 25 choice, the designer of the do w neon verter had to decide where in the spectrum the downconvener LO. would be placed It is difficult to build oscillators in the UHF spectrum, so some manufacturers decided that the LX . should be placed on the low side of 439,25 MHz, or 439.25 -61.25 378 MH , The other choice would have been 439 25 6L25 500,5 MHz which would The lower frequency L, X choice was also influenced by falsely concluding that the upper sideband of...

Model Pta Linear Amplifier

The Barker amp Williamson PT2500A Linear Amplifier is a complete self-contained table-top unit designed or continuous SSB, CW. RtTV, AM or ATV operation. intended for coverage of ail amateur bands between 1.8 MHi and 21 MHz. Two ty e 3-500z giass envelope tnodes provide reliability and rapid turn-on ttme Pl-r etwark Input for maximum drive Pressurized plenum cooEing system DC an ten na relay for h urrv froe operation Illuminated SWR and power meters Vernter tuning for accurate settings Pl-L...

Circle On Reader Service Card

DAN KB0XC KiRBY KA ZTS LOUIS KAfllPN RON NfKMR DENISE L MAUNE XYL-W KE SUH FTlOOOD Deluxe HFw option 5 FT-i 000 Detune HF FT 767 GX Gen CvqJ cvr A FT-757 GX II Gen Cl Xnf FT-747 GX Gen Cvd j j FL-TOOOS V FT-736R Aly -i FRG-8800 G FT-J90FUH Al gt FT-712 70CM FT 470 2M 70CM F a FT-411E2M FM w.7 H FT-011 TOCM FM TTHK FT-26R 2MFMZWHH FT 76H 70CM FM 2W HH V Call S CaliS CairS CaflS Cal Calif Calis Call S CaJiS CallS Calis

Remote Field Strength Meter

An accurate system for measuring radiated power, Are you sure that you are obtaining the best radiating power from your antenna Most radio hams rely on their antenna tuning units and SWR bridge, as well as on-the-air reports. Yet there's always the feeling thai it could be improved. Most hams arc familiar with the field strength meter. The meter usually consists of a tuned L C circuit with a whip antenna, and uses a diode to register the relative field strength of the received signal on a...

Fcn

Vilid lor new Tn tKfionly foreign applicants til r c tv special or Jng msructjHi Canada musf iomn in u S corroncy This order subject to acceptance oy th ctrtinics Bck Club STAR39 All bw s are hardcover unie numb 3 loHcmed by a-P tor papmu . L Pnces Number 16 on your Feedback card

Cpr

Duaf-Bander 146 446MHz GoEd plated center conductor for exceitent electrical efficiency Wave Length 146Mhz 7fB Wave 446MHz 5 8 Wx3 We jII help you to find friends among Russian radio amateurs who collect postage stamps, Dadges. color postcards. Mile models ot sh ps cars, asolanes, etc We will publish bulletins with lets of collectors Our bulletins wiLi he sent to all who need our informal ion of he lip To be included tn our bulletin, please send your name, caSlsign. address, and kind ol...

Pream p Sequencer

Mast-mount your preamp for maximum performance. Thinking about mast-mounting a receiver preamp for your VHF UHF station Build this digital sequencer for uncurlailed SSB or semi-break-m CW operating if your VHF UHF station has a few dB of I'eedline Loss, and you use a transceiver, mast-mounting u GaAsFET preamp offers significant receive improvement. You can mount the preamp in-line with the main feed-iine using a pair of SPDri coaxial relays for isolation during transmit. The big problem is to...

Mmsmmdmmrmmg Mmu Mmk Mmwmmo

N 10 Pin watts, power output 2m TX N 10 P in watts, power output 10m TX N 5 V in volts. 15m RX AGC volts 2m RX off 2m RX on N 5 V in volts, 2m RX-AGC voltage Special command station channel off Special command station channel on N 5 V in volts, special command AGC V Output power 10m beacon no. 1 max Output power 10m beacon no, 1 mm N 3 service command parameter Output power 1 Dm beacon no 2 max Output power 10m beacon no. 2 min N 3 service command parameter Status of first memory board off...

Bnss

Hams Send 29c stamp lor catalog Home brew Electronics. P.O. Box 8294 Trenton NJ 08650 8NB701 RIG REPAIR by 20-year ham Fast, reasonable Skip With row r 5404 s Waiden Street, Au rora CO SOC15. 303 693-C997 S N67Q2 IBM PC vmEO DIGITIZER 640 BY 480 RESOLUTION. 25S gray levels. B9 90 Demo dJsfc S3 intormat on St Colorburst, Box 3031. Nashua NH 03061 BNB703 WANTED Manual for Panasonic B-band shortwave double superheterodyne, Model f Rf 22QO. CaH 716-247-5967. BN07O4 JEHOVAH'S WITNESSES Amateurs....