Circle On Reader Sevice Card

T Jk about pissing contests I'd like to do just that to many of your letter writers. What's this crap about agreeing with you 95 of (he time, then proceeding to make feeble attempts at refuting your statements Aiso> some of your readers IAB6QR is a good example have a hiibii of misconstruing what they have read. They miss the point completely, then ridicule and display their ignorance attempting to disprove plain ordinary facts. I have reference to my letter in the August...

Scanner Converter

Tune n on the 800-950 MHz action using your existing scanner. Frequencies are converted with cfy& ial referenced sta& ilty to the 400-550 MHz range. Instructions are even included on building high performance 900 MHz antennas. Weil designed circuit features extensive filtering and convenient on-oli,-bypass switch Easy one hour assembly or available fully assembled. Add our matching case set for a professional look. SCN-1 Scanner converter kit 49.95 SCN Maichino case SCN-1 WT Assembled...

Amateur Television

Carl Berry K5MWN has put together a very detailed and informative site that describes how to build a remotely-powered vehicle with an R C plane, and a converted arcade game that actually puts you in the pilot's seat via ATV and find telemetry information, launch and recovery photos as well as several incredible photos taken from the edge of space. There is a Amateur Radio Balloon Symposium in Iowa this July check out the detailed information about the symposium in the News from other Balloon...

New Products

The new V-35W 2m VHF amplifier from Tucker Electronics features a built-in 15 dB preamp and a unique DC Monitor Meter thai provides the operator with a constant reading of DC input voltage. The V-35W will accept 0.S-8W input power and produces up to 35W Of output power It operates on both FM and SSBi CW and is equipped with a built-in RF power meter.

Bclmm

TDOA RDF sets such as the VF-142Q get bearings by determining which of its two vertical antennas is closest to the transmitter. Differences in arrival time produce differences in the phase of the signals from each antenna. Accordingly, some hams prefer to call these twits phase front detectors 102, San Diego, CA92111, phone (619) 565-1319. In addition, Radio Engineers makes the VF-142QM, which has a slightly different configuration of the antenna support arms. This allows them to be...

Rc Ac Ac Ac

The upper trace shows the unprocessed audio of a phone station in the noise, The lower trace shows the effect of the SIR 12, SIR mode onlyt XIH control u t to 10 o'clock. The pattern displays amplitude on ilu vertical u.xis. time on the horizontal. The liming has been adjusting to compensate for the XIR-J2 delay, Photo A. The NIR- 12 noise and interference reducer. Photo A. The NIR- 12 noise and interference reducer. now using the NIR-12 every day. This clever device gives me an array of...

License and Handheld

Michael Farrar VE3WMF 12-125 Weldrick Rd W. Richmond Hill ON L4C 3V2 farrarmi epo.gov.on.ca Now thai you have your No-Code Technician's license, you've bought a 2m handheld, mounted t in your car lor mobile use. even put up a good vertical antenna on your chimney. and bought or built a 13.8V power supply Lo get the handle's full gallon out great, welcome to the hobby Now where do you go from here There arc several modes, other than FM repeaters, that will lei you talk to a wider world, W ith...

The m Quad Project

Here's a great antenna project for your club Larry R. Luchi W7KZE P.O. Box 1612 Mukilteo WA 98275 As the rainy season blew into Pugct Sound, I was giving thought to the second semester of our electronics technology program at Sno-lslc Skills Center, During this semester 1 teach amateur radio to my junior and senior high school students a daily block of three hours of classroom lecture and lab. fcach of my students builds an AM KM superheterodyne receiver to give further understanding to my...

Homing in

Joe Moell P.E KGOV PO Sox 2508 Fullerton, CA 92633 As 1 pulled into the starting area of one of my first 2 meter hidden transmitter hunt at a hamfest in San Diego about 20 years ago, 1 thought 1 couldn't he better prepared. I had my four-element radio direction finding (RDF) quad on a mast going out ol the passenger-side window, a big external S-meter on the dash, and an RF attenuator to knock the signal dow n into S-meter range as 1 closed in. The back seat was full of maps and on-foot...

The MFJ Meter

Jeff Gold AC4HF 1751 Dry Creek Road Cookesville TN 38501 I love to operate 20 meter QRR I got my start in the QRP mode with one of the original MFJ 20m CW rigs and a dipole. I had a blast working all over the world while I was portable and using battery power. When MFJ came out wilh the 20nt SSB travel rig, I just had to have it so l bought one and had a great time. We used it during a University Club QRP expedition, an event which really gave Students a reason to want to upgrade. They had a...

Ldk

NIR-12 Dual DSP Noise Reduction Unit P.O. Box 97757 Raleigh NC 27624 7757 USA Tech Line 9l9.790.l04S FaM 919.790.1456 Email jpstf nando.net P.O. Box 97757 Raleigh NC 27624 7757 USA Tech Line 9l9.790.l04S FaM 919.790.1456 Email jpstf nando.net http emporium. tumpike.net J JPS jps .html Ask Tor a catalog or J PSr complete line or noi ie reduction products . m i -ll Number 54 on your Feedback card Michael J. GeierKBtUM c o 73 Magazine 70 Route 202 North Peterborough NH 03453 In a previous series...

Just Who Did Invent Radio

If you 're sure you know the answer may surprise you. Glen E. Zook W5UOJ 410 Lawndale Drive Richardson TX 75080 There's a lot of interesting history in the realm of radio and its child, television. The players include inventors, businessmen, performers, and lots of other people. Unfortunately. the vast majority of this information has not been made available to the masses First of all. ask the average American, Who invented radio If they know at all. the reply will usually be Marconi. For most...

Hb

Can be used to highlight the area of interest. It's not as dead-on-accurate as a laser pointer, and it translucent the room must be fairly dark but it does work nicely on most phenolic boards encountered in ham radio equipment. Sometimes you can even see the silk-screened printing from the other side coming through, though of course it's reversed. So if a laser pointer is still not on your workbench they're down to less than 30 now , a small mag flashlight should be, and it can be used in a...

Fm Subcarrer Decoder

Tac into the world of commercial-free music and data that is carried over many standard FM broadcast radio staiions. Decoder hooks to the demodulator of FM radio and tunes the 50-1 DO KHz SCA subcairier tend. Many radios have a demotf output, but if your radio doesn't, it's easy to locate, or use our FR-1 FM receiver kit which is a complete FM radio with a demod jack built-in. These hidden1' subcamers carry iots of neat programming - from stock qu amp tes to news to music, from rock to easy...

JUL

SAN PEDRO, CA The Umted RAC and the FL MacArthur Military Museum Assn will operate K6AA al the Ft. MacArthur Military Museum, 3601 South Gaffey St,, 0800-2000 PDT July 13th and080CM600 PDT, July 14th. Freq. SSB 7.260, 14 280, 50.150. and 144,250 MHz. FM Voice 51.060 and 145.520 MHz. For a commemorative QSL card, send QSL and a 9 x 12 SASE CAPE 8RETONt NOVA SCOTIA, CANADA The West Island ARC of Monireal wilt operate from two locations on a expedition to Atlantic Canada, From 17-22 July a...

CMOS Super Keyer

State-of-the-Art Key er Kit is a Bargain Marshall G. Emm AA0XI VK5FN 2460 S. Moline Way Aurora CO 80014 Ii s probably a sign of the limes, but when ii conies to Morse keyers and keyer kits, there isn't a whole Lot to choose from. There arc lots of basic iambic keyers based on the Curtis 8044ABM chip or an imitator, starting All settings and the contents of the memories arc stored in NV RAM, which is permanent and does not require a battery or power connection. Power consumption is extremely...

Quads

Many other models available Call for brochure today. UPS Shmpable Lightning Bolt Antennas RD 2, RT 19, Volant PA 16156 412-530-7396 FAX 412-53Q-G79G feature articles and reviews, and the rest of the 134-page magazine was devoted to columns nnd nds. From page 34 onward it was all columns Only one of the articles was construction oriented a simple antenna switch. Say, I wonder when editor K2EEK is going to gel his General ticket and loin us on the low bands One of the reasons I got 11 red as the...

M

The only thing low about our charge is the cost., Special Empires Au tisr 31 1996 1-800-634-8132 300 Centre Street Holbrook, MA 02343 617 767-5516 FAX 617 767-4599 hit p hu m c.n yisoftic ro peripher Bill Brown WB8ELK 139 Angela Dr Apt. B Madison AL 35768 bb ro wn hi waay n et bor those ol you who enjoy surfing the internet, you'll find lots of ATV information online. number of ATV groups and individuals have Ui ken advantage of the capabilities of the World W ide Web to provide net surfers...

Maggiore Electronic

INTRODUCES THE NEW Hi Pro nR1a RE PEA TER HERE ISA COMPLETE LOW COST VHF REPEATER LESS CONTROLLER. PRICE 589. Q0 A 35 WATT VHF REPEATER WITH VOICE, AUTO PATCH, AUTO DIALERS ETC. 1145.00 THIS IS NOT A KIT BUT A COMPLETE REPEATER WITH A 2 YEAR WARRANTY AVAILABLE IN BOTH VHF OR UHF. FOR MORE INFORMATION CALL OR WRITEt MAGGIQRE ElECTRQNtO LAS , SOG WESTTQATl RGWI3. AEST CHESTER, PA., 19332. Pn F x 6iQ436 626S INTRODUCES THE NEW Hi Pro nR1a RE PEA TER HERE ISA COMPLETE LOW COST VHF REPEATER LESS...

N

Block diagram for a 10 GHz wideband FM Gunn transceiver. Fig. J . Block diagram for a 10 GHz wideband FM Gunn transceiver. The TDA-7000 chip It- amplifier that Lived is capable of delecting a signal of 10 microvolts and producing a full quieting audio output Coupling it uiih a simple single-stage RF amplifier, such is a 40673 MOSFET or a U-310 JFET amplifier, will Our Microwave Group in San Diego was founded on the use of WBFM and simple Gunn transceivers the cost was minimal, and it...

Qrp

Michael Bryce WB8VGE 2225 Mayflower NW Massillon OH 44646 Operating QRP usually means you're going to be using CW. Building a transmitter for CW is a lot easier than hacking one out tor SSB. So, it's easy to see why there are many add-on devices to improve the sending of CW, but there's very little 011 the market The circuit board is fitted to go inside an edge-card connector, or to be plugged in 10 the PC board with he supplied dual-pin header. The VM-111 A contains everything you need to...