Radio Amateur 05-2002

Relative RF Power Meter

Diagram Amature Radio

Add this handy device to your shack's arsenal. The Relative RF Power Meter shown in Photo A is a. piece of test equipment useful for tuning RF circuits to maximum output power. The circuit does not measure absolute power, however it instead measures the relative output power as the RF circuit is tuned. When the meter shows maximum deflection, the output power is peaked. The meter has been tested from 2 MHz to I GHz over an input power range of approximately -10 dBm (0.1 mW) to 20 dBm (100 mW)....

The Digital Port

Box 1792 Carson City NV 89702-1792 KB7NO worldnet.att.net Digital communications has experienced a virtual explosion in popularity during the past few years. This means it is still quite new to many readers. My intentions are to anticipate your questions and help you over the bumps. Many ask, ' How do I get started If I get this in a dircct E-mail request, it is not unusual to have a secondary query Can you explain it step-by-step'.' This is an intriguing part of these...

Umidesi scanners

Less - 190 instant Rebate Special 339.95 500 Channels 10 banks CTCSS DCS - S Meter Size 7SIS Wide x 61 Deep x 213'16 High Frequency Coversge 25-0000-513.0000 MHz., S06.000-823.9875MHz., 849.0125-868.9875 MHz., 894.0125-1300.000 MHz The Bearcat 780XLT has 500 channels and the widest frequency coverage of any Bearcat scanner ever. Packed with features such as Trunktracker III to cover EDACS, Motorola and EF Johnson systems, control channel oniy mode to a 11 ow you to automatical fy trunk certain...

Wwv Receiver

Get time & frequency checks without buying multiband hf rcvr. Hear solar activity reports affecting radio propagation. Very sensitive and selective crystal controlled s.uperhet, dedicated to listening to WWV on 10 MHz. Performance rivals the most expensive rcvrs. RWWV Rcvr kit, PCB RWWV Rcvr kit with cabt, spkr, & 12Vdc adapter 89 RWWV Rcvr w t in cabt with spkr & 2W continuous duty output. L- felf fi. T301 Synthesized VHF Jfl C-'j X' ljlj Exciter for various jBwjBOTjBJp raWj 226 MHz. Dip...

Restoring an HQX Part

This Hammarlund rig has always been a favorite. Nostalgia Have you really given any thought to the amount of love you develop for a. piece of ham equipment After using a Hammarlund HQ-140-X for many years, it be came part of my family, so to speak. It was a piece of equipment that could be counted upon to be dependable and would work any time that it was needed. I don'L recall for sure when I obtained the HQ-140-X, but can tell you that once I used it, it was going to be mine forever and it has...

Pc Board Services

Location of range extender in dBm meter case. 915 NW First Ave., Suite 2902. Miami FL, 33136 305-372-9427 www.sciamMiingnews.com the Ladder Crystal Filters book listed at the end of this article for details. It can aiso be used to measure field strength by connection to a whip antenna. A meter like this can be used to tune a 6-meter antenna for maximum forward gain or to measure front-to-back ratio in dB. Many other uses are possible. The extender can also be used up through 70 MHz at...

Rxl Crxl

Connect consumer outputs to XLR inputs Left & right audio gain adjustments So you're trying to connect consumer audio outputs with RCA connectors (unbalanced) to XLR (balanced) inputs. Always a problem ,Not anymore with the R2XL1 Unbalanced to Balanced Audio Converter Kit 49.95 Matching Case & Knob Set 14.95 Our FM100 is used all over the world by serious hobbyists as well as churches, drive-in theaters, and schools. Frequency synthesized PLL assures drift-free operation with simple...

Travels with Henryk Part

I have visited many islands, and one thing I've noticed is the higher-than-average interest in amateur radio 011 most of them. Malta is a typical example of this phenomenon. Photo A. Quite ci few people show up at MARL for the Sunday meetings. Photo A. Quite ci few people show up at MARL for the Sunday meetings. There are almost 500 licenses issued in Malta, while the population is less than 400,000. The truth is that a large number of these license holders still enjoy CB. as in other places I...

Power Station

One of the things that you can count on in an emergency is that you won't be able to count on anything. The repeater you plan on using will be down or you won't be able to hit it with the antenna you brought. With the traffic lights out of commission, it will take forever to get to your assigned location. Then, of course, you'll only have limited choices for powering your radio. When an emergency occurs, the first rule is to be as self-sufficient as possible. As you know, I'm a firm believer in...

Microwave Operation Tricks of the Trade

Well, tricks of the trade are not all secretive idioms, but rather they're just easy-to-use methods of procedure and equipment adjuncts to make microwave operation easier. For instance, when standing on a hilltop and trying to point your dish to a station on 10 GHz located some 50 to 100 miles from your location, where exactly do you point Also, how do you confirm that your station is operating on an exact frequency let's say 10,368.1 MHz Some preparation is needed before starting out to make...