Radio Amateur 06-1998
Meet the Marvelous Micro Vert
Is this the world's smallest vertical antenna Well, I'll admit that the Micro Vert's claim to this title has not been well researched. There might be a smaller 20-meter vertical antenna out there, but 1 11 be very surprised if there is The MicroVert measures in at an astonishing 20 inches tall and yet manages to cover the entire 20-meter band with an SWR no higher than 1.5 1. Amazing Maybe. Interesting Absolutely Imagine the response you will get from other stations as you describe your...
Microvert Antenna
Construction materials for the MicroVert antenna. in the tank circuit from escaping and interfering with my mother's soap operas. The lesson was learned and remembered. The MicroVert is simply the recreation of the tunable output circuit of that little 40-meter transmitter, enhanced in such a way that it radiates as much RF as possible. The MicroVert is, in fact, nothing more than a series-resonant circuit with a Q low enough to cover all of the 20-mcter band. Photo B. MicroVert parts...
Techno Trouble II
All right, let s see how you do with these. In the April issue, we introduced Techno-Trouble for Know-It-Alls. How did you do Here are fifty more semi-technical posers to further stretch that gray matter. 1. On 20 meters, an important attribute for any good receiver is noise figure. T F 2. Reducing your transmission line loss by 3 dB results in a 6 dB station performance improvement. T F 3. A well-optimized three-element vagi offers about 10 dBd gain. T F 4. The no ground radials required...
Hamfest Every
Bill Clarke W2BLC 764 Alta-Voor Road Altamont NY 12009 One of the most enjoyable activities for hams is hamfests those gatherings where hams get a chance to look for used and new equipment, parts, and radio paraphernalia. Looking at all the old rigs for sale, some al bargain prices and others at well, you know slightly more than the price of gold. But suppose you live in an area where there aren't a lot of hamfests, or you can't easily attend a hamfest because of work- or health-related...
1998 Mfj Catalog
Measure signal strength over 60dB range - Check and set FM deviation - Measure antenna gain, beamwidth, front-to-back ratio, sidelobes, feedline loss in dB - Analyze audio quality with scope MFJ's revolutionary handheld 2 Meter FM Signal Analyzer lets you measure signal strength with over 60 dB dynamic range check and set FM deviation of your packet and voice radios measure antenna gain, beamwidth, front-to-back ratio, sidelobe suppression and actual feedline loss in dB. Plug in any scope and...
Circle On Reader Service Card
Spectrum Electronic Products introduces the world's first handheld repeater controller. No larger than most handheld radios, the HRC-10 converts a single or dual-band radio into a full featured simplex or duplex repeater system. Key featuresoftheHRC- 10 include voice IDer, DTMF Control and programming, hang and time-out timers, Digital Voice Operated Squelch DVOS , telemetry tones, and private voice mail http www.spectrum-usa.com 800-566-2788 - fax 408-336-9461 Spectrum Electronic Products...
Yaesus VXR Micro Dualband HT
Pluses and minuses, big and little er, tiny. Michael Geier KB1UM c o 73 Magazine 70 Route 202 North Peterborough NH 03458 A few years go, Standard Radio Corporation shattered the HT size barrier with the C-108A and C-508A micro walkies. Being a lover of tiny gadgets, I bought a C-508A as soon as I could get my hands on one, vowing to let it go only if someone made a rig even smaller and or with more power output. Well, somebody has Yaesu s new VX-1R is a full-featured dual-band 2 m and 440 MHz...
The Fun Radio
or, w cis 11 y this what attracted you to the hobby in the first place Hugh Wells W6WTU 1411 18th Street Manhattan Beach CA 90266-4025 With modern electronic components to help you, step into the past and enjoy the technology of yesteryear. Most people feel that current technology is better than that of the past and rightly so but one can enjoy the older technology and maybe even learn something interesting in the process. The Fun Radio combines both old and new technology in one simple...
Roamin Romania
Part I Timisoara, home of the revolution. George Pataki WB2AQC 84-47 Kendrick Place Jamaica NY 11432 In the fall of 1997, I decided to visit, probably for the last time, the city where I was born a long, long time ago. I wanted to meet my radio amateur friends and see how they w ere coping under the new socio-political system. almost a dccadc after a bloody revolution that freed them from dictatorship. I Hew with TAROM, the Romanian airline, the only nonstop flight from New York City to my home...
Pc Electronics
Carole Perry WB2MGP Media Mentors Inc. P.O. Box 131646 Staten Island NY 10313-0006 What in the world does ham radio have to do with I he renowned composer George Gershwin We who have been in the hobby for a while know that the influence and fun of radio can easily permeate many aspects of our lives. So it really didn't seem far-fetched to me to recommend the use of radio operators to assist a friend who was producing the 100th Anniversary Salute to Gershwin at Brooklyn College in Brooklyn, New...
Capacitor Side
Gray lines indicate areas with copper foil removed. A-D are wire jumpers to opposite side of board. Packs amp Charger for YAESU FT-50R 40R 10R FNB-40xh sfcm-NMH 7.2V 650mAh 41.95 FNB-47xh N.MH 7.2v 1800mAh 49.95 FNB-41xh 5wMMH 9.6v lOOOmAh 49.95 BC-601c Rapid Trickle Charger 54.95 FNB-38 pk 5W 9.6v 700mAh 39.95 BC-601b Rapid Trickle Charger 54.95 For YAESU FT-530 416 816 76 26 FNB-26 pack 7.2v 1200mAh 29.95 FNB-27S pk 5w 12.0V 800mAh 35.95 BC-601a Rapid Trickle...
Michael Geier Kb1um
Super stable, drift free, not affected by temperature, metal or your body Frequency is set by a crystal in the 2 meter Ham band of 146.535 MHz, easily picked up on any scanner radio or 2 meter rig. Changing the crystal to put frequency anywhere in the 140 to 160 MHz range-crystals cost only five or six dollars. Sensitive electret condensor mike picks up whispers anywhere in a room and transmit up to 1 4 mile. Powered by 3 volt Lithium or pair of watch batteries which are included. Uses the...
Videotransmitters Smallest In The World
-90 M H r Cry it al controlled, range 300-600 feet, 10 mW, front 119 S -Size only 0,S X 0,4 AM or FM modulation, IDEAL FOR SECURITY -High quality BA W or Color picture. PAL or NTSC SYSTEM. -Long range units lire available upon request, no audio -SMALLEST IN THE WORLD TRANSMITTER CH 59- 4JJ MHz- 99 S -RECEIVERS FOR 900 MHz (or AM or FM, TUNABLE, from 149 S -PANEL ANTENNAS 10dB GAIN , 900 MHz, from 69 -NEW M M PS DOWMON V'FRTERS 2.5-2.7GII*. with MtfMUM- 199 -VIDEO-TRANSMITTERS 2,4 GHz, slz* 0,8X...