Build the Turbo Digi Sniffer

A quick, cheap and easy digital field-strength meter. Dave Pelaez AH2AR 5 7309 Centenary Dr. Rowlett TX 75088 helher you arc involved in foxhunting, testing actual antenna performance or sniffing out leaky transmission lines, a sensitive field-strength meter (FSM) is an excellent addition to the ham shack. The heart of this digital FSM utilizes an already-assembled liquid crystal digital display that has become available through numerous sources distributors. I initially found one of these...

Maggiore Electronic

INTRODUCES THE NEW Hi Pro R1 REPEATER HERE IS A COMPLETE LOW COST VHF REPEATER, LESS CONTROLLERj PRICE 639.00 A 35 WATT VHF REPEATER WITH VOICE, AUTO PATCHf AUTO DIALERS ETC. 1195.00 THIS IS NOT A KfT BUT A COMPLETE REPEATER WITH A 2 YEAR WARRANTY AVAILABLE IN BOTH VHF OR UHF. FOR MORE INFORMATION CALL OR WRITE, MAGGIORE ELECTRONIC LAB., 600 WESTTOWN ROAD, WESTCHESTERPA.t 19382, Ph. 610-436-6051 Fax 610-436-6266

L

Bring the ladder line vertically down the birdhouse pole, stapling it occasionally through the insulation, or use hot glue. Paint the line the same color as the pole, at least as high as you can reach standing on a kitchen chain Adults will never notice it, because few adults pay any attention to anything much above eye level. The ladder line now will probably have so be routed through a length of PVC pipe from the pole to the shack wall, but it's not a good idea to have your feeders close to...

Mobsle Colinear Antennas

Honest 4.& dB gain 1000 watts DC 17-7 pn Painless stedt Lg > ifec Hugged f tan glass fcase station Hase'itfrigjsid 3 0X24TPI Length 900 146 MHz 7'2 9G3B - 220 MHz 4 9 9440 - 440 MHz 5v version available v M sf 3QQ7-B * 903 -B * 9440-B 3G20-9A Whitehall RcLt Anderson, SC 29624 864 226-6990 FAX 864-225-4565 Add 7 per order for S H *H ids bW Hams icK Antennas and many othe's. Over 400ii of holding powei *H ids bW Hams icK Antennas and many othe's. Over 400ii of holding powei 3 8 x 24 thread...

Weather Broadcast Receiver

Hams need to know about storm emergencies. Dear Lewis WA3WGV 1193 Azalea Lane Palatine IL 60074 The NOAA Weather Radio < NWR) broadcast system transmits on seven discrete 25 kKz-spaced Ire-quencies between 62.400 and 162,550 MH _ from over 425 stations co ering all 50 states, adjacent coastal waters. Puerto Rico, the U.S, Virgin Islands, and U.S. Pacific Territories. The system currently covers 70 to 80 percent of the U.S. population the current expansion program will increase coverage to 95...

FEB

ALEXANDRIA, VA The Mount Vemon ARC wi operate K4EC 1600Z-2200Z Feb. 15-16 to commemorate George Washington btrrxiay. Operation wi be in the tower General 80-15 meter phone subbancte and n he Novice 10 meter subband For a certificate, send your QSLanda 9x12 SASE to MVARC, P.O. Box 7234, Alexandria VA 223071 For more information, contact Mary Pat Nowack KE4QWK 703-684-8793. S A Quality Transceiver for the Serious Low Power Operator An all new receiver d ign TncorpoMiinp, cu*lom mincer from...

Info

On the cover Photo by Bob Suding WOLMD, who explains The picture is my 2 el 40 beam, my 3 el 30, 17 & 12 beam and my 2 & 3 4 beams for OSCAR 8,950 feet. Distant mountains are 15 miles away 14,000 feet ' Feedback Any circuit works better with feedback, so please take the ttme to report on how much you like, hate, or don't care one way or the other about the articles and columns in this issue. G great , O - okay, and U - ugh. The G's and Of will be continued. Enough U's and it's Silent...

Mfjb

Tote your MFJ-259 249 209 SWR Analyzer anywhere with this custom Carrying Pouch. Made with a special foam-filled fabric, it cushions blows, defects scrapes, and protects knobs, meters and displays from harm. The MFJ-259 is fully portable, powered internally by 8 AA batteries or 110 VAC with MFJ-1312B, 12.95. It's in a rugged all metal cabinet that's a compact 4x2ifex6 inches. Take it to remote sites, up towers, on DX-peditions -- anywhere your antennas are located. For rough service, pick up a...

We Also Offer

Camcorder Batteries Accessories Cordless Phone Batteries Custom Battery Packs NiCad Cells Lithium Cells Cellular Batteries Advanced Battery Systems, Inc., 300 Centre Street, Holbrook, MA 02343 800 634-8132 617 767-5516 Fax 617 767-4599 providing a greater learning experience at a lower cost per student HI bet a good deal of corporate funding could be made available to help build these mobile labs. For the younger kids this would make a way to bring exploratoriums to them to provide them access...

Qrp

Michael Bryce WB8VGE P O Box 508 Massiilon OH 44648 This month. I have some more odds and ends for you. These circuits and tidbits may help you enhance the performance of your QRP equipment, A amp A Engineering RIT modifications The first project comes from John Rest, Sr. WAIYIH, John took the RIT circuit for the MFJ QRP monobanders and modified it to work with the Gary Breed K9AY A lt fcA Engineering 30 meter rig. The original circuit appeared in 73 s QRP column for November '95. Here is John...

Get The Atv

Snow free line of sight DX is 90 miles - assuming 14 dBd antennas at both ends. 10 Watts in this one box may be all you need for local simplex or repeater ATV. Use any home TV camera or camcorder by plugging the composite video and audio into the front phono jacks. Add 70cm antenna, coax, 13.8 Vdc 3 Amps, TV set and you're on the air - no computer or other radios necessary, it's that easy TC70-10 has adjustabfe RF out 1 to gt 10w p.e,p. and sync stretcher to properly match rf Concepts 4-110 or...

Rep Repeater

FM EXCITERS 2W output, continuous duty. TAS1 for6M, 2M, 22D MHz . kit amp 99, wrt 169. TA45t for 420-475 MHz. kit 99, w t 169. TA901 for 902 928 MHzh 0.5W out w t 169. Hamtronics has the world's most complete line of modules for making repeaters. In addition to exciters, pa's, and receivers, we offer the following controllers. CQR-3. Inexpensive, flexible COR module with timers, courtesy beep, audio mixer only 49 kltp 79 w t OWiD, Traditional diode matrix IDrer kit only 59 CW3D-2...

Dqc

Get striking images directly from the weather satellites A very sensitive wideband fm receiver optimized for reception of NOAA APT and Russian Meteor weather fax images on the 137 MHz band. The R139 is lower cost and easier to maintain than synthesized units. And it is designed from the ground up for optimum satellite reception not just an off-the-shelf scanner with a shorted-out IF filter Covers atl five satellite channeis. Scanner circuit and recorder control allow you to...

Qrp Tr Circuit

Meyer WU0L 14153 West First Drive Golden CO 80401 Have you been looking for a simple T-R circuit for your QRP transceiver project I Loo was faced with this problem recently. I wanted something thai was simple, would work for several different bunds, and would not add significantly to batlery drain. Most of the current crop of QRP designs and kits are of the single-band variety and use the L-C series traps method of automatically isolating the receiver input trorn the antenna when the...

Codemaster V

Antennas at either end of the connection don't need to have the same polarization. For short-path communications, VHP FM work for example, polarization may be quite important. Cross polarization can result in 20 dB losses in cases where different methods are in use at the transmitter and receiver The Hentenna is a very interesting, often overlooked, design that can be used on HF and VHF installations. The literature contains references to installations on 10, 6 and 2 meters. The structure is...

Circle On Reader Service Card

,4 little device That changed the world. L. VanProoyen K8KWD 8330 Myers Lake NE Rockford Ml 49341 As we approach the millennium in this information age ' we have access to a variety of comm un i cat ion technologies. This is the story of how the forerunner of them all. the electric telegraph, came to be. Di-di-dah-duh-di-du dots and dashes. When you hear ihe sound, you most likely think of Morse code right But did you know thai Samuel Finley Breese Morse's original telegraph system was not...

Xxj

I tracked the tw o boards in f rder io minimize the overall dimensions of the final enclosure. Fig. 5. Component side of the cm nil board showing parts placement i not io scale , A 73 gift subscription is a gift you know will be appreciated, Please call 800-274-737. Photo C. I tracked the tw o boards in f rder io minimize the overall dimensions of the final enclosure. Fig. 6. PiAVt r supply cin uii xxird tactual size . Fig. 6. PiAVt r supply cin uii xxird tactual size . Robert W....