Info

Wait Remover regulator schematic Only one of four regulators shown Figure L Wart Remover schematic diagram. In our continuing effort to present the best in amateur radio features and columns, we recognize the need to go directiy to the source you,, the reader Articles and columns are assigned feedback numbers, wbicft appear on each article column and are also listed here Please rate each feature or coiumn as Great OK. or No Way. Mail your responses to 73 Magazine Feedback. 70 Route 202N...

Cercle On Header Service Card

Fealure Soltv. are based PACK El thai makes your Computer emulate a TNC Modem connects from 4orial pori to RIG. Waichdoq time* & reed relay PIT standard. Operdies irem 12VDG iDOma. wall powei supply included Uses cryslal controlled 9i0 chip. VHF and HF. Lock & TX LEO indicators. Free copy of Version 1.40 English soflware Included. Kit 59,95 Enclosure 10 Assembled & Tested Board 79.95 Assembled & Tested In 9ox 89.95 CA Residents add 7,75 safes tax. S& H 5.00 (insured), Foreign...

Meter Vhf Amplifiers

35 Wat Model 3 15A 79.95 Kit 75 WflU MM 07 A 119.95 Kit HF AMPLIFIERS per MOTOROLA BULLETINS F ads LUt lot HF Amplifiers f2-30MHzj OMcrtboa i pie MOTOROLA Buiiei.ns AN7& S MOW ARS13 30OW 600 W H PEP 2-Popt 69 95 1000 Walt PEP -f> on S 79.95 120D Wilt PEP 4-PQri S 09.95 100 WATT 420 450 MHz PUSH-PULL LINEAR AMPLIFIER - SSB - FM ATV K1B67-PCP (PC Boapd) 16.00 KEQ67-I (Monwl S 5 00 HEAT SINK MATERIAL Model 99 Heat Sink (6 5 it 12* 16) _ 24.00 CHS B Copp*T Qptnder x 6 x S 22 00 CHIP...

Get The

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 - it's that easy TC70-10 has adjustable 10 Watt p e.p. with onextal on 439.25, 434.0 or 426.25 MHz & properly matches RF Concepts 4-110 or Mirage D1010N-ATV for...

Nir

At long last, the most advanced noise reduction filter unit is now available from JPS. DI JAL DSP chips are used in the NIR-12 to provide simnl in o bandwidth filter, noise reduction (2 types) and tone removal. Both Spectral Subtraction (NIFi ) and Dynamic Peaking noise reduction methods are included to provide reduction of IMPULSE noises as well as atmospheric white noise. An AUTOMATIC NIR mode is included to set the noise reduction at the optimum poinu based upon the measured Signal-1 o-Noise...

MAY

Maryland FM Assn. will hold their annual Memorial Day Hamfesr at the Howard Co. Fairgrounds, MD RT 144, West Friendship MD from 3 AM-3 PM Table reservations paid in advance only. Con* tact Melvin Seyle WA3KZR. 15809 Pointer Ridge Dr., Bowie MD 20716. Tel. (301) 249-6147. Talk-in on 146.76T 224.76, and 444.00. CHICAGO, IL The Chicago ARC will hold its annual Hamfesi at DeVry Inst, of Tech., 3300 Nr Campbell. 3 AM-3 PM. Setup at 6 AM. Talk-in on 147.255(h), 444.e25( + ), Outdoor Swapfest, For

Boyd Electronics

Boyd's new RW Series receivers offer an excellent means of setting up a low cost station for QRP operation on 20, 30, 40. and 80 meters. True superheterodyne direct conversion receivers, they provide excellent frequency stability, with no drift during operation. The singEe circuit board features the NE602 mixer IC, popular among amateur receiver builders. An easily adjustable two-stage input preselect filter reduces out-of-band and harmonically related signals, and with an approximate 0.1 liV...

Wart Remover

Build this easy module to eliminate unsightly wall Most of ihem are small, hlack and ugly. E er ham 1 know of lias dozens of them sucking up juice, even when they're doing no work at .ill. TTiey hide in the most mit-of-the-wav places, vei they're Li> s in ihe way. They can suck the life right oil of your standby battery brinks it you're on inverter power To top things off, they're expensive io buy if you need one. What are ihey They're wall warts small power supplies you plug into the wall...

Circle On Reader Service Card

73 Amateur Radio Today May. 1995 63 70 Route 202 North Petertiorough NH 03458 This month Id IJks lo bring you some ATV news from Europe. A very active group from Donmark lias accomplished some remarkable ATV DX contacts on the 10 GHz band this past summer During the Danish Microwave Week (mtd-June 1994), numerous sta-lions were set up over the region with voice contacts being made on 10, 24, < 17, 76 and 145 GHz In order lo try something new. Bjame QZiUM and Soren OZ3VC broughi along...

Gmn

C O 73 Magazine 70 Route 202 North Peterborough NH 03456 I have just returned from a trip to China. Hong Kong and Hawaii. didn't yel to do any hamming in China, and, as tar as could tell, the whole subject was one not very famiFiar io the average Chinese. (Then again, the average American these lays is in pretty much Ihe same t> cal ) In Hong Kong, 1 visited uncountable numbers of eiec-troriics shops the e ar* at least two on every street in Kowloon It's Ka-boom heaven They re very much like...

BNB

Your Ideas or ours. Excellent quality. Foil stamping availabJe. Many designs and type styles. Catalog and samples l ,00 refundable. WILKINS, Depl A, Go* 787, Atascadero CA 93423. BNB370 IT'S BACK The return of the HW 8 Handbook' Second printing. Modifications lor ihe Healh ORP rigs. First class maij S11. DX atfd i for air mail shipping Mike Bryce, WBBVGE. 2225 Mayflower NW. Masstllon OH 44647. BNB404 ASTRON power supply, brand new w. warranty, RS20K' 95. RS35M...

Newswatt

12.7 approx. output (144MHz), 2W approx. output (440MHz) from MOS FET power module and supplied 6V battery 5W approx. output using optional PB-34 I Dot-matrix LCD with menu guide system 182 non-volatile memory channels with ID IDTMF keypad with memory (unction I DISS (Dual Tone Squelch System) with page I Built-in CTCSS tone encoder decoder I Automatic band change I Power-on call sign display I Auto repeater offset (VHF) I Wide-range flexible antenna I Input overvohoge warning 13-position...

Builders Guide to

There* no question about it* I like to build electronic kits From ihe old Hcathkits 10 the baggie of part kiis. I Jo like the smell of molten solder But there's more to bam radio than juM stuffing a PC hoard with pieces parts. I also enjoy designing my own gear from the ground floor. If nothing else, it's it learning experience, 1 ma> not know everything there is to know about power MOSFETs, but i sure can tell you liow not to use them. All yes, the utter shock of seeing bits oi TO-220 case...

M

Alineo Electronics Inc. 438 Amapola Ave,. 130 Torrance CA 90501 Telephone 310)618-8616 Fax 310)618-8758 Price Class 459 Almco Electronics has just introduced their new 6 meter mobile transceiver DR-M 6 wiih built-in CTCSS tone encode, and an incredible 100-memory channel capacity slraight out ol the box to memorize your local and all-country 6 meter repeater and simplex channels. Use the ARRL repeater directory for memorizing 6 meter repeater frequencies, and don't be surpnsed to see different...

Jps Communications

From JPS Communications, Inc, comes the new ANC-4 Antenna Noise Canceller. Installed at your receiver transceiver's antenna connector, this RF device cancels locally generated noise power line noise, computer TV noise, electrical noise from local machinery, etc, from signals received by a primary antenna. By removing the noise before it gets into Llie receiver and affects the receiver's AGC circuits, it allows reception of signals well below the noise level induced by the interference. It works...

Elenco Oscilloscopes

V 222 - SQMHi, DC Off s _ V lt Up - BOMtfe. Dual Tau _ . V-eeSA 6CMH2.DT, wtolFW _ V-1 ae t DOM m. 0 a r ace V-10eSA lOOMH , DT. w CufSiK v-ioas- 1 DMHI. QT. w,tur r_ S-1325 SMHi J34 lt H0MHz S4 S High Lumijianca 6' CP T TV Sync 1 mV Ssra iv y mt - 1. KlO Protei M X-V Operalitm Complrte Schernaus El Va l ge. T.rt, Frequency diflerencia fispuyed on CRT hfu tht use if Curp fS S-15BS on y 2 1 25 - 20MHi Da I ay off Swaap_S53i 1 S-d 1B JflMHa Dual Trace___ 749 2- lOOMHi Tnraa Tri Dual Ttme Base....

Departments

50 Carr s Corner 17 Feedback Index 53 Ham Help It s Tike l gt ein tlieiv 11 Lll hert in our offices I luv. ' Just ttke advantage of mir FEEDBACK list on pii o 17. Vom LI notice a feedback, number the beginning of each article and column VV iE like you to rale whu you iieaci so that we can print what lypes of Lhiiiirs you like best. On the cover Jason Auvenshine N7UGP, Bob Buchanan KA7CC. and Jeny Ctark K7KZ home in on what later turned out lobe a hoax emergency signal. Turn to page 5Z Homing...

Xband Transmitter

Miniature 21 x 3 x rjGaAsfnicrostrip transmitter pro vides 10 dBm centered at 10.525 GHz. Integrated micrastnp patch antenna eliminates the need for an external antenna Advanced matching techniques secured good temperature stability with tow frequency pullrng. Great torlong-range testing of radar detectors, calibration of radar receiving equipment, and point-to-point communication links, Complete Assembled Parts amp Instruction P.O. Box B0096, Fort Wayne, IN 46898 2191 489-1711 Visa MasterCard...

The Comet HAS

Comet Ha4s

Ever since the introduction ol several small HF transceivers there has been a huge influx in the amount ol HF mobiling. it is now very easy for anyone to throw a hg in the car and operate on those long road trips. Choosing the right antenna can be rhe hardest part of the whole installation, With so many different makes and models available deciding what is best suited for your needs can be confusing and difficult With so many of us driving small cars today and living in urban areas the size of...