June

ATHENS, GA The Athens RC will sponsor a Hamfest from 9 AM-3 PM at Bishop Pk, Sunset Dr., off US 129. Fiea Market. VE E*ams at 9 AM. TaiK-in on 14G.745. Contact George Kelley WB4VNT. (706) 546-7713 or Rodney Couch KE4ANM. P.O. Box 6337P Athens GA 30604. Tel. 1-800-959*8273. BANGOR, ME A Hamfest will be held from 8 AM-1 PM at Harmon Elementary School. Flea MarkeL ARRL VE Exams for all classes. CW Contest. More. Sponsored by Pine State ARC. Talk-in on 146.34A94. Contact Roger W. Dole KA1TKS, RR 2...

Free Ibm Shareware And Ham Catalog

Morse Code Computer Interfaces, 49,95- NEW TWO METER Mobile Antenna Pattern Switcher for two vertical anlennas. 59.95. DYNAMIC ELECTRONICS, Box 896. Hartsetle AL 35640. (205)773* 2758. FAX 205)773-7295. B N B615 MORSE CODE MUSICl-Do Aerobics, Sing, or JogT while learning code Sensational new discovery and now the secret is yours Order THE RHYTHM OF THE CODE cassette today 9.95 pod KAWA RECORDS P.O. Box 319-S, Weymouth, MA 02188 The HIT of the Dayton Hamventiont BNBS24 WANTED Kenwood R600...

Bnb

GROTON ELEC* TRONICS, Box 379, Groton MA 01450. (508)448-3322. BNB310 ALL OF THE FOLLOWING WORK GREAT on 160M to 1QMr Unique indoor outdoor antenna gives 30dB gain, complete diagrams and instructions. 6.95 complete SSB CW receiver kit, 9.95 HF SW receiver preamp with 35dS gafn, factory wired, 19.95 HF VFO kit, 14.95 rock stabte SOW CW transmitter kit 19.95 lOOW version, 29.95. All above are 16GM-10M ar> d are completely transistorized, each kit contains all parts and...

International

Arnie Johnson N1BAC 43 Old Homestead Hwy. N. Swanzey NH 03431 The spring blahs have arrived It's between winter and summer here in New England as t write this (April 3). also known as Tntid season. i keep looking out my back window hoping to eventually see white snow repfaced by the green of grass. t also look at the tree limbs tying in the yard, still covered by some snow and ice. Several of these iimbs caused my 160 meter dtpole to return to earth, along with the limbs. Luckily, the wire didn...

Serious Candidates Only

Blazing high-speed packct ft jr 80 with theTAPR 9600 baud FSK modem G3RUH K9NG compatible. Soptu eak-d four-layer PC boani fir minimum noise and small si7je tits iaside Tiiiiiiy TNCs. Modificatiifns Tzqiuned for ttiosr nuilios. Add the bit icgen t option uid create a Hill-duplex 9600 baud repealcr the next logical step in kx il packet ofx.r,iiioni. Ii tml> makes 00 baud fa t and friendly (Kit require b knowk-dge of r.idio operaions.) Contact TAPR for dcLiils and a brochure on all our kits...

Circle On Reader Service Card

Subscribe to 73 Amateur Radio Today Call 800-289-0388 WTul xiuki TOir > 11 tlli romk I trvd Iht fci i(i tin Ji ho* dnJ Itv hip in tlv vtindtm wiirt a aaiJcd Uii Onh ihj TV m tlic ttc cuntkl hi if 11 nic h iin ivii h in tJmjiiljuip just kilty im hb null wus lalklii m itvltj Si* I pill < HV up iltifiil V Supv-rHnu I when all ihL vnc hus*. led 1 wiLli Nim rn ertiin-* 20m 59 -Him ST 75orS0m S J IMm Si 3 A NO-RADIAL VERTICAL THAT COVERS 80 OR 75 METERS No, we won't insutt your intelligence by...

High Power Rf Switched Preamps

Model 146 16QW 2 Meters 9db Gain .75db Nf Model 146031G0W 2 Meters 19db Gain .75db Nf Model 440 70cm 100W16db Gain 75dbNf Alt preamps have helical fitters to prevent out ol band intermoduiation in the receiver Model 146 covers the eniue 2 meter band. Model 146GS is of very narrow bandwidth and would be suitable forSSB. Packet, or Satellite, Model 440 is factory tunable from 430-440 MHz or 440-450 MHz per customer requesi. Alt models are powered with 13 to 20 VDC and are mounted at lhe anienna,

Miss

ACE Communications 6975 Hillsdale Court, Indianapolis, IN 46250 Service & Support hours Mon.-Fn 9AM to 6PM . Sat 10-4 EST Masiefcaid. Visa. Checks, Approved P O s a COD add 5.50) 1 AM EX, Discover Prras. specifications and availably subject to change Bat rale ground shipping and handling charge only S5 95 per unit. Express Air only 0 95 r for most units, to most locations One week trial no returns accepted two weeks after original y receipt wrlhout substantial restocking charge AIJ units...

All Electronics Corporation

Box 567 Van Nuys, California 91406 FAX 618 781-2653 73 Amateur Radio Today June, 1994 59 Photo C. The offending signals were being transmitted from the airport to this smallyagi, halfway up the tower in downtown Freetown. Photo C. The offending signals were being transmitted from the airport to this smallyagi, halfway up the tower in downtown Freetown. KD6KQ decided to do some signal analysis first. WFtti the service monitor, 1 took a look at the spectrum he went on. I saw all sorts of...

Circle On Reader Service Caro

A L Houghton WB61GP San Diego Microwave Group 5345 Badger Lake Ave San Diego CA 92119 Surplus Local Oscillator for 2400 MHz OSCAR Satellite, or SSB Operation on 2304 MHz This month I will continue with the converter aspect of microwave operations and identify a parts bonanza of GaAsFET and bipolar circuitry. Usually, lindtng GaAsFETs in surplus is rare that is, other lhan TVRQ devices like LNAs. What I am about to describe is some of trie best material from surplus that I have seen, Irom both...

Grove

Changing the way you to hear the world operating power directly from the PY array. The rate ol flashing will be determined by several factors, such as the charge Current from the array and the condition or the battery. There is nothing critical about building the JV1RP4. El can be built using any method you're comiortabic with. This includes the u amp e of pert' board and dead-bug construction . However using the PC board designed for the MRP4 speeds construction. The PC board makes...

Custom Madehand Tooled

Leather products with your initials, name, catl letters. Photo s amp estimates available. Key rings, wallets, belts, purses, hanging signs, specialty items GREAT GIFT LEATHER amp WEST, 67 Causeway RcL, West Swanzey NH 03469. 603 352-6256. 9-4 pm. M-F ET. BNB215 SUPERFAST MORSE CODE SU-PEREASY, Subliminal cassette, 12. LEARN MORSE CODE IN 1 HOUR. Amazing supereasy technique. 12. Both 20. Money back guarantee. Free catalog SASE, BAHR-T3, 150 Greenfield, Bfoomingdaie IL 60T08. BNB221 with rack...

Tip

You can change the TIP T12 to a power MOSFET 1 you wish The pins of me MOSFET will fit the same holes as the TIP 112, Change R10 from 2.2k to 100 ohms and R11 from 47k to 100k. Nothing else needs lo be changed for this modification. You can use just about any tow RDSon power MOSFET instead of the TIP 112, I've used an IRFZ44 in the past with very good results. For more current capacity, there are two extra pads on the PC board for a second 1N5821 diode in parallel. A PC board is available irom...

Cf

835 MHz 10 MHz fitter amplifier, 10 times the pick-up dis tance when used wjth our counters or R-10, The R-10 is a unique FM Communicatfon Test Receiver with secu rity and surveillance applications. 30 MHz to 2 GHz. Measures deviation and relative signal strength. Demodulates FM Tunable band pass filter covers 10 MHz to 1,000 MHz. Tunes continuously over more than 5 octaves. Increase pickup distance 10 times. Ultimate Security Sweeper 5 Ship Handling Max 10 U.S. amp Canada. 15 outside...

Ds

Schematic far the MRP4 Solar Con ml Circuir ure I. The heart of the project is an LM324 op amp, Only three of the tour amplifiers in the chip arc used in this project. To determine the state of charge of the battery, we monitor its terminal voltage. Resistors Rt and R2 divide ihe battery's voltage by three- Amplifier D buffers this voltage before passing it along to amplifier A. This amplifier is configured as a voltage comparator. The buttery's terminal voltage, now divided by three,...

Qrx

If you aren't finding enough challenges in ham radio, perhaps you'd like to dabble in a growing technology that could very well make you rich. The water-fuel phenomenon called Cold Fusion has prompted Publisher Wayne Green to faunch a full-color glossy magazine bearing that name to help springboard research. The 96 page premier issue hit the newsstands in May, You may remember news reports of the cold fusion breakthrough when its discovery was announced at the University of Utah by Drs. Martin...

Jhuii

The Fox Hunt Attenuator is available fully assembled for 49 plus shipping S3 US. 55 Canada , For more information oj to order contact Arrow Antenna, 1461 Peacock Place, Love-land, CO 80537. Or circle Reader service No. 206 Transmit Battery Saver Repeater amp Simplex Operation Optional Digital Display Mic with liS Meter 1 ilo other dual band handheld beats the HT-530 on features for performance and ease of use. With the largest backlit keypad available, 82 memories, exclusive Dual CTCSS Decode...

Down East Microwave

FM, 902 1296 2304 3456 MHz 2303 PA 1 OmW in 3W Out 1240-1300 MHl 5130 231B PAM O.SW in 18W oul 1240-1300 MHz S205 2335 PA 1QYY in 35W out 1240-1300 MHz 325 2340 PA 1W in 35W oul 124 lt M300MHz S355 2370 PA 5W in 70W out 1240-1300 MHz S695 3313 PA lWin20Woul 902-929 MHz 5275 3335 PA l4Wm40W Out 902-920 MHz 5335 3310 PA 1CfnW in 10W oul W2-92BMH1 150 432 PA 70mW in 1SW oul 420450 MHz 180 50 - 222 Mz version now available Writ Tffl Switching available, aJM3.B VDC Some available In...

Para Que Sirve Intelligent Interconnect Cs 700

Intelligent Interconnect 700

Increase range or distance from a transmitter wtfi a Band Pass Fitter lt 1 dB pass band insertion loss LP-60 D080 MHZ Usage 69 BP-3 Above 3 filters SAVE S30 171. PG a CC-90 Case for ail models H B TA-90 Telescope BNC antenna 1 C TA 90-L Telescope elbow antenna 1 jJ D RD-150 150 MHZ rubber duck 1 E RD-2750 27-50 MHZ rubber duck 2 I r I HH V lQl f RD-800 800 MHZ rubber duck 2 ' G M-207-IC interface cable for MFJ-207 1 H P11 200 MHZ. 1x 10x probe 3 W SB SS mhJiMSi J LP'22 Lo-Pass. audio usage...

Wux

TRIOOOXLT 389,00 AM Broadcast to Microwave 1000 Channels 50ORH2 to 1300MHz coverage in a programmable hand heid. Ten scan hanksT ten search banks. Lockout on search and scan. AM plus narrow and broadcast FM. Priority, hold, delay and selectable search increment of 5 to 995 Kliz. Permanent memory. 4 AA ni-cads and wall plus cig charger included along with belt clip, ease, ant. amp earphone. Size 6 7 8x1 3 4 x 2 1 2. Wt 12 0Zh Fax fact document 205 2016 Channels 1 to 1300MHz Cattpuua-Cartroi 62...

Info

The video viewing room features an 8-foot projection TV screen and a three-gun Chroma tux video projector. The videotape scene shows a newscast describing John W82LLB and Barry N4MSJ I to r operating during Hurricane Andrew. Photo C, John's video wali contains a variety of muithstandanj VCRs and TV sets that can view and record in PAL, SEC AM and NTSC Photo B. The video viewing room features an 8-foot projection TV screen and a three-gun Chroma tux video projector. The videotape scene...

Communications Electronics

We're introducing new Uniden Bearcat scaiv ners that are just what you've been searching for. Order your Bearcat scanner today- on Uniden Bearcat 8500XLT,1 2500XLT, 890XLT, LRD9000W1 I Celchmic our 2 h anniversary wilh sj con savingnn Ihc scanncr Jindl m roiii elector fountl jjt this ihJ. rjiis cougun must he included wilh yokirl Ipcepiuil cmler. Cndii cxtdi and quantity ttisenunis ait excluded Iromj diis effrr,Offerv aiid nl y n cider nuiLc I dim tyIdmenuni N iniI Ekttfonki tut, P.O. Boc 1045...

Butternut Electronics Co

BOX 1234, Oldlito, TX 78575 210 350-5711 305 771-2050 FAX 305 771-2052 5821 NE 14th Ave, Ft. Lauderdale FL 3333 Worlds most highly advanced hand he'd D g tal iter Reduces fa se counts - no loss of sensitivity Dis i Auto Capture - auto hoid amp store works even near strong RF Fields Stores rind recalls frequencies Fast - 550 million counts oer second for high resolution - 250 MHz direct count Ultra sensitive fccvgraph 16segment display Multi-Function Counter with Frequency, Period, Ratio...