Spectrum

* Stand Alone or use with your controller 10 40 Watt Units 2M,222,440 MHZ Super Sensitive Selective Receivers Unusually Good Repeat Audio Proven Performance throughout the World REPEATER W 1S0 WT. 2M Amp & 30A POWER SUPPLY, (All items available separately) Call or write today for details and prices Get your order in A.SAP. Sold Factory Direct or through Export Sales Reps. only. For that new Machine Spectrum makes 2 tines of Repeater& -the Deluxe SCR1400 and the new basic low cost S-7R...

Sweep

AVCOM'sNewPSA-65A Portable Spectrum Analyzer The newest in the line of rugged spectrum analyzers from AVCOM offers amazing performance for only 2,855. AVCOM'S new PSA-65A is the first low cost general purpose portable spectrum analyzer that's loaded with features. It's small, accurate, battery operated, has a wide frequency coverage - a must for every technician's bench. Great for field use too. The PSA-65A covers frequen cies thru 1000 MHz in one sweep with a sensitivity greater than -90 dBm...

Icom

R 5000, TS SOS, TM 241 A 441 At Tfr751 A, Kenwood Sconce Repair TS14CS, 7B690S, BZ-1. TS-790A, TS950SD. TH-7SA+ TU 8 48A, TM-WA, 7M-741A, TM-732A, TM-641A. TM-742A, MARINE RADIOS ICOM M7 Mil, M56. M700TV, M80Q AVIATION PORTA LE ICOM A* 1 MOTOROLA MARINE KING KX 99 SCANHERS AQR 900.1000. t5 X S , 2900, 3000A

Repeater Controller With Autopatch

DTMF controllable, long distance phone number reject, four control output lines, two courtesy tones, switch-selectable CW callsign. Kit includes assembled tested board with Intel 8748 MRU, LEDs, TX, RX, phone, power. For info call or write to JOHN BELL, 1381 Saratoga St., Minden, NV 89423 (702)267-2704 BNB10H AMATiiUR RADIO REPAIRH most makes and mod* elsT discount labor rates until June 1995. WESTERN AMATEUR RADIO REPAiR CO., John Rupe, Bo* 697r North Cove, WA 98547. (360) 267-4011....

The Ham Contact

PO Box 3624, Dept 73 Long Beach, CA 90803 Cft r tSKionts Add 0 1 4 Sales Tan AEa& ka Hii -m nnd Ch ri -.fi.nn ftp aide nts please send IJ S. Monoy Ordc r * Si 7.io lor shipping If you wtsh more iniormetion please send a SASE lo the above acdress. For COD orders, can i3ioj433-506o. outside ol CA Orders OrHy ens (B00)933*HAM4 and leave a message. Build this easy gadget and listen in on HF. There are many ways of using a converter as a simple method for receiving HF broadcasts. Typically, the...

Info

a a-+44 a I ilrrtii a - +-r-r I- I- i 3 - 4--r -fc a fa 5 Personal Computer Repeater Phillips Industnes. Inc. Pofyphaser OSO Quantum instruments 75 Quorum Communications 29 Rad KD Radio Radio Ramsey Etectronics 21 ' 254 Ross * RT 36 Scrambling News 167 Sescom, Inc 75 188 SGC 300 Shirts by Ray Sarno 91 244 Software 250 Software 325 SoideMt Company 75 51 Spectrum Communications 47 69 Spectrum Electronics 65 183 Spectrum International ., 93 * Die Ham Cemer 77 384 Ttie Ham 384 The Ham Contact 53...

Mance

Sirio has designed the new HI PERFORMANCE line for the discriminating Radio Amateur. These antennas are the very best available in terms of material quality, hitech design and maximum performance. The result of years of experience and technological research by Sirio All models are fabricated with the very best materials available to guarantee maximum strength and best performance. Year after year. Sirio whips are very flexible and incorporate a custom inclination system that allows them to be...

Vis

For you You won't find to it'p Ik jted bfChnical jargon Iwic Jusi in formation you use righl i -ay. v u'II dticover hdw to ai mhje jour o n RTTVAMTOft I se RTTt jjiJ ASiTOR to ulk 10 anuieii thioujiluul the Compete in RTTY AMTOR couess Hum fw& giLdDX AR3754 Radio Frequency Interference How to find 11 and fix It. interference probiert are challenging, bji curable. With the techniques in this book. > ou can hejp jeiiure ehutnoic pcacc in your netjilihortiood. sisjoo AR4661 Antennas and...

Pll

Ftw'WHI 3 CKI 134CHT 3 7 I 255 when the peak white LED just begins to light. No signal should give a value of 0.5 on the display. You can also adjust peak levels while receiving pictures5 if you have GOES or Meteosat receiving capability. On these satellites there are lots of transmissions with 10 seconds or more of continuous peak white or full black. This allows adequate time for you to get that adjustment screwdriver in there. With NOAA transmissions this is a little more difficult as white...

MFJ

For a lowt low 19.95. you gcta ri' i performance 2 Meter 5 8 wave ground antenna you'll get the maximum yain of any single element antenna. More expensive 5 8 wave ground planes can't work any better no matlcr how much they cost. You gel. . , shunt fed matching that bleeds off unwanted static and gives you low SWR ,., strong lightweight aluminum construction low loss ceramic antenna insulator, MFJ's Rapidlune radiator , MFJ's one year No Matter H'tar guarantee. It mounts on 1 to Vh inch mast...

How To Use Coils Mfj29

. . smooth reduction-drive tuning simple-to-use The MFJ-259 gives you a complete picture of your antenna's performance anywhere between 1.8 and 170 MHz you can even check SWR qui side the ham bands without violating FCC rules. Set the bandswitch and tune the dial just like your transceiver, SWR is displayed instantly RF Resistance Meter' Does 2 1 SWR mean 25 ohms or tower and watch SWR change For free manual write or call MFJ instantly as you make each adjust- . k Jt AmAVherr ment. You'll know...

Circle Qn Reader Servie Card

Box 2503 Fullerton CA 92633 Chopsticks, silverware, plasticware or your fingers You can eat lunch with any of them. Your choice depends on where you are and what you're eating. Similarly, there are many methods for tracking a VHF signal, and more than one will work. Such factors as simplicity, cost, stealthiness, sensitivity, response timef and the nature of the signal come into play as you make your equipment decision, Doppler units are the weapons of choice among radio...

W H

Bandstop filter is to remove offending signals. An example is In communications systems where transmitters and receivers on two different frequencies are co-tocaied at me same site. A re cerv amp f on frequency F1 win have a foont-end bandstop filter on frequency F2, I.e. on the frequency of the co-located At frequencies lower than microwave bands filters are often designed using jumped inductance and capacitance L and C components. In me microwave bands implementation of filters is through...

Cor Repeater Controller

Features adjustable tail and time-out irr amp rs solid-state reiay courtesy deep, and local speaker amplifier krt 549 CWiD, Diode programmable any time in the field adjustable tone, speed, and timer, .kit 59 on one board CMOS logic tor low power Consumption EPROM programmed specify call kit 99 w amp i 159 en one board Digital c records up to 20 seconds of your voice Can record multiple id messages Tail and time-out timers, courtesy beep, solid-state relay to key transmitter kit 99 w amp t Si 49...

Micromike

Smaller ihan a sugur cube mc' battery and mihe Two sets parts supphed in case ycu are clumsy Terrific audio pick-up pin drop ai 5 ft andtransnul range o 3K ft We include the battery watch style , eWei mite and even a luning tool1 Be a James Bond and learn SMTioo FM-5 Micro mrke kiU , , 19.95 Oei-ciamWe most scramble systems fieiflj on your scanner a-iO or set up your own scambled communicaiior svstem over he piiow or raoio. Latesi 3rd generation IC s for aud-o...

Not Mola Radius Commercial Raemos

U 00 MAJtON MOTOflOLA. YAESU FTHMOa Oae UN I DEN. REGENCY. KING. MARINE ICOM M 7. M 56. M700 AVIAThCN tCOVI A 1 A200 M T TAD Patches letephone calls from your radio To phone line, Great for making arxJ receiving prions calls where there are no phone lines. Simple to use. Write or fax for inquires. U Hi mate, transpon able telephone communication terminal. Make and rece ve phone cafajax. lete anywher- in the world where there are nq phone fines SmaJi. compact with i 2 rneief...

Circle On Reader Service Card

73 Amateur Radio Today April, 1995 71 PIN diodes to short the exact center of half-wavefength coax lines going from the common point to the feed point of each whip. Since an electrical quarter-wavelength of coax acts as an impedance transformer, an apparens open circuit erists at both the common point and Jeedpoint when the diode conducts. Some RDFers nave suggested that terminating OFF whips with 50 ohms would minimize reradiation and give the best pattern. However, ELNEC analysis showed that...

Ufetime Warranty

WIRELESS CABLE - 1FT5 - MMDS - Amirn TV Ullra High Gala 50tt Tuneable 1,9 to 2,7 Ghi. 55-Channel Disti System 199.95 3e ChanriS Dfsh System 149.95 20-Channel Dis i System 1 4 95 Opiicual Conimircia frnfl .nenn.a i nol st nj A a i L1 00 Yagj AriferinjB Cnftiportfettts Custom Tunmc Available - Call if wft fSASEj fw FAEE Cstaluy P.O. Bam 053-3 - Scnttsdale, AZ 85252 602 947-7700 3.00 Credit all phone orders MaslErCanl VIm American Eipfs CDD Qumhty flncinj