International Radio Inc
international Radio Inc. announces the IRI Tuning Upgrader which comes in three models for the TS-440, the TS-940, and the TS-930. The Tuning Upgrader lets you fine-tune incoming stations with ease, yet also move across the bands in seconds. Uses low-power CMOS circuitry. Has a speed indicator LED. Comes with clear instructions for installation, Correctly installed, the R Tuning Upgrader will not void your Kenwood warranty. If you do not wish to do the installation yourself, International Radio...
Silver Cloud Electric Train
Realistic Railroading There's nothing ike the excitement of an electric train lo bring back memories, or to stir young imaginations Be the engineer of this fun-filled HO-scale Model Train Set by Model Power featuring a lighted F-9 diesef loco An overstock means tremendous savings for you. Take advantage of the LOW liquidation price, order this ready-tewun tram TODAY. Perfect for enthusiasts 8 to 80 Powerful F-9 L ghted Locomotive 3 Cross-Country Freight Cars Plus Red Caboose Cars May Vary From...
Is
not designed for continuous high power transmit operation. The three-minute timer actually runs closer to two minutes and 15 seconds. At the end of the time-out period, the transmitter is interrupted for a moment, and the receiver resumes scan mode. This initiates the transmit cycle again. The tuning control, and all keys, including thePTTand UP DWN switches of the microphone, do not function while the TW UQOA is operating as a repeater, When the DCL System is operating. Code Squelch Operation...
T
he CES 51GSA-II is an automatic microprocessor-controlled telephone interconnect autopatch that provides telephone access to mobile and portable radios operating in simplex, half-duplex, and full-duplex modes see sidebar for explanations of these modes . But it's more than an autopatch. With built-in 10 capability, ii can operate as a repealer controller, and has provisions for limited remote control of external devices as well. The first thing I learned about the Smartpatch M was that you have...
Thmks Thdxs
t03BAS tO BAS T55 amp AS Oi amp AS 05BAS MS 7 2S 7 3S model i iii i op section model -1 lop section 10' seclton model 3 Or -i rop section ID' section iO ma si. o d 43'sei' s-upaortiri wit supporting 61 seif satJpOftrng JO M f Support 43 sell supporting 6 it jl pck I 'iq 4G se r supporting 43 sell supporting a CUT wm SPECIAL 00 galvanized 7 scrsna 500 galvdniied 1 strand Junior Thundflrbirii 'ThLniid'e, lt tiird1 . rtiunde bird' ihundBrtMiif Eiplorm '.J 'ri amp artd beair 30 M On. EkD U MonQtunc...
Preamp
GAIN 13dB N.F. 1,2d 12VDC 40 ma 250.00 MMk 1691-137,5 GAIN 20dB TYPICAL N.F, 4.8dB MAXIMUM 12VDC 80 ma 330.00 Send 75c 3 stamps for detailed specs on al VHF amp UHF products. Shipping FOB Concord, MA PRICES SUBJECT TO CHANGE WJTHOUT PRIOR NOTICE SPECTRUM INTERNATIONAL INC. lt 5 P.O. Box 1084S, Concord, MA 01742, USA
Mfjc 1
Don't leave home withoul this mobile tunerj Have an uninterrupted trip as the MFJ 945C extends your antenna bandwidth and eliminates the need to stop, go outside and readjust your mobile whip. You can operate anywhere in a band and get low SWR. You'll ge maximum power ot 1 of your solid state or tube ng and it'll run cooler and fasi longe Small 8x2x6 inches uses little room. SWR Wattmeter and convenient placement of controls make tuning Fast and easy while in motion. 300 watts PEP output,...
Zip
The Nye-Viking MB-V-A 3000 Watt Antenna Matcher A tuner is a tuner is a tuner. Right Wrong The transmitter or linear amplifier may be happiest when looking into a 50Q resistive load, but most real-world antenna systems don't provide this. One ol the big measures of tuner quality is its ability to create an acceptable load from a variety of antenna systems. In 1984 I found myself with a six-slinky dipole, three to a side, fed in the center with a 4500 ladder tine. The 4 1 balun handled high...
Info Kbb
lUfO 0ie 9 M- S FAX S 7Bi-2 S3 W-4 MUM ORDE3 ilO.M 'iuahirriesi uuit d F0Pth l OfiDFJia MCUW auificiepfT VAU HUVS S PLI1 VTiDA BLVD. VAU NU YS, CA 1411 Simt-r-iaoB F0Pth l OfiDFJia MCUW auificiepfT Low pass T.V.I, filters from Barker 8c Williamson All above to match 50ohm transmitters and antenn .is Quaif Commonicotkon Products Since 1932 10 Cariai Street. Bristol PA 1900 M
Oct
The GE Astro Space Division ARC will operate WB2JGIR from 1400Z the 30th to 02002 the 31st from the first Martian landing to commemorate the 50th anniversary of Orsen Wellsr Mercury Theatre ikWar of the Worlds broadcast, Suggested frequencies CW 3 535,7.035.7.135, 14.035t 21.135, 28.135 MHz and phone 3 950, 7 235 14.285, 21.355. 28,400 MHz, as operators and conditions allow For OSL and certificate, send QSL and legal-size or 9 x 12 for unfolded certifi cate envelope to Alex Montare KA2VLP Astro...
Digital Filter Design Program
for OPTIMAL Flfl filters of 3 10 128 stages PC Ciones. Lists coefficients, plus Jisi and plot of frequency response With manual. 45 SASE for details. Paul Seiwa NB9K. 61 . Tiiden Dr., B ownsburg. IN 46112. BNB784 WANTED old and unique bugs, such as Vibroplex Zephyrs, Dow Keys, and McElroy bugs. Smiley White POB 5150, Fredericksburg VA 22403 WB4EOB. BN67B5 KiTS PARTS PLANS We have hard to find parts Variable Tuning Capacitors, Tuning Coils, Crystal and Magnetic Headphones. Germamum Diodes....
Elenco Products
MO-1252 35MHz Dual I race S498 MO-1251 20MH7 Dual Trace 349 w Two lOx 100MHz probes, manuaf S-3000 tOM Hz fully calibrated S239 P-2 Scope Probe 100MHz 23,95 P-1 Scope Probe 65MH2 19.95 GF-8016 Function Generator with Freq. Counter Sine. Squareh Triangle Pulse. Ramp, ,2 to 2MHz Frequency thru 10MHi FuHy Regutated, Short CircuiT Protected witn 2 Limit ConL 3 Separate Supplies Frequency, Period Totalize, Self Check with High-Slabitized Cryslal Oven Oacillaioi, 8 Digif LED Dis Multimeter with Cop....
CIRCLE ON READER SERVICE CARD Cmy
Receive amp Transmit AM FM Radio Faxcimile View Satellite Image on Graphic Display Zoom and Pan Around Image Print to Epson IBM Compatible Printer Works with Hercules, CGA, EGA Monitors Plug In Board for IBM PC or Compatible W. Boylston, MA 01583 h 617 835-2722 Ever time two hams get together at ieasi one says how about if we were to make this great product to sell to hams not realizing that the ham industry4 is probably one of the best possible ways to guarantee poveny. No, not ill hams are...
A Unco Electronics Inc
20705 South Western Ave., Suite 104 Torrance, CA 90501-0 213 618-8616 The NEW Generation of T.T. amp T. Hand Held Transceivers From Alinco Are Just Around the Corner Introducing The DJ-100T 2 Meter Hand Held Transceiver Tiny 1-3 16 D x 2-3 8 W x 6-5 8 H Tough 6.5 Watts With Optional EBP-8NAZ Nicd Battery Pack Terrific Features arid Benefits LCD with Switchable Backlighting Easily Accessible Dip Switches For Encoding Sub Audible Tones Battery Save Draws 15mA For Extended Battery Life CAP and...
Communications Electronics Inc
P.O. 8ox 1045 Ann Arbor, Michigan48106-1CM5U.S.A For orders call 313-973-0860 or FAX 313-971-6000 Photo C. View of the piggy-bach MOSTEK microprocessor with the touchtone decoder. Tone Decoded LED is in the foreground. CES continued from p 14 to the phone line. A six-foot cable with a modular plug comes with the unit. There are two circuits in this unit not found in many autopatches. One is a VOX circuit that detects when the person on the phone is talking. This varies the sample rate in...
CIRCLE ON READER SERVICE CARD Wku
' . 141 nnnvm IVaitn W . .- L,.I- If Measure Up With Coaxial Dynamics Model 83500 Digital Wattmeter The Generation Gap is filled with the new EXPEDITOR, the microprocessor based R.F. AnaDigit System The EXPEDITOR power computer. - .you make the demands, it fills the requirements. Programmable forward AND reflected power ranges. Can be used with the elements you now have. Compatible with ail Coaxial Dynamics line sizes and power ranges. 10 scaies from 100 nW to 50 kW Contact us for your nearest...
Tenna Phase Iii Power Supplies
CjrpuH 13 S- DC - 3amp tor T imp S r ge p ectror c tead pr leen -si j ai auto ese tuse p'sieciw PS4 519 9D Fully regnal 3 8 VDC 4 .-imp con-siant with su'-ge protection, overload pro- Fully regufated, 7 amp conslant 10 amp surge capacity PS 12 - - i i i i i lt lt 34-90 Fully regulated 10 .imp ccnsiani 13 amp surge, altijtrfinic vericad prptB tion w insiant AiAQ resGl PS20 , , S64.9Q Fully regulated 20 mjj t r capacity, 13 B VDC i amp consign ' with meifr Regu- red4 -15V0C-25 Ampconsant...
Kenwood Us A Corporation
2201E. Dominguez St., Long Beach. CA 90810 PO. Box 22745. Long Beach. CA 90801-5745 144 220 450 1300 MHz . tm-321a covers 220-224.995 MHz, The Hottest Selling Compact TM 42mcov 43e 449.995 MHz The all-new TM-221A, TM-321A, TM-421A and TM-521A FM transceivers represent the l lt New Genera-tion gt T in Amateur radio equipment. The superior Kenwood GaAs FET front end receiver reliable and clean RF amplifier circuits, and new features all add up to an outstanding value for mobile FM stations The...
Cma
Deerfield, IL 60015 312 459-9040 800-292 7711 ASK FOR CATALOG 15 Day Money Back Guarantee 2 Year Limited Guarantee Add to Postage iSiQ mao iL Fles Tax CIITCLMMl-f fit n- L - U lib' T T L LL irl h. Of L f Ii TQ t I all Figure 3. The lambda loop antenna a , with 1 1 coaxial balun deiatts bl CIITCLMMl-f fit n- L - U lib' T T L LL irl h. Of L f Ii TQ t I all should provide a starling place for those who wish to duplicate this antenna. Two stacked hatos increase gain and lower the angle of...
Carolina Windom 1
SEETHf Sft-.VttW l Jl M M WORLD RADIO MAG UlNE Enthusiastic users say it's the besi wire antenna. Outper forms wire unfcnndis previously used Knoi. k you oeks-Qfi peifotmnncefiti 80-10, STObeam I f v i u hear one vcru U want one Made with pride by the RADIO WOKK yn A 1 A THE ORIGINAL DIGITAL VOICE KEYER The chcuce of contestera worldwide i gt iff r rhe IstV uir . . cintr . gt ihrfluly il - -. -perfflLnn tA t hC i a. Voirr nnr. jru outui S I t- m rtcufl ed pr . r u Uly 1f Ami i ui KjuJm...
Ft
FrtG.M O FflfrWOO FT THH FT lWRh F' 20 HM FT JOJflu FT QH i Ht lTw OKT.C't 4 hTTfllTM Vae i im use auicu n m. 'm a n ntn ri n d -icu J nu Qnii c ryfjjiHj m mirKa gt tri l'y imM40 ni NEW CPU I TJit 'hm du4l ha nd HTim Accurately verify a wide range of inductances with this simple project. Ihad tried building various inductance bridges in the past. Most of the designs worked well on the larger inductances, but are best described as flaky in the lower, microhenry' ranges. Having collected my share...
Give Your Ears A Break
Enccaer Oecooer use .urn SSB CW FIV AM Novice q extrd Encoder sencte 2 strings of dEts at precise speed, 225 combinations Decoder mutes speaker ui ti signaled Buiil in speaker Alarm gnabla ciJtpu Mobile mousing bracks 13 amp VDt Easy ro ftMtff Gfeat for mob-ie To se usi Trrft rwts eic Send y. cai far compile infD Ormr 1-800-338-9058 Irlo 503 687 2118
Jabco Voicegate
QUALITY HAM SHAREWARE SOFTWARE tor the IBM-PC and compatibles. Many disks for all aspects of ham radio. Business SASE for catalog. JK amp S, Dept. S gt P.O. Box 50521 Jndi-anapolis, IN 46250-0521 SNB793 KENWOOD 430s OWNERS Stop Scan stops the scanner on busy frequencies resumes scanning automatically after an adjustable 1-10 second delay SASE for 1989 catalog S19 95 it 29.95 assembled S3 50 shipping JABCO ELECTRONICS R1 Bo 386T Alexandria, FN 46001. BNB794 VOICEGATE communications noise...
Please Print Clearly
The Most Used Accessory in An v Station IT QSYer s effortless, tight ning-fasi frequency selection opens up ycHj rig to its full potential Whether you're con-tesilng, DXing, cage hewing, or mobiling you II do il betlei, faster. and easier and htive more lun with a QSYer IT QSYer s effortless, tight ning-fasi frequency selection opens up ycHj rig to its full potential Whether you're con-tesilng, DXing, cage hewing, or mobiling you II do il betlei, faster. and easier and htive more lun with a...