Servicing Rf Products

Signals picked tip by the low capacity Input of the Spectrum Probe allow rapid evaluation of probiems. Simply placing the probe near a component allows judgment of whether it is active. RF failures are easily established. A cordless phone (base station) is probed near its 38.970 crystal in fig 4 8oth 39 MHz and its second harmonic are obvious The fowest line at 10.245 is also obvious and can be estab-fished by probing the adjacent 10.2 crystal, which then shows 10MHz as higher levei than 38MHz....

Light Beam

.-'OP rn 30 fest rnth cl upio' 4 mi leasing ImMft UlR 30kH earner lor hum free upd i.nn hfl 'i it 11 s mm tflndOW 6lC 'dtf.ii In- or li lMiinq tu MJ 'eux tituntrflfa 1rw mi tcr hi , rffriiliv* inptir rrf.r.uP jSBi WH De- HdMwH ipeitr output Unts opviKiw if j hsfiM up ra *> r m le io any 1 in broad i*i rditio Stnsiitvi inpui accsptvuiy typ flf iimhe wiEl pick uft normal voices IG iter si H-.'j lis ing fh ,tvnH i Id I j1 r 1 un i mectrii i kfij- ' ' jt O iilts n 9- TOC

Call Or Write For Special Quote

When i jrrfes rg F AST DELiVEPV HONEST DEAI NG and PROMPT DEPENDABLE S E-H V ' C E & ac*-u We on 1 iist advettise > t WE GIVE T* In 1937, Stan Burghardt (W0IT), because of his intense interest in amateur radio, began selling and servicing amateur radio equipment in conjunction with his radio parts business We stand proud of this long-lasting tradition of Honest Dealing. Quality Products and Dependable d'S-E-R V> l> C-E 1 Above attT we fully intend to carry on this proud tradition .vilh...

Personal

Ihm, h-K--. bajubills modal funflst ar virtual. mi oeraiiis.I MJC hz wiih r 1 r lEU ii'u - i1 e -d-Dul i*p speeds in < tj iwK pu r u- ur te .s -. - Lirartctoutyvt pvmrtv iguaduildoppta th i * t VDC i uitf jH omafcy 5jew3> ijflfiicsi i i pf wtanoo* A try usAJ val

Radio School

112-page textbook two stereo code teaming tapes sample 5 wpm Novice code test over S50 in radio manulactureiV discount coupons. 2 theory tapes, 2 textbooks, FCC Rule Book, 4 code tapes, code oscillator set, examiner test packet, and over 450 In radio discount coupons. 6 cassette tapes make It easy to learn tt> e code from scratch, This Technician course Includes 2 theory tapes and 1 Illustrated textbook, 6 code tapes, 4 theory tapes, and 2 textbooks. Ideal fof upgrade from Novice to General....

Portable Packet

Only 1.3 X 2.6 X 4.5 NOW YOU CAN HAVE YOUR PACKET AND TRAVEL TOO Open Squelch DCD circuitry for faster, more reliable performance * Compact size * Attaches to your belt, handre-talkie or handheld computer * Rugged construction with superb RF shieEding ino birdies rn your radio) * Standard battery pack provides over 12 hours of operation * Advanced Personal Mail Box & KISS mode included * 32 k-byies of RAM * Complete with belt clip, cables battery pack A charger comprehensive manual * 30 day...

Spain

Woodson Gannaway N5KVB EA Apart ado 11 35450 Santa Maria de Guia (Lbs Palmas de G,C.) islas Cananas, Espans My first visit to the Union ol Spanish Amateur Radio Operators (Union de Radioaficianados de Espana, U R E.) clubhouse in Las Palmas was an eye-opener. First thing I heard was a iheory class in progress with about 15 students. Nearby at the bar. several people were reading the Latest issue of the U.R E magazine. In the next room, a packet station was shaping up. Lots going on. The U.R.E....

Info

70 35 70032 0 39 70072 70093 70 06 70067 70 04 7 200 TlI iffJfrr add Sci-H ewer 2. b 2 CQVCTi S3.25. 3 covers AZ resicJe-nti ado saie fca* Eiiclose this ad witfi jmur onder for 3 ih-coyri . Call or vsc-ie Len KB K X GAUTHIERS' COVERS PLUS p.O. BdX 495 Prescott, AZ 86302 602-776-9711

Frequency Counters

Iwnirnnriiiici mi nr n mn< ri tihwh < wrrriwif it pTwl re jrc i ncajr-11rtit rs in i .z.i r c - mraug n pnen A of our coftrri i luii ont rvrantv on arijarni Jabw AtUkflgrtitpndv moeHig tfw lar i mmutac mrr ol Id* con timerski Uns wllr* USfl Compjrr specificattDr t)i.r toumers arc i.fii f(iiit reii ifom 4iuJi o to -UHF wiiti Ftr ni n impedance input, proper wave shaping circuitry arw) durable high epoKy m ' pralErS-ir.fi PC Board con ln ' fjn AD)wMI arp KGS manutadurpd in the USA

ICOM

ICOM does it again by combining Lop performance on all HF bands with deluxe six*meter operation in an ultracompact and easy o-operate transceiver Six-meter DXing rasters Sensitive 105db dynamic rang receiver is terrific and the IC-< 26 is your key to great all mode Panel-selectable RF preamp and attenuator Built-in IHHHI through six-meters snortwavel H reception from SOOKHz to 33MHi plus 46,2 to 61.1MHz 100 watts SSB and CWr 10Hz digital frequency display 26 memories tune full range and...

Super Yaesu

SUPER VAESU FK& 4SH 12 -OitS QOQma double tne capacity of the Yaesu FNB 4 5 watt output Rapid charge only S7t 00 SUPER YAESU F*B 3S. 9 6 vote, I200ma triple rhe capacity of the Yaesu FNR-3 3 5 watt output Rapid or wall charge S65. D 0oth are perfect for the 03. 09 and 721 series radios and ire 4 inches high. Kenwood PB-2 25H. 26 S25.00 tram BP 3 I1B.95 full line for Yaeiu 411 811 47ft FNB-10'l 1 12 14 available. Add shippfngA f< r irst paot C residents add ff tax Complete hne of NI CAD...

Mo

* Htgfr CH* 'my SmiLihrtl) * BKV Ac- Ian i')i - K-V Qptrtdvi < f inp < Dela d T ng ni ah tobpet ntate prate WMi& 'inanua andS rai 2 tt lot E ensa tpfrt wertd wtit mrTinty i r w., nt fa- M MfltcW ao C - 0' is la* L w i cjSTont v rr* trv) m ny r T I ' ciacpfi 35F 67 iff 0O& OA 73 6Q V 75 itL A 77F - Wye CALL FOB SPtciAi reiawG X tail** I* Frifl Onrimt nd Effektiv usa X tail** I* Frifl Onrimt nd Effektiv usa

Circle On Reader Service Card

Jensen's new catalog features tiard-to-find precision tools, tool kits, tool cases, test equipment and computer accessories used by sophisticated hobbyists, scientists, engineers, laboratories and government agencies Call or write for your free copy today. 158. 7815 S. 46th St Phoenix, AZ 35044-5399 (602) 968-6231 Software Systems Consulting 150 Avenida Cabrillo, Suite C San Clemente, CA 92672 (714) 498-5784 1 urn your JBM PC or compatible into a complete slow scan TV system You don't need...

Super Performance Batteries

SUPER ICOM BP7S. t32 volls 12QGma triple the capacitv ol ine icom BP-T 5w output SUPER ICDM BP BS 96 uoSTs i20Qma 501 mofe capacity than the Icom BP S Both are rapid base charge only or slide in wall charger. 4 inches Jiigh. BP 7S or BP-8S S65 00 SUPER KENWOOD Exact replacement FNB-2 Nicad pack SUPEH KENWOOD PB Z5S PB-26S.3 4 tor Vaesu FT-4MR 2D7R 208R 706R volts. 9G0ma, double the capacity f the PB 25 PB 26 lor the 2500 2600 3500 3600 Charge with either the standard wall charge* or drop in...

Tape

On the chance I might make a contact. The results were amazing, in a few hours I had worked stations in Texas, Mississippi, Illinois. Minnesota, New York, Florida, and Wisconsin, as wel as a couple of local California stations, one 30 mtles distant. Signal reports were very good, and 1 was pleased with how uell the antenna worked. Ten meter FM was so much fun, I left the antenna as it was for several weeks and just enjoyed myself. It was dear that this antenna design worked well, but I wanted...

Basic

To save lead length, J mounted it through a hole in the circuit board, and the switch itself attaches the circuit board to the front panel (Figure 2), The batteries arc held by dips mounted on the back panel (Photo D) the clips are lined with vinyl tape to keep the batteries from slipping out. The simplest wa to read nut the frequency of oscillation is to use a frequency counter (Photo B). Make sure the reading is stable and is the same w ith the countcr > et on more than one range. You can...

Circle It On Reader Service Card

Engineering Consulting computer controlled Ham Shack See system variables, control & reprogram all via packet Ultra Comshack 64 Repeater Controlfer HF & VHF Remote Base*Autopatch*CW Practice*Rotor Control *Voice Meters*Paging*Logging*Polite ID's*Packet Voice B.B,S, FT ST 767 9M.TX 7At TS g4 1 HS 7t1 VHF Includes Interface, disk, cables, Manual Co Mrolfer Features 'Chanae variables remotely from louchtonft or Packet 'Unlimited voica vocabutary * Alarm Clock auto aitecule Individ Liiai 4...

Circle Oh Reader Service Card

TVcrti ZEmeStt DXH S WTf iica-K 1 Im tire J tbf J rtti- 3C .'l'J-f. Iti aiiTiT hiil - -J-iri (LJ ra'i Mtkei Bit Ac DX ton i b T> i ' o nice. Vh it tcAil . tt*e TV* H ailgntr t riffr-'akf hiiit Jt nf ' th Li r Ac It bn r ci ill H H M 15 M _ * H M M SJ9.95 S t.95 S49,95 S '15 Bc< ct Fr,-.- ui 30 -925-7373 HAND-HELD PHASE 5ENS ANTENNAS FOR VHF DIRECTION FINDING. USES ANY FM XCVft. COMPASS GIVES DIRECTION. ARMS FOLD FOP STORAGE. TYPE VF-142 COVERS BOTH 2-MTRS L 220HHZ, OTHER AVAILABLE, WRITE OR...

Rep Repeater

If you always thought a computer-controlled repeater had to be expensive, LOOK AGAIN You could easily spend this much just for a controller. As always, Hamtronlcs strives to give superb performance at modest cosV. In this case, a premium repeater with versatile computer control, autopatch, and many dtmf control features at less than many charge for a bare-bones repeater We don't skimp on rf modules, eltherl Check the features on R144 Receiver, for Instance. GaAs FET front-end, helical...

Automatic Antenna Matcher

The ultimate advanced technology P.O. Box 502 Ft, Laudtrd l f FL 33302 (305) 523-03 TuVaDTTDM lhtE. MMtOM' Pr tONG KNOWN POP OUAIITV AU CiOTLfBES - S vOW VOUR 0 F'OR WAV 4 fir POWER TUBES. TRANS S TORS. FE MURING REPLACEMENT PARTS FOP Elf tAC VARtflN PEW A GE MOTOROLA ETC

Only

For comp i ete < nio & 530ctfiC& UQOM 813 ET4-2980 To Ofder Tolt Fr 1-800-223*3911 PacComm 3652 West Cypress Street Tampa. Florida 33607 please send HandiPacker More Information FREE Catalog MONEY BACK GUARANTEE Add 4 00 Shipping handling per order FL residents add 6*c sales tax Major Credit Card give number expiration and signature 813-872-6696 Photo B Note the Peter Daht Hypersil transformer the heart of this beefy amplifier. ter showed 3700 volts during idle and 3500 volts during...

Such A Tiny Radio

ICOM's new S Series mini handheld deiLver tup perfonnanceon the 144.220 and MOMH Sand- * it h saper easy operation and a kaleidoscope of features. Built to fit your n ds today, tomonm anv-where and anytime. Flexible Size And Power. The 1C2SA packs 2,5 watts with supplied BP-82. The IC 2SAT SSATand4SATs internal batten' packs 2 watts of output on high powr. All models deliv er five watts u hen puvercd via optional BP 85 batten pack or v ia lop-mounted h.t vol socket A > mai ng with a big punch...

Rev

Here are your new mobile companions - at your service whenever you're on the road Their compact size makes installation a snap, and the remote control options allow you to customize your installation for that professional look Wide band receiver coverage. The TM 241A receives from 118-173.995 MHz. Transmit range is 144*148 MHz. (Modifiable for MARS and CAP operation, permits required.) TM-441A covers 438-449.995 MHz, and the TM-531A covers 1240-1299.995 MHz, CTCSS encode built-in, selectable...

Special Features

SOLID STATt ELECTRONICALLY REGULATED FOLD-BACK CURRENT LIMITING Protects Power Supply from excessive current & continuous shorted output CROWBAR OVER VOLTAGE PROTECTION on alii Models except RS-3Ar RS Ak. AS 5A. RS 4L BS 5L MAINTAiN REGULATION & LOW RIPPLE 31 low line input Voltage HEAVY DUTY HEAT SINK * CHASSIS MOUNT FUSE THREE CONDUCTOR POWER COftD except tor RS-3A ONE YEAR WARRANTY MADE IN .SA

New

UptofiEPROM programmed messages Adjustatie audio, speed & interval time' * IDover voice inhibit Low power option Modular design Message selection via binary input TTL levels The ID-2B provides required station identification without troublesome diode programming. The ID over voice inhibit circuitry allows for courteous operation by not allowing an ID until the next squelch closing

Circle G On Reader Service Card

ID info, etc., in your own voice without saying a word Create messages by talking into your Station Mic, then replay them instantly at the touch of a button. Up to 5 varied-length switch-selectable messages. ' Soft Sector pushbutton enables instant reprogram of message lengths - up to 1 minute (up to 2 minutes with additional memory chips ordered below . No Key' switch enabfes Record or Replay message 'off air Messages heard thru built-in monitor speaker....

BNB

WANTED Ten-Tec 544 transceiver with 262m power supply N1 GOV Geolf Burns, 101 Ranloul Si . Apt 21 V Beverly MA 01915. (508) 927-4120. BNB961 MACSAMUEL MORSE CODE TUTORiAL SOFTWARE for the Macintosh , Speeds to 90 wpm Standard or Famsworth mode. Random character and word generation Random OSO simulation. Also, send code from your own text files Send S22 00 plus 2 00 shipping and handing to Avant Systems, P.O Box 5437. Pittsburgh, PA 15206. BNB962 112-page textbook two stereo code teaming tapes...

The Rf Connection

SPECIALIST IN RF CONNECTORS AND COAX PL-259 USA UHF Male Phenolic, USA made 3 .70 33-ISP-1050 PL-259P*ienolic. Arnphenot .89 33-822 PL-259 Teflon, Amphenol U5 PL-2 59 ST UH F Maie Si I v& r T ef I on. USA 1.50 UG175 Reducer for RG 58 .20 UG-176 Reducer for RG'59 & MIMI 8 20 UG-21S U N Mate RG S. 213. 214 large body 5.00 99 13 RN N Pin for 9913, 9086. 8214 fitsUG-2lDflJ & UG-21B U N's 1.50 UG-21D 913 N Mate for RG-S wstti 9913 Pin 3.95 UG-21Bf99l3 N Male for RG- with 9913 Pin 5.75...

Amateur Television

Designed and built in the USA Value + Quality from over 25years With our all in one box TC7CM 70cm ATV Transceiver you can easily transmit and receive live action color and sound video just like broadcast TV. Use any home TV camera or VCR by plugging the composite video and audio into the front VMS 10 pin or rear phono jacks. Add 70cm antennaJ coax, 13.8 Vdc and TV set and you are on the air. it's that easy TC70-1 has > 1 watt p+e.p. with one xtal on 439.25T 434.0 or 426,25 MHz, runs on 12-14...

Alnco

VoCom MiragefAlinco Tokyo Hy-Power TE SYSTEMS Amplifiers 4 5 8 k HT Gam Computer Interfaces Antennas tNl STOCK COMM HClAi. 4 HAW RtPEATtm STOCKED WRITE FOfl QUOTES Kantronics KAM.KPCII. KPCIV, ta Engine DVR 2.2 G G ELECTRONICS ART 1 Air Disk, SWL1 Morse Coach Stocked MFJ-127 B MFJ*1274t MFJ-1224, AEA PK-38, MFJ-1278T, PK-232 MBXm0T0R0LA AUTHORIZED DEALER W FAXp DRSI PRODUCTS KACHINA COMMUNICATIONS DEALER Kantronics KAM.KPCII. KPCIV, ta Engine DVR 2.2

We Ship Worlowide

WORLD WIDE AMATEUR RADIO SINCE 1950 Your one source for all Radio Equipment May We Help Vou Wilh Ihe Best Ln Commercial anil Ama-leut Radios Lew W2BIE. Toni, Kitty WA2BAP, and Jan KB2RV, KITTY SAYS WE ARE NOW OPEN 7 DAYS A WEEK. Monday Friday 9 to 6 30 PM Thurs, to 8 PM Come to Barry's tor the best bays in (own.

Hwq

H fl Fuli Featured K Twin Band Handy We packed almosi alf of the features you would find in a full Sized mobile Twin Binder into this compact HT TheDJ-560T has key board entry, CTCSS encode buM in. several scanning modes. 0 memor es fully programmable. AutoDialer, Dual Dispiay (2 Meier & 70 Cm) The DJ-560T is sitting on The Alinco DJ-100T DJ-120T is Magnificent for its tiny size, but stands up to the competition with power and capability. 10 memory channels store offsets and subtones. Has...

Aircraft Receiver

He* ei ifa(N *rcrjn ccnummicj ion -o*0j uq ptjinesupta KM im* my fltcctws Q6MHf JW mr tjafic vir aero lunrt iup rhitdmflrr wjinAGC y. imclnier am) uialie .qu'lcn Huns ci'- DV bnltery. b jti* tudioau pul Tyv Sumiliuilv i-, i rs mj . n m AFlb mine l ltycHi uki il iirivtfh 'e Kitu sscr fleflUiriphiiCS and Jiumiriu.n knytH loi a iftfli prgiewionai look Compaci-great lor airtfiow* or rat juii plain hanging around Itie Bkpwt

Cm

AHrrtL ITA t 13.70 AhTTOH 30W t B .U Jld U mV MC3.M 041 1*3V. 1 II II IBJT* )HW ti I HOSfth M Wau PEP -S il*._- 1 10.OS lU gtrflt 1D0 Wall -Porl MOP ATV3 J 0-4SC Ft l* S- FE It ATV* M J-DJB tliAS- FfTpr Wt *J*4 if W H p> 4 - 14- fin part I CHIP CAP -K,m fATC METALCL AD MICA CAPl-tM F POWER TPMIStSI OHS MFNl CRCU1T 501-1 -StK'Mll i rs Wut t Mothl 07 i A 1 UO.OS K it HF Pi -KB ham t 1 h .00 4V rldbl< rrt fall or KESar-lHMHIU'll r * 0.00 For del lied iH uniiliun Mid I Qt fut krf h * h1 (D ....

Spectrum Communications Corp

Germantown Pkt SlO Morristown, PA 19403 * (215) 63M710* TELEX 846-2111 FAX (215) 631 -5017 circle si on reader service card by Jonathan I. Mayo KR3T .an efcceilpttt piece of work WeB worth reading for bosh the expCFfejiCCd ami iht new packa-teer . iht de E 3 n i t i ve gu ide to ainia teur packet opcrjiuHi. 03G09 * Shortwave Clandestine Confidential Fascinating reading- -covers all Clandestine broadcasting. country fey i l> urar lelJs I rcqullticics. other unpublished information...

Vswr

0 lo 50 degrees Celsius operating SO To 60 degrees Celsius storage 12 VOC ladapier included. North America oniy When mounted at a half-wavetength above ground, however, the DX performance was noticeably better in the horizontal orientation One interesting characteristic of the IsoLoop is that for signals received equally on the reference antennas and the IsoLoop. the background noise was generally lower on the IsoLoop, On the roof of rhe industrial building, a number of signals that were hard...

Circle Oh Reader Service Cahd

Heavy Duty switch for true 1 Kw POWER - 2 Kw P.E.P. Ceramic with Coin Sifver Switch Contacts Single Pote, 3 Position, Desk ot wall mounl A l unusod positions grounded +C5r3& - UHF connectas 440,50 * *CS-3G-B JC - 5NC conr edoTL 43.95 ' Sngte Poief 5 Position All unused positions grounded Simply The Finest In Battery Charging Equipment Qua I it if . -, . By Design Automatically prases mew. and rapid Charges any Ncad Bantry up to 15 votts GfEatr> i*-wongst3 i We Changing rate simply...

Drt

The Alinco DR-570T Twin Bander has dual LCD readout, volume squetch and tuning controls Double barrelled power with 457V on 2M and 35W on 70 cm, plus simuftaneous receive on both bands or intermix with four (nodes of scan. The DR-570T wilt win the battle' with its illuminated front function panel and LCD readout, readable in any lighting conditions. Don't let the Tiny DR-570T fool youi it's fast, and , - _J L i j .' ' j j- ST H leaves the competition in the dust with many standard features you...

Nb

Volume 1 -Hardware. Volume Software, either 34 95 Voiun 3 ProfectS Software, Volume 5 Documentation or Volume 6 Experimentation. 44.95 each Volume 4 Repair, 99 95. Volume 7 032 Hack-ing 54.95. Cabld Hacker's Bible 34.95. Clone Hacker's Btbfe 34 9S Catalog S3 00, CODs < 602j 782-2316 TELECODE. PO SOX 6426-BB Yuma A2 85366-6426 BNB938 GROUNDING THE AMATEUR RADIO STATfON. Step-by-step, 12-page itlus-ireted guide Down to Earth instructions ONLY 7 ppd1 KB4UGW+s SHACK...

Sidekick Antennas

Models Dual Extended Coilinear Elements Stainless Elements and Hardware Side Top Mount Tower or Mast Excellent Gain and Quality Easily Stacked Broadband - Tunable SQ-239 Feed With '1ST Connector and Silver Plated Feed Probe - 11 Walnut St. Marshfield, Mass. 02050 No Extra Charge for VISA-MC Shipping Handling add 4*00 Mass. Residents add 5

Ef

1 (713) 729-7300 or 729-8800 FAX 1 (713) 358-0051 ALL fTEMS ARE GUARANTEED OR SALE PRICE REFUNDED New Kenwood TM-941A Tri-Band FM Trades Wanted Kenwood 731A Dual Band Mobile, .Call Penta 6146B 12.00 Penta 3-500Z 99.00 Penta 811A * 12.00 CSl Private Patch V 489.00 831SP-PL259 Silver plate (Amphenol). 1,50 82-61 N Male (Amphenol) 3.50 82*202*1006 N Male (9913) 3.50 Yaesu FT-757 GX II Call New Kenwood TS-950SD, All Mode, HF Calf Van G rden G5RV 44.00 Bird 43, Elements Stock CaM Receiving Tubes...

State

One Neuronics Place Mmeraf Wells Texas 76067 (017) 325-1386 One Neuronics Place Mmeraf Wells Texas 76067 (017) 325-1386 Figure 4 Ihe vertical, coaxial dipoie. Photo B A trim, inconspicuous, hut hot performer. Notice the connectors between the pieces of PVC pipe. Leave about six inches of extra wire at the end of Ihe pipe, where the 014 wire exits the hole. Remove a section of insulation about A lon , and tin the bare section. Then wrap the wire around the pipe for four turns, evenly spacing it...

KENWOOD

State-of-the-art technique that maxi mizes your transmitted RF energy. * Built in TCXO for the highest atat r I Built-in electronic k& i ,r I 1 * 100 memory channels.Store intie- JL M IV pendent transmit and receive frequen- *W T* j j ciesT mode, filter data, auto-tuner data I j 11 I I I 12 IP * Digital bar meter Additional Features * Built-in inter-C face for computer control Program- 1 CXll Vl I mable tone encoder Built-in heavy I dutV AC power supply and speaker Adjustable VFO tuning...

Accessories

COR-3 REPEATEH CONTROLLER Kit Features adjustable tall time-out timers, solid-slatt* relay, courtesy beep, and local speaker amplifier 49 CWID - 1 Diode programmed any time n the field, adjustable tone, speed, and timer, to go with COR-3 - 59 NEW C0R*4 kit. Complete COR and CWfD ail on one board for easy construction. CMOS logic for low power consumption Many new features EPROM prograrnmed specify call 99 NEW C0R*4 kit. Complete COR and CWfD ail on one board for easy construction. CMOS logic...

Every Issue

The entire run of 73 from Octot> erf 1960 through fast year is available. You can have access to the treasures of 73 without several hundred pounds of bulky back issues. Our 24x fiche have 98 pages each and will fit in a card file on your desk. We offer a battery operated hand held viewer for 75, and a desk model for 220. Libranes have these readers. Pie collection of over 600 microfiche, is available as an entire set, (no partial sets) for 250 plus S5 for shipping tUSA) Annual updates...

Audio Blaster

Ui6 TH S Audio fir1 p 1 wat ajdio amp Vlher ix nee< ls to be loud installs in 15 Min. Used by police, tirer ENGINEERING CONSULTINGS 593 CANDLEWO D ST. BflEA CA, 92821 TELEPHONE 71 671-2009 FAX 714-255-99B4 accept C. .O.'i MaslerCordTVtS A, pise AMERICAN EXPF1ESS 'Odd S4.00 S H U.S.A. +Cn. residents .hdd B 'Records 32 or 54 Sec. studio quality audio 'Use for auto CO. ID 1aiJ> V nlt> OJf, Local or fOflic conltoi Up to 15 setoctebie messages' Includes 1 Wan audio amp 1 Meg RAM...

Sep T

NJ The South Jersey RA will hold its annual Hamfest al ine Pennsauken High School Gates open at B AM VE Exzrr. registration ts at 9.30 Tickets are Sj.SO rn advance. a the door Vendor tickets are 5 per table plus the cost of admission TaFn-m 1 5 1 69 K2AA reoeate For mfo and trckets contact Jim McGrath HB2IYS, 2 D kons Lane. Ml Laurel NJ 08054or (609) 866-0890after 6 PM EDT. OLD WESTBURY h NV The Long Island Mobile ARC will hold a Hamfest al the New York fnst.ofTech from 9 AM 4 PM...

Com

THE COMMUNICATIONS SERVIE WONiTOfi THAT H WORKS HARDER FOR LESS. Introducinq CQM-3 . the new seivice monitor designed by service technicians fur service clinicians H works harder for less giv mg you advanced testing capabilities at a vety afiordable price FEATURES Direct enlry keyboard with programmable memory Audio JL Trartsmitter fceq jency counter L bar graph fie quency error deviation display 0 MO 000 rv outpol levels High receive sensitivity, less than 5uv * 100 KHz o 999 9995WH Co ntinu...

Pvc Coupler

Repeal this process a* many times as necessary to obtain the lowest SWR. If you are working inside a building you may not get lower than 1.5 1 until the antenna is mounted outside. If you cut too much copper from the antenna (this almost always happens) install the copper pipe cap on the upper element. The cap will fit tightly, and can be adjusted vertically for the lowest SWR. Once the antenna is working properly, solder the copper cap to the upper element. Pull the copper tubes apart an apply...

Maggiore

Manufacturers of Quality Communications Equipment Receivers Transmitters Antennas Standard and Computerized Controllers Standard and Computerized Auto Patches A NEW CONCEPT IN REPEATER DESIGN, THE Hi Pro E' IS AN EXPANDABLE REPEATER WITH THE FOLLOWING FEATURES A BASIC REPEATER WHICH WOULD INCLUDE A COMPLETE RECEIVER. TRANSMITTER, CORfc FRONT PANEL CONTROLS AND INDICATORS, LOCAL SPEAKER AND MIC JACK AND CAPABLE OF FUTURE EXPANSION. ALL HOUSED IN AN EXTREMELY RUGGED, ENCLOSED, 19-INCH RACK MOUNT...

Hew Zealand

Des Chapman ZL2VR 459 Kennedy Road Napier, New Zealand you read this, we will have conferred at our Annual Convention and NZART Annual General Meeting Only two re-mrts for discussion were turned in pnor Io the meeting, one requesting that Ihe AGM direct NZART Council to develop a policy on the desirability or otherwise of Morse coda being a test requirement to Qualify for operation on frequencies below 30 MHz, as is presently the case. Should this regulation be challenged The other remit takes...

Receiving Converters

LOVp natfe conveners tc receive vhr and uhr bands on a lOAfl receiver Choice Of kit with case & SNC acks, ki t w til peb only, or w ft unrt n a ase Oir er models avaifaiii for othw bVout ranges & stv Request catalog for complete fis tings. VHF Input ranges avail 136-138, 144-146, T 45-147, 148-148, 220-222. 222-224 kit less case S39, kit w casa 59, w t in case 89, UHF input ranges auali 432-434, 435-437 kit less case S49, kit w case 69( w t in case 99. 902*928 MHz converts down to 422-446...

Circle B On Reader Service Card

You can create an artificial RF ground and feedback, TV and RFf when you let the MFJ 931 resonate a random length of wire and turn it into a tuned counterpoise The MFJ 931 also Jets you electrically place a far away RF ground directly at your rig no matter how far away it - by tuning out the reaciance of your ground connection wire. MFJ-962C a iew dollars, the MFJ- SOOQttS 962C lets you use your barefoot rig now and have the capacity to add a 1 5 KW PEP linear amplifier later Covers 1 8 30 MHz....

Vjq

An AGC is an amplifier with control over its gain, The gain is varied as the input changes. If it is very rapid (fast as a cycle of the input), the device becomes a compressor. Compressors serve useful functions they control noise and increase modulation density, which allows maximum modulation and lowest noise floor- This is important when communicating in a very noisy channel. If the input is slower, the AGC only averages out the audio level to make it more or less the same. If an actual...

Ju Icquli Co

N E Bfi PVUfl,WAS0OCM Custom* Service Ho 306) 454 7619 3150 Premier Dnw, Suite 126. living, TX 75063 1777 Piwnix Partway, Suite 301, Atlanta, GA 3C34& COM CANADA. A Dnwon d COM America x, 3071 -16 fload. LPnit 9. RxAmond. BC V6X2T4Canwta

Dr

DR-110T. this 2M Alinco. enters the nineties a proven winner with the reputation of best vaiue. The DR 110T packs a powerful 45W on 2M and sports all the features you expect in todays transceivers. Tuning is a snap with the multi-functioned easy-to-see keyboard, 14 memory channels, subtones, scan, multicolored LCD readout, reverse, are a few of the many features of the DR-110T. The mobile of the future-today DR-410T available for 70 cm. 144-147. 995Mhz RX1 37 -173. 995Mhz) 440-449 995Mhz(RX410...

SEP

CALGARY, ALBERTA CANADA The Sixlh annual Calgary Ham Radio Flea Matket will be sponsored by Ihe NOVATEL ARC at the Parkhdl Community Centre from 0900-1300 Admission 2. Tables S2. Talk-in VEGNRC M6 76 simple* 146 52. To reserve a table, send your name, calf sign and 2 id NOVATE L ARC. f020 64U Ave. W E., Calgary Alberta T2E 7V8, Canada. cambridge, ma Tjmlgateelecthonics Comput AjAmateuh ftADio flea markel sponsored by ih& mit Radio Society and the MIT Electronics Research Sociely, will be...

Code Ta

Thwmtitrrnrhr tHfs if frn w A to riw . ,tir mtwfitu iivfl rfHif n y .i it niiih F Mirii 'f mnfir< n< r i wir-fru th iiii W imi hi 11* tfiriJt-H tbfir & nun iht- 1hW2M tvn < ht< rr, j h U*i iirrutift m *Jttp rhnmfb fir avtretnr wr tiftns fert f*tn ihiT fomn iJLf, 41 1 f.iVflCi,. ami hf Si), kftr Proptr - TAfJ ArtL-- jfririf up M Otftff iJiWf *if< rv fbutthh h r> .iti, jvb< t u nfr- Guinxii er v j'Gi'N ral ti'iabout time, (forth (.M-A ilmit,r) und vm'il hf th- rt bejore UUJ jt...

Astron

Astron Corporation has introduced a low profile power supply, model SL-11A, The SL-11A has been specifically designed as a base station power supply tor two-way radios. It is very welt regulated and will provide 11 amps of current at 50 duty cycle. The power supply has foldback current limiting to protect the power supply from overload and shon circuits. It also has an overvoltage protection feature in case the voltage exceeds a safe level The SL-11A is available in black or Contact an Astron...

Revolutionary Compact Design

Nee again AEA has achieved a significant engineering Ibreakthrough with its high-performance, low profile I IF IsoLoop antenna. Performance isn't compromised by its small size. Operate your favorite HF band U 4 to 30 MHz frequency coverage) from areas with estricuve zoning ordinances or apartments and condos. Or take it with you on vacation. . . it's the ideal go-anywhere portable antenna. And it's the only antenna you need to cover to 30 MHz. ONE antenna instead of numerous dipoles and without...

Ix

Batteries are held by clips on the back panel. Line clips with vinyl tape to keep batteries from slipping out, to make a resonant circuit for a particular frequency. If you test an LF transformer, you 'll get an inductance and a distributed capacitance that includes the built-in capacitor. For instance, a 10.7 MH IF transformer that I tested came out as 3.6 ktH in parallel with 60 pF, and according to the table displayed by the program. it will tune 40 meters ii I add slightly more...

Shortwave Receiver

Ih lam& Hc ifttivti hjt u0vr 5 me nark rtii jnur a Cammna1 '4 11 MHi hn 2 MHa bandi, variCtyr i jred. superW (fe 5 ign nvrtn ACC. Hr j. iin co n-irg jruf 90 mw Luthcmuipui UaeAfle Sjgneticit ffllur chip ro le Min j microvuii unsiti v- ry 'uns or. av (Miieiy This is a lauirialing scout uncai or club projecl. and will p'a vide Iwurs > r lun twn ro inn mo& t encu h DX n Add itie. p jii I kn and v uu havs a 1 c*J nn t looh ng

Antenna Products

6010 BldgJ M.Oid Dixie Highway Vero Beach FL 32967 CIRCLE 373 ON READER SERVICE CARt> DEALERS Your company name and message can contain up to 50 words for as little as S420 yearly (prepaid), or S210 lor six months (prepaid). No mention ot mail-order business please, Directory lext and payment must reach us 60 days In advance ot publication. For example, advertising tor the April '90 issue must be tn our hands by February 1st, Mail to 73 Amateur Radio, Box 278. Forest Road. Hancock, NH 03449,

Policies

Minimum order 10.00< Mastercard, VISA, or C,0,D. AH prices FOB Houston, except as noted. Prices subject to change without notice Items subject to prior saie. Can anytime o check the status of your order Texas residents add sales Alt items full factory warranty olus Madison warranty Bird and Belden products in stock. Call today. 12310 ZAVALLA STREET HOUSTON, TEXAS 77065 KRP-5000 Repeater shown with PA 100 Amplifier

Packet Radio

CW r cio mtitrtace Gr mo k vr ttwu e fnftires EX ARC cnipj.it tor rthdfik ap* itwtK uraHf oi .hf n Inp riFflKMhiuir ve PC H',prd In-nccBiify parts antr Ktll tfOtmiwntaiHJf r ia nn FM COMMUNICATIONS 2 MTR. 10 MTR & 220 RECEIVERS '-rvtSL t F-H -eccrMT tun a 5 M i of tnt ijttar ic npfilwE - Mio PC* t *0t WW flf r 'i S K,-* Ci1 t E i 5 l utfl C v* iunmg C PUB ttjgt cenmc * 1 mnand tuu eug r' Itf Tjn 1 jjtf1 i mmtff, njlis on 4 V CFifery O SO mw OijTJMt Qpwai AfiS m ifLien& r ip im and...

Center

S707A Mc lL d Sari Amunio I 7& 23 (& 1 ) 6SD-6tUl FAX (512) C4 7 30(J'.r Mastmounted RF or Coax switched GaAsFET Preamplifiers, Hal tea 1 filtered preamps for out of band rejection 2 meier 19iiB gain - ,75dB noise figure * handles 160 watts transmitted power Model t46 covers entire 2 meter band - RF switched 120VDC Model 14GO S covers a 3dB bwofl.4MHz Model 146CP. 1460SCP and 160CP powered with 12VDC IhrLj coax Model 160 covers 149-1 74 MHz * no helical filter 70cm i6dB gain * 7& dS...

Tower

T f cbrnb aga> n in This tower and levator system, MARTIN TOWERS are made of alum- ur* and specifically eftyne ed for use wirh THE HAZER All bolted construction, no weJds. Easy To inataJI hinge fcase. walk up erection ne* piumt> with raveling bolts in base Mount antannes ancr rotor an HAZER in vertical upright posdion, then winch to lop of to er for normal operating position. Guy wires fasten to HAZER or above HAZEFi af top of tower Safety lock systfim operaies while raising or lowering...

New York

Western New York's fme& t amateur radio dealer featuring PCOM-Larsen AEA-Hamrronics-Asirori New and used gear 8 am iq 5 30. Sat and Sun by apijomimeri . VHF COMMUNICATJONS. 280 Tjtlany Awe.T Jamestown NY 14701 r (716) GM-63*5 E> cte Reader Serv es nu ix r 1 more rnfotmai'on Manhattan's largest and only ham and business Radio Store Featuring MOTOROLA, ICOM. KENWOOD, YAESU, AEA. SONY, BIRD TEN-TEC. etc Full stock of radios and accessories Repair lab on premises Open 7 days M-F 9-6 30 pm Sal...

J

MFJ1* new VHF tuners cover both 2 Meters and the 220 MHz bands. T ey nandJe 300 warts PEP and match a wide range of impedances for coax fed antennas SWR Wattmeter. 8x2' ix3 in MfJ-920. 49.95. no rneief. 41zxZ ix3 inches Box 494h Miss. State, MS 39762 (601) 323-5669 TELEX 53 4590 MFJSTKV

Al

Massive power supply capable of 2500 watts for What makes the Ameritron AL-1200 stand out from other legal limit amplifiers The answer a super heavy duty power supply that loafs at full legal power - it can deliver power for more than 2500 watts PEP two tone output for a half hour The heart of the AL-1200 power supply is a highly efficenl Peter Da hi tape wound hvpersiP transformer weighing 32 pounds, it's equivalen to a 45 pound transformer using standard FA laminations, High current computer...

Arrl Books

By Witfrtd K Carim Advanced amateurs, antennj design engineers, technicians. Most comprehensive bttok written on Using Smith Charts m solving impedance maccfeing probEcms, 15 (HI R2472 * Tune in the World wUh Ham Radio Kit(flthed) Brand New Edition Easier tore& L revised lent cover * Ihe question pools on Nov tee exam giver on November 1 I9S9 and bier, Code teaching and tfode-practice cas-sc ties irK l uded in the kit 419. Oft V ai uabl e a id < 0 th c R F des ig n e ng i neer,...

Astron Power Supplies

R5-4A S 36,95 AS-7A S 49.95 RS-12A S 09.95 VS-20M 124.96 VS SSM 174,95 VS-50M 232 95 BELDEN COAX (Performance not problems) 9913 low loss, 50 ohm RG-8X 9258)t 50 ohm, Foamt RG-213U (8237), 50ohmhmtl spec. AG-11AAJ (6261). 75ohm RG*a U (8237), 50 ohm RG 58 U (8259), 50 ohm RG-a U (8214), 50 ohmf Foam. RG-59 U (8241)t 75 Ohm R& 214SU (826fl), 50 ohmr double shield. Don't settle for less than the bast. Call us lor Selden. Solid 12 ga. 0 12 ft Solid 14 ga SO 09 ft. Slrarwied 14 ga . SO 10 ft....

Ust

Including Receiver, 10' Antenna, 40' LNB, Poiarotor, 18 Ball Actuator, 100ft. Cable & Connectors and Toil-Free Installation Help. * 100 financing available to all credit approved customers. Call for immediate credit approval over the phone. We make it easy the popular satellite systems and components, as well as programming.

Contact East

The new supplement to the Contact East General Catalog is a reference guide for engineers, managers and technicians It offers a wide range of reliable brand-name products for testing,, repairing and assembling electronic equipment This update in* eludes many new products linear power supplies, analog digital oscilloscopes, inspection products, soldering desolder-ing equipment, temperature humidity chart recorders, static protection products, and many other items. AlII products are described in...

Jrael

Ron Gang 4X1MK Kibbutz Urim Negev MPO 65530 Israel in this country of about 1,000 licensed radio amateurs, and maybe half thai number operating an active siat onh 150 cailstgns are registered users of the two packet radio BBSs here. Since it was first introduced in Israef only five years ago, this mode has grown in leaps and bounds, A handful of dedicated packeteers, mainly in the Haifa area, had then started a BBS and digipeating. but as this computer-age mode caught on ihe IARC look...

Meters

Nolhlng match the KRP-& OO for otai performance and vtlu*. Not GE. not tv n Motored. Rf performance realty co-jnts Er jy htqh pe or manee oper i n i riigh repestef environments so th KRP-5000 recetver gives you 7 helical re& o- aiors i poles of if tittering iinri a precise S 'imMi trigger squeJcn wi h automatic threshold sw tch-nt, rtransmitter gives i cleant v- feT po i t- 1 v.itf. rerrtpif piQgranrm rtnv iiy. sequential tone p jgjng auiopatch. reverse autopatch. 200-ruimher autodial...

L

Front panel of the AL-82, showing the dual meters and controls. acute operator anxiety and frustration, particularly when sparks fly and smoke comes out of t was impressed by the quality of the components and the mechanical installation of the various parts, Nothing was loose and all the solder work looked good. The cooling fan is in a cast metal case and the tubes have chimneys over them. No overheating should occur Interestingly, a check with the Ameritron factory in Toledo, Ohio,...

Radios

SSB'iitciwstor JS- f (f Dr Mhv dire- c convir ,ion -design 11 .i m i NEGQ rL Iflaiu r ed i ri fj > I j.ncJ Aflfli. tUwdbotiki Less Ifla 1 a v nsitifl y. v J rat tu1 flmdnhjnBd bU mw .ludiQ Ouipul fluniGnJVDC twtflf gamtonlrol This kii is very easy to bum otiiollutiind educational idftat far 1 tu upg inner u WiEpWpro tub option ji lulling Use k il feaiu rf s .i ug gee A5p ij U if cast wftfi - i ri g aph c, intluflefl i re m h afefttmra kimfet i, i*sto Mirsfttfl p'olest r ad...

A

Plenty oi cvt-rtap VT sein nine, raonii.inng, CAP ana MARS use. 1C-2SA IC-2SAT GtoMHz Rx U0I50MH Txfll IC-oSAT J beeps and display > catling stations cod All ICOMs 4tS Senes' handMds arc su parted by an extensile line of optional battel packs, chargers, cases, speaker mics and otb access ries See tht cv. ag new ICON -nir verses a pur amfrmrt COM torn** me. Z3B0-1 flt teBua w* 98a 315t fter E> 26 m T> 50 1777Rieren * Sale20* ASafHuAX COW CV.O* i t SO*CC* * X'4 Jr-*...

SG

SG- -. p3 TJI Ch tfiT I . lUW i DtjJlHn C sumltf ti Fi'H in Uicd anO itarf flUull p'iMnirr l P-SJS wIlhQul mtltfi tlS Fi'H in Uicd anO itarf flUull p'iMnirr l P-SJS wIlhQul mtltfi tlS ACN TO ft HD AND PPOGBAM COMPUTERS WITH THIS KIT FNCt DfJ Al Bort UMfTttrfT IWOn Montiol GF 80 6 FuncNon Genetalor rnifreq Counter Startna > .- V T ii JT m 4 -M- tW Ifl*- CkJ Fkwl ttMcfnitrtnlifUU H kj WE WILL NOT BE UNDERSOLD rf 1 & C C4I pC IXP UPS Shipping s,a ,5 o'd , 1L 60015 (S10 Max) L Hos., 7 Tax f...

Superfast Morse Code Su

PEftEASY, Subliminal casseUe 10 LEARN MORSE CODE IN 1 HOUR Arna mg new supereasy technique S10. Both SI7 Moneyback guaraniee Free catalog SASE Bahr, Dept 73-3, 1196 Citrus, Palm bay FL 32905. 0NB531 SB-220 221 OWNERS 20 detailed modi which include 160-6 metef operalion, QSK, I enhanced p.s, 50 rebate lor new mods submitted 9 pages of 3-5002 lech info 11 postpaid Info SASE, BOB KO-2LAREK WA2SQQ, 69 Memorial Place, EJmwood Park NJ 07407 BNB581 ROSS' SSS5 USED September (ONLY) SPECJALS KENWOOD...

Circle On Reaoer Service Caro

Easy 12 volt hookups for your mobile gear When operating a mobile or portable station from my car I always wind up asking my self the same quest ion Where am I going to gel additional 12 voll lines for the transceiver and the amplifier '1 Aside from the obvious safety considerations, this is one of the universal problems uith running an amateur TV transceiver as a temporary portable mobile sLarion. You may also need lo run other ham radio gear in your vehicle on a temporary basis. For example,...

Ckk

Three pots control the characteristics of the AGC amps. allow you to reduce the range of the AGC. The fourth pot controls the output level, This convenience make* matching the ncxi stage easier. The small PC board fits easily in most units. Any sime construction method, however, will work. The two 5534 op amps are put in one 16-pin socket. The CdS cell is super-glued to a standard red LED with ihe top portion filed ilat. almost uniie LRD junction. Optical coupling is pretty tight. The...

Wafhb

Don't risk your rigl VE1GM Easy 12 voil hookups for your mobile gear. AH2AR 6 Why buy when you can build . N KDD Inexpensive alternative to industrial heat guns 29 10 Meter Base Station Antenna A circuit with wide applications. ., KA9NEH Anspare rnouni that's always ready KC3YB

All Sales Final

ARRL, Alinco, Ameco, Ameritron, Antenna Specialsts. Astatic. Asiront B& K. Q& W. Bencher, 8ird. Butternut. CDE. CES. Cushcraft. Eimac . Henry Heil. Hustler. Hy-Gain leem, KLM Kantromcs Larsen MFJ, Mjfler Mjrage. Nye. Pafomar, RF Products, Sagten, Shure, Tempo, Ten-Tec. TUBES. Vaesu, Vibroplex, Duplexers, Repealers, Scanners, Radio Publicalions. Uniden, Kenwood, Maxon. RFC. WE HOW STOCK COMMERCIAL COMMUNICATIONS SYSTEMS ham DEALER iMOtirRESINVITED PHOME in your ORDER A BE...

Tv

F ure 3 7 tj femperafwra control arcu i modified for negai ve 19 von ope for compatibility with commercial brick type microwave oscillators C L Houghton WB61GP San Diego Microwave Group 6345 Badger Lake SanQtegoCA92t19 Brick Oscillators and Crystal Multipliers Some oi you have sent in comments end questions about microwave brick oscillators (see the December 1969 issue) and microwave oscillator multiplier strings. You want to know which type of oscillator, the commercial bnck or the crystal...

Other Radios And Accessories

BC53XLT-A Behren 10 chann * scanner S 11 4 95 AQi OO'A Plug n well cnar er for C55XLT 5 4 95 PSOOf A c gatelte i> gMe' caW ior BOSSELT S 1 * 95 VC001 -A Carrying caw for BC55XLT Si 4 95 BC70KLT A Saaxjr 20 channel scanne- S t 59 95 BCl 72KL-A Be tc i 20 channel scannet St34 95 SCI Af Searcar intormaiior scanner 'Tb CB S T1 3 SC310A-A Bearcat information Rad-o S 9 BC3 30A-A Bearcat Information Radio Si 04 95 UC102-A Regency VHF 2 Ch 1 Walt traneceivm J1U95 UC20S-A fleoancy VHF 2 ch 2 Walt...

Edi Ted By Linoa Reneau Kaukm

Byonics Balloon Telemetry Ideas

On Juiy 4 the Amateur Radio Experimenters group an Greenville, South Carolina, launched a balloon carrying several radio experiments from a site just east of Greenville. The group has been working with the Roper Mountain Science Center io involve the iocaf school kids in amateur radto, and a number of the kids attended the launch. The K4SAO N4LTA payload consisted of three transmitters 144.34 MHz FM with a voice ID (100 mW), 145.935 MHzCW(10 mW), and 50.086 MHz CW relaying temperalure lelemetry...

Ivp

By Joe Holman KA7LDN and Garth Hitchens KG7GA Advanced Electronic Applications, Inc. PO Box 2160 2O0& -196th Street Lynnwood WA 98036-0918 Tel. (206) 775-7373 Price Class 350 If you enjoy portable HF operation, need an antenna that can be quickly set up for emergency situations, or just plain live in an apartment or tight space that doesn't allow large antennas, AEA might have the answer for you, Their IsoLoop antenna is a 32-inch-square tuned loop antenna destgned to operate from 14 MHz to...

Hs

The increasing complexity of electronic circuits requires construction on printed circuit hoard material 0 er the years, many techniques have been developed for making boards quickly and efficiently. Unfortunately, the new ways have tell the project-oriented ham way behind because not all of the processes arc readily available. To answer the ham's need to be able to make neat, functional and reliable boards, I present the following process. In some respects. the process is archaic and slow, but...

Ground Plane Antennas

CK-MO-MOVISA Accepted ( MA add 5 sales tax) Ma-c t Leavey Af 0. WA3AJR 6 Jenny Lane Baltimore MD 21206 Someiimes mis column works almost too well A few months ago. I published the plea of Robert Dick K6YON who worried about the long-term health of his ROBOT BOO RTTY unit. Now. just as that request is being published, along comes the answer and. as Bob tells it, you'll never beiieve the source- It seems thai Bob mentioned to his wife that it was too bad that the ROBOT people had gone out ot...

Commodore Ham Programs

9 disk sides over 200 Ham programs 16.95. stamp gets unusual software catalog of Utilities, Games, Adult and British Disks. Home-Spun Soltware. Bo* 1064 0B, E& tero FL 33928 8NB917 BATTERY PACK REBUILDING SEND YOUR PACK t 48HR SERVICE ICOM BP2 BP3 BP22 T9 95. 9P5S25 BP . BPS S32.95. BP70 29 95 KENWOOD PB21 15 95, PB21H 21 95. PB25 26 24 95. YAESU FNBG Sl9 95 FNBlO 23.95 527 95. PNB4 4A S36 95. U-DO-IT INSERTS ICOM BF2 t7 50, BP3 S16 95. BPS 22 95 9F7 8 27 50 BP22 S 7 95. 8P70 25 95 KENWOOD...

International

Arme Johnson N1BAC T 03 Old Homestead Hwy N. SwanzeyT NH 03431 Time sure flies when you're having tun This issue is my one-year anniver Sciry writing the column ft sure doesn 7 seem tike a year has gone by The oD becomes easy when the 73 Hambassadors from around the world provide material that is ttmely and interesting l just put it into some semblance of order and language certainty have enjoyed tne past year and took forward to many morr Well. I dido't make it to Ireland this year out I die...

Cjrcje On Reader Service Card

Photo B. The serv ice deportment at Alinco is furnished with the latest in test equipment. Photo CL Alinco has plenty of spare hoards for pans, and boards for swap-out in the event of a tough intermittent. Photo A. The Alinco crew, left to right Vice-President Mark Aforisato. Sen ice Engineer Ahmed Awad. and Sales Manager Gre Pear son KC6LSY. Photo B. The serv ice deportment at Alinco is furnished with the latest in test equipment. Photo CL Alinco has plenty...

Call Today For Special Quote

Cutting the trace pattern from the mask with the knife held at a low angle. Photo D Applying the etch resist on the copper with a brush. Photo D Applying the etch resist on the copper with a brush. Photo E. Etch resist on the hoard with he mask removed. Photo E. Etch resist on the hoard with he mask removed. Apply rubber cement to the copper on the board and to the back side of the paper mask (opposite the trace side). The rubber cement must be spread thin to eliminate lumps, but the...

Aero Data Systems

I, p OeOX93ZS LIVONIA , Ml 48151 (313)471-1787 73 Amateur Radio * September, 1990 67 JoeMoeil. RE. K0OV PO Box 2503 Fufterton CA 92633 For sensitivity, simplicity, and low cosl, you can't beat a quad antenna for radio direction finding (RDF) on 144 MHz and up. Home-brew quads give excelleni performance but they take some time and effort to build and, let's face itH sometimes their primitive ' look 5 not particularly pleasing on a carr Before a fledgling hunter can assemble his new pride and...

Amateur Radio

R-L - L 1111 ' I I - 11 0JB65 The Beginner's Handbook of Amateur Radio 2nd Editon Combirvestlieory and practice in an easy-to-understand format, und provides inftirmation fr i choosm Hid installing radio receivers and transmitters antennas, tran.smission lines, and test equipment, Oi pages. 29 illustralions. S16.HI 10D090 - 1930 North American Calkbook Lists uvtir 500.000 licensed radic amatetirs ill all countries of Norlt America. Cives calls, names, ant addre ss i nfomtat ion. S2K. 0 Compiles...

Uniden

Uniden Corporation of America has purchased the consumer products tine of Regency Electronics Inc. for SI2.000,000. To celebrate this purchase, we re having our largest scanner sale in history Use the coupon in this ad for big savings. Hurry offer ends January 31, 1991. Get special savings on scanners listed this coupon This coupon must i ociuaers witti your prepa d orde Credit cards. personal checks and quantity discounts are included from this otter Otter vahd only on prepaid orders mat le d...

Pf Kv

Jennings USLS-465-5 or equal VACUUM VARIABLE CAPACITOR, 7-465 pf 5 KV max. Gears remove for W'lx V dia shaft o a 5.5Lx 2.3 dia, 3 tbssh. Used 109.50 VACUUM RELAYS with 26 VDC coils Jennings or equal mfg, 2 lbs sh ttt Used __ RB3-2G, DPDT120 Ohm 12 KV peak 30 amps AC-DC. Threaded 1.1 dia base o a3.3H 1.3 dia RE-W, SPOT120 ohm 25 KV peak 25 amps AC-DC 2.3 dta mount ftange, osa 3,3Hx 3 dia 50,tifl DOORKNOB CAPACITORS, Central 850-Senes or equal 500 pf 5 KV, NEW 8.95 1000 pf 5 KV, Prices F O B....

Schees

Inexpensive alternative to industrial heat guns. A heat gun is a valuable addition to any elect ronikker's tool box. Its primary use is to form heat-shrink tubing over wire connections to today's miniature sockets and plugs, and for in-line wire connections. A closely related use involves the melting of solder preforms'1 lor coaxial connector terminations and similar connections. Carefully used and properly baffled, a heat gun can even be used to remove soldered-in components, This is one of...