Ico M

NEW EQUIPMENT PRICFNG AND ORDERS OUT OF STATE TECHNICAL, USED GEAR, INFO 203 56-62 7 24HR. FAX 203 67-3561 Clean and Understandable Voice Synthesizer with 400 + words A IS Pons have bom COR and PL .inpuis allowing off site access changes 24O0 Baud Senal Port allows remote programming of the RLC-li Optional Full Duplex Autopatch with 200 Number Dialer Only 199.95 plus s& h Optional 19U Steel Rack Mountable Enclosure Only 100,00 plus s& h (20) Time Scheduler Slots with Hourly, Daify and...

Midland Land Mobile Radio

Digital hams will be interested in this new. built-in two-way radio modem. Midland LMR has introduced an internat modem for its Syn-Tech XTR two-way mobile radios and desktop base stations that provides a built-in data interface. With the internal modem a wide variety of data sources, such as GPS receivers and other vehicle location systems, vehicle sensors, mobile data terminals and PCs, can be plugged directly into the radto. This integrated radio modem design optimizes data communications...

A D

Ting ready to part with your hard-earned cash for a new station accessory. Figure I shows the hardware configuration of a typical Digital Signal Processing device. The hardware consists of an analog-to-digital converter that takes analog audio output of the receiver and converts it to a digital representation of the audio. Yhe audio is processed in digital form and then convened back to an analog form with a digital-to-analog converter, it can then be amplified by a conventional audio amplifier...

Division Of U Electronic Industries

123 Easl South Street Harveysburg, Ohio 45032 1 fBOft) & 29-8321 Write tor a Full Line Antenna Catalog at Hq Coslf -DEALERS WELCOME-Mad In THe USA fiocau e It Matters Trau& ei Slim Lino Window Mount Kit Transe- Modified Gain Quarte A'ave Artenna schools about ham radio and writing. On the other hand, Caster's book is not being promoted by its publisher. You probably can't find it in ham stores. Fortunately, t noticed it in a 73 Amateur Radio Today ad for MFJ publications via mail order...

Accessories For Counters

Telescopi c sti ip antenna BNC pi ug, WA-10 11.95 High impadance protM , ilghi loading. HP-1 . 16.95 Low-pass probe, audio use, LP-1 . 16.95 Direct probe, genera* purpose use, DtM J 16.95 Tilt ba I, elevates counter for easy viewing, TQ-70 S 9.95 Rechargeable internal ballerypack, BF-4 6 95 CT-90 oven timebase, 0 1 ppm accuracy, OV-l 59.95 SPEED RADAR 89.15 complete Nil SG-7 iw low-cost microwave Doppler dar kit clocks cars, planes, boats, rscs, bikes or any large moving ob- i Operates at 2 6...

Aircraft Rcvr

Fantastic receiver that captures 'he world with ust a 12* anlenna1 Can receive aiiy 2 MHi portion from 4- 11 MHz. True superhel has smooth varactnr tunnng. AGC, RF gain control, pienty 01 speaker volume and runs on a 0V battery. Fascinating Scout, school or club project provides hours of fun for even the most serious DXer For the car, consrder our shorlwave converter Two switchable bands (in MHz range), each 1 MHz wide tuna ble on yo ur car radio d ial Arid so me imerest Lo your drive home...

All Sales Final

AEinco, Ameco, Ameritron. Antenna Specialist, ARRLt Astatic, Astron. S& K Beiden. Bencher, Bird. Butte mut, CES, Cushcrall, Daiwa. Elmac. Henry Heil, Hustier, Hy-Gainh corn. KLM, KantronJCS, Kenwood. Larsenr Maxor. MFJ. Mirage. Motorola, Nye. Pa omar RF Products, Shure, Standard. TUBES, UnidenT YaesuP VibrofJex, Duplexers. Repeaters Scanners, Radio Publications WE NOW STOCK COMMERCIAL COMMUNICATIONS SYSTEMS KAM DEALER 1NOUIRES INVITED PHONE IN YOUR ORDER S SE REIMBURSES...

Ameco Corporation

224 East Second Street Mine la, NY M 501 Tel (5 J ) 74 -5030 Fax (5 16) 74 1-5031 am products available rec ly pisase adc 2 75 lor S S H Please wite or cal 'or complete catalon ana or ce fis, CIRCLE 29 ON HEADER SE ft VI CE CARD 73 Amateur Radio Today* September, 1993 31 Everything you ever wanted to know about digital signal processing. * Designing Digital Processing into several police communication systems over the last few years produced some definite improvements in the quality of these...

Amsat

PO Box 27 Washington, DC 20044 301-509-6062 La Quinta Inn & Conference Center Arlington, Texas Your BEST chance to learn how lo work The high orbrt OX satellites OSCARs 10 & 12 The Easy birds RS 10 & 12 Store & forward PACKET spacecraft AO 16, LU 19. UO 22. KO 23 and more coming SOON Now building Phase 3D (The satellite for ALL amateurs SEDSAT E -sy 10 use 2 to 10 meier transponder + tfrgtiai PANS AT (An experiment in amate ur spread sped rum) RS T5 (A new Russian 2 to 10 meter...

Antennas

METZ Utnan. WODU0LOX, TONNA S flernut Wui -Banc YAESU FT-23R 26 76 FT4nE- 11-9ll FTH-200G 700 *T& -50Sh TS450S ATr R-S 00p TS-B5Q& , TM 241 A 441A, TR-751 A Kenwood Service Repair, TSU0S, TS690S, RZ-1, T5-790A. TS950SD, TH-7BA, TH2B 48A, TM-941A, M-741A, TM-732A, TM-641A, TM-742A, MARINE RADlOS ICOM M7. M11, M56r M700TY, MSQQ AVIATION PORTABLE ICOM A-2t MOTOROLA MARINE KING KX 99

Arrl Books

AR1993 AflflL 1993 Handbook (7D1h Ed. chapter*. tcjiunns 2.1 (XI tables, figures and chjrxv t'ompre tenure, ell or ant cd and iifiufdaMe S 25.00 ARlOSS i ARRL Operating Manual 4m Ed.) 1 normal i< *rt i in io make rhe be*i al vtjur Nation. jncltfdin interlacing heme computer* OSCAR, VIIMJHF SWM AR0194 Antenna Compendium Vo(. 1 Matefink ufl wniafr* qu tk. ioopK. vagi*. reduced iiueiina . ha tuns. Smith Charts, unlCft& i polari a* lion. I (Mill AFt2545 Antenna Compendium Vol. 2 Cavers...

Astron Power Supplies

HS-4A RS-7A RS-12A RS-20A RS-35A RS-50A RS-20M RS-35M RS-5 M VS-m VS-35W VS-5QM Sotei 12 ga So)fit 14 ga. & Slrantted 14 ga. Cul to your specs. Wa stock Amphenol Connectors Connectors Installed Jumpers & custom cable assemblies. Calf or wrile today We ship worldwide PriSM L J ttf la h LT5 will ki-.iI f> fc , Shpprg jA4iimgl(Kwpl H mi d. F ei Tis iL pd a2r .TP& lotlorig let Nviultfini o- lvL1-- raturr .,

Qyf

Eclipses of Sun by Moon 1993 4 - Summary Duration A-O-13 Provisional Mode Schedules 1993 A-Q-13 TRANSPONDER SCHEDULE 1993 Aug 09-0d 25 Mode-B MA OtoMA 60 Mode-BS MA 60 to MA 120 Mode-S MA 120 io MA 145 < - S Iransponden B trsp. is OFF Mode-S MA 10 MA 150 k* S beacon only Mode-BS MA 150 to MA 2101 Aion Alat 180 0 Mode-8 MA 210 to MA 256 J Omms MA 230 to MA 40 Move lo attilude 210A). Oct 25 AO 13 TRANSPONDER SCHEDULE 1993 Oct 25-N V 15 Mode-B MA OloMA 1301 Mode-BS MA 13010 MA 1801 Mode-S MA i...

Barry International

Monday-Friday 9 A M to B 00 P M Salurday 10 5pm Sunday 11- 2pm IRT LEX*'1 Sprlr> 9 St. Statton. Subways BMT-PrinceSt. StaliorT. INO-'T Train-Bwy Station Bus Broadway 06 to Spring St. Path-9th St. 6th Ave. Station, COMMERCIAL RADIOS STOCKED *COM. Moi w 1 . MAXON, Standard. Vaesu We serve munio paiities. businesses, C l Defence, etc Pwtables, mobiles, b sss. re-pesters _r

Bnb

FINALLY HEAR THOSE UNREADABLE SIGNALS buried in QRMP electrical noise, white noise, hetrodynes, ignition noise, etc, REVOLUTIONARY Digital Signal Processing by JPS Communications, NtR-10 SPECIAL 329.95 DELIVERED continental U.S. (elsewhere 350). Also, NF-60 DSP Notch Filter ELIMINATES MULTIPLE NOISE TONES, 139.50 delivered see 3 92 73 Mag. DON'T SETTLE FOR JPS CLONES Authorized Dealer DAVIS RF CO. POB 230-SR, Carlisle MA 01741. 24-HOUR ORDERS (300)434-4002, CODE 1356. FAX (506)369-1730. BNB254...

Books For Beginners

Q2D42 Digital Novice hv Jint Gntbb Geared to niyie yug a tmjib Lihju kd ihle pun km pant. S L D OTAd Shortwave Listener's Antenna Handbook Primer amenna beory. 113.95 05C25 Basic A.C. Circuits A jp- Prnth inf the beeinniiij -JmitnL SM,50 2QN0 B Technician Class Ucense Manual New No-Code n Gi m We rhn twtA va i> . fvcvytli i i > ih. need tn heeome Technician C arn, E er> fwVTioa ami aiivwer CM rhc ctamfnj-tian i loLnJ in iln> one hook. FCC Form Mu ap pik-jlitin 9.95 20N100 Electronics...

Boyd Electronics

1998 Soutligate Way Grants Pass, OR 97527 UAI-10 AND UAI-20 UNIVERSAL REPEATER LINK AUDIO INTERFACE Detailed application manual Low power operafion. 19rrsa f2v CrCSS decoder on the UAI-20 only Assembled, tested, one year warranty Link monitor-mix monitor mute control Adjustable repeater link DTMF audio outputs Selectable DTMF mute on repeater and link audio Repeater link, auifiliarv and control audio inputs Detailed application manual Low power operafion. 19rrsa f2v CrCSS decoder on the UAI-20...

C L

Only required for use on the 80 meter CW band, but there seems to be no reason why u should not be used on 40, 20 and 10 meters (using a 6* 1 2-foot-long counterpoise on 20 meters) as in the original W3EDP design. This could be done by tapping the coit L from the op, and moving the coaxial Icedline tap. A convenient method would he to make 3-pin plug-in coils, he smaller higher frequency coils could be made of 16- or 14-gauge seir-supporting tinned or silver-plated wire. Alternatively, the...

Call Or White For Special Quote

WE SELL-TRADE NEW & RECONDITIONED HAM EQUIPMENT 5AMERICA'S MOST RELIABLE AMATEUR RADIO DEALER' Serving Amateur Radio Operators Since 1937 182 North Maple * RO, Box 73 Watertownf SD 57201 i** to tt* h kL w woo Too busy to mosey on in Afait and telephone orders are welcome Welcome to the ol* Burghardt Amateur Center BAR NONE ranch of brand name HF equipment - - one ot the finest SPREADS of quality merchandise in the termor Get off your saddle & mossy around our corrai for a short spell and...

CALL

Mfrjr 11 hmui Pi a PenTij Litis Note ( ) * Industrial Bored Eimac Amperex Limited warranty 12 montti 13.DG Hours on Penta S Eimac transmitting tubes Price iS availability subject to c funge without HOlice * Quantity Pricing Available PREPAilD wit'i chutk ar money order. Personal checks rnust have reprlntoti address and are Jimileti lo S40.QQ Checks returned For Insufficient lunds will be su& iecl ta a I2Q.OO charge. Any ovBrgavrort wn1 Se re u roed. VlSAylMASTERGAfiO icc pten C 0.0, Add 4 50...

Call Us For Free Catalog

For your PC Compatible, Find Hams by Callsign or Name. Browse thru calls. Full export by QTH with custom output. All U.S. and Canada Calls. Ideal for mailing tisls, QSLs, etc. Uses 16 MB Hard Disk. High Density Floppy (1 44 or 1.2) required for install. Updates and options available, interlaces to LOGic, LogMaster, HyperLog and others Demo disk 3.00. County Cross Reference Option adds county to address info. Lookup or export all Hams in a county. Only 7.50,

Cbc International

BOX 31SOOX. PHOENIX, AZ B5046 Radio Fun is packed full of information to help you get more lun out of amateur radio. Basic how-to articles will get you up and running on packet. ATV. RTTY. DXing. and the dozens of other activities thai make amateur radio such a great hobby. Youll get equipment reviews geared toward the newcomer. We'll help you upgrade to a higher class license with monthiy columns designed to teach you what you need to know in a fun and exciting...

Center

FREQUENCY SCALE se eels an arr.phuoe 4 o.g t LCD d.sol y sen& tivity oJ erner lOdS.W , o 2 ctft'DiV TUNING adjusts the cunie' li qutincy 0' ttw ma yzer so tha signals 0 inif S appuar a lhrc cellar ol itie display a d (heir Fr& quency it read oul 00 ihe LCLj REFERE MCE LEVEL adjusts npL4 aie'varaf axJ JF gain Ca ib afars m jno a-e p'dvii Ppitatote aBfaclvc.y yie< ca if' sng ZERO SPAW fisiaray places analyze i& q span ns attvateft ajtsc POWERsv cr has 3 postf s 5a sri Operaon...

Chsa

Kt Antenna Gain & Wave UGMHz 3.0JB1 2 wave WVHz5.5dB5tf wavier Mai P& wer watts Length 3S 4J Weight gs Connector BKG Dual- and I46 446MHZ Gain Wave 46W+Z 3.0c Bi T wave 440MHz5.5dBi5r t v )f2 l SWftiSilortess Mai Power 12 W FW Length 3 L Connector HL25S or MO style Ltfl-eard il4(M46MH Garn & Wa e 145MHz 4.5dSi *ara) einher IO d VSWR 1 S i of less UaKftwrer 7WYFM Lengfli 4' 7' Connector PL-2S9 *

Ci Hcl E On Reader Service Card

73 Amateur Radio Today* September, 1993 79 Link Commun cation s RLC-H Repeater and Linking Controller (1) Full Featured Repeater port (4) Analog tines Programmable for (2) Linking Fut -Duplex ports Temperature and Voltage Readings - Unking ports capable of opera ling (4) Input Lines for Contact closure a s stand alone repeater ports Readings - Separate 10 Time*Out Timers, (8) Output Lines for control of external Hang timers, and Courtesy Beeps peripherals

Circle B On Header Service Card

OrJt-f h> I et. 2-t and gft a coupon for a SFf'OND CONTR( > 1 LM1 for rrmoU i t, onJv S4V p SW i NEW Vdour PC DATA LOGGER Oaly you can do something about the weather Over 20 Weather Functions including * mil speed jud Direi-tiou * femperaiurc -Chill factor-Alarms High lows times tick's - Metric English * (Sifek-MoUTU (no tools) rrjajsthead mounting Fasi, easy 'Toint & Plug directiortcalibraTion Optional sdf-empty ing rain gau e w ith litettme warranty * Scri.il outpui tor optional logger...

Circle G On Reader Service Card

73 Amateur Radio Today* September, 1993 61 C. L Houghton WB6IGP San Diego Microwave Group 6345 Badger Lake Ave. San Diego CA 92119 10 GHz Operations Wideband FM and SSB I have been asked numerous questions concerning 10 GHz operations, questions about everything from simple. easy to-build systems to the more complex methods The easiest to bund and least expensive are the wideband FM systems. The least expensive types of these often use converged burglar intrusion alarms. At the other extreme...

Circle On Beader Servece Card

13.5 feel of low loss coax Gttfl UHFfPL-ZS iSO-239) connect. 3D5M Standard Cable Assembty Same as 3D4M, t jl 17 lew of c. i 13 fee decide shieicted very low oss cosx. 4 i2RG-iAlaAw ooan GoU-pla sii UttF (PL Ep-239) ciahned Aflg*s easy entry t-om a lip-mc jn- w o causing coax or weit'ier stri damage CK-5M5 OeiuKe Cable Assembly Sane as CKoM. but '7 feel of 1.3'150MHz.(raB BOOwPEP 40C-540MHz. 0.2dB 50Dw FEF Isolation cittB CON SECTORS CMtfi& K CF-416 I CF-416DJ Output SQ-239 SO-239 Lowfcrt...

Circle On Peader Service Cabo

Reduce exposure to potentially harmful electromagnetic fields. AlphaLab's handheld TriField Meter measures AC electric fields, AC magnetic fields and radio microwave power density. Find ground faults, AC current wires or measure high-field generators with Ihe Magnetic setting (.2 - 100 milHgauss, 60 Hz) identify poorly grounded or shielded equipment, high VOT or fluorescent light fields, distinguish hot vs. ground wires with Electric setting (.5 - 100 kVJm, 60 Hz) measure antenna radiation...

Circle On Reader Service Card

16 73 Amateur Radio Today September, 1993 and meter portion of the circuit use a floating power supply the negative side of ihe supply must nor be grounded or you can ac-cidently ground one side of your joystick, with possible damage to Lht game curd. En Lhis application, you need to use a rotator potentiometer (Rl) of aboul 100k ohms since the game card ex pee s such a value in the normal joystick application. Also, pick a linear-taper potentiometer for RL again to emulate the joystick, I have...

Circle On Reader Servie Card

Musculi y removes all heterodynes caused by luners, carriers, CW, computer K I and other similar QRM i* fbltv dittcimiii k. Uli tu n n is nttt sary. lmmU iftsliilU he wttr iliu riy jehI jiii speaker ur headphones, inn iu- lent on alt the ti me while ope rutins SSK. Hhmv* lter upemllun whh it 2 etil or l-IJV idlim* +v< iu 1 o w( irk un > 4 SS K s n J und er II 2tl wer turrieiv requir I2 l> ( u mll> ivailublr frinn llu LCtsMM- jjih un vour rig WHY ARS THE PX ALL ON TH NATIONAL TUN -UP...

Code Tapes

h jn> This hc inmnr (ape. lakes you ibrough Ute letters. 1U numbed, and necessary punc-(Li.inon, complete with prautiee every step af the way. 73loa The Stickler S5.95 ft* wpm Thin is ihc prjetite lit ic for tha who sur-the 5 wpm VApc, jrhl i h jLmi the lupe for die Miivice nd Tedukiiut iiiensev. II is camprised of one m-IiJ hour af code. Characters ,ire ji Li wpm id fifcCd u 5 wpm, 73T13 Back Breaker S5.95 15+ Wptti C ixic fioups a ain. it a bt' i i3+ w ifTi you'll he rcnlly tn e+n-e When...

Cw

0 4i il i i i i , ifl S KJi ATV3 iJl liO -FO 1 1 Iii Kit ATVJ MJ- 2I g.AS-F T , i W.flJ, Kit L il i iiiiuaii i j .___. _ i___ - __. fi1.ft S IC Vi. AN F Si )04W IIW.Ffl AN F4 144W i.JS ANTJOt, W I J.70 Anttm jDW ift ARJI JOOW 1401 0 CBt04 U)0W 1441 15 AR30S 30QW 1313 bl POWFR SPUTTERS Hid COMBINERS l'IOMHi 600 Wall PIP -Pm( I 10 OS IflO Wat I PEP I- Ppft I ro WODWati nfp ( > 1 luvt Mod,I 00 Ht.l SiP> h(b 1 11.00 CHS -t C pp> r Spf Bd r 6x < l 4f 1 I DO CHfP CAPS- Kcrml ATC METAlCLAD...

D

Note D4 - D7 are not required, but can be added, along with driver transistors, etc. to control up to 4 rotators. Duplicate Driver Duplicate All Control Transistors For AND Box Circuitry For Note D4 - D7 are not required, but can be added, along with driver transistors, etc. to control up to 4 rotators. Duplicate Driver Duplicate All Control Transistors For AND Box Circuitry For TR1, TR2 - Small NPN (2N2222 Or Similar) T1, C1 - Transformer And Phasing Cap From Original Control Box DB-25 - Male...

D A

Typical sampling rate is at least two times the highest audio frequency tu be processed. The NYQUIST rate is normally used since at this sampling rate the processor speed can be minimized and the distortion is minimal. The NYQUIST rate of sampling for a 3 kHz maximum transmitted audio frequency turns out to be 6 kHa In addition to the hardware, software is required to define the modification to be performed on the audio sample. The software is in fact the most variable pan of the DSP system and...

Dd

500.000 HAMS plus l.MC idPu iKDomain euf Ridio Programs and Data how w> th inltmatiooc 500.000 HAMS plus l.MC idPu iKDomain euf Ridio Programs and Data how w> th inltmatiooc Publitftlnq Rout Bai 1& 3Q Mineral, VA Z3117 T03 BM-5777 . 00 * SKA Publitftlnq Rout Bai 1& 3Q Mineral, VA Z3117 T03 BM-5777 . 00 * SKA

Digital Voice Recorder

V UP TO Jlfl SECONDS RECORD IM J UP TO a MESSAGES v 4 SAMPLE RATES J SPEAKER OUTPUT LO LEVEL OUTPUT * MEG OF RAM J LO POWER - TX ENABLE -lOOma , BATTERV BACKUP NOT A KIT fi-iSv DC OPERATION SldQflf) 4 SMALL SIZE 2 5' X 2.5* PLUS H REPEATER CONTROLLER VOICE J> r KE2AM VER G SfE REvrrw Of w RSiON a JUNF 1291 tSSUL Of 73 *AG 4 DIGITAL VOICE ID j BATTERY BACKUP J TIME OUT TIMER , TX WANG TIMER v AUDIO MIXING j ID TIMER . TX ENABLE 400md t COR OR SQUELCH hEV 0 . a 1 5* DC OPERATION j SMALL SIZE...

Down East Microwave

RR 1k Box 310 Troyl ME 04907 721 USA Phone (207) 948-3741 Fax (207) 948-5157 Most Revolutionary High Frequency Amateur Radio Antennas in 20 years The FLYTECR AFT SFX Line of Mono band * 5 unique models for 40, 30,20. 15.10 meters. Each only 9 ft, tall (10 meter is lightly shorter.) * Precisian internal wound helix gives ful J-size, incredible performance - world-wide DX or domes lie. * Praise from everywhere j& hjlanh Your vertical sounds great p czbch, - I can't believe your antenna is only...

Drake

Hiere is a sneaky way to achieve computer control o rotators which eliminates the requirement tor building or buying an interface cardn and requires almost no external hardware, but it depends on your familiarity with BASIC programming and your willingness to do some experimenting First of all. you need a second line printer (parallel) port in your computer r should be set up as printer port TFT2> * If you don i already have one, you carr get an interface card lor about S20. The parailel...

Dsp

Test method. 32 73 Amateur Radio Today * September, 1993 Figure 4. Note Each equalizer is halft) the sieret> unit. Figure 4. Note Each equalizer is halft) the sieret> unit. Figure 3. Minimal analog implementation. unit- When compared with the bandpass mode, the NIR (noise interference reduction) mode provides some rather dramatic results on voice signals. Improvements of between 6 to 10 dB have resulted, depending on the particular voice characteristic being processed. In most...

E

CIRCLE 299 ON READER SERVICE CARD CIHCLE 234 ON H AOER SERVICE CARD Charles Byers K3IWK 5120 Harmony Grove Road, Dover, PA 17315 Phone 717-292-4901 Between 6PM and 9 30PM EST. Eves. ''Distributorship Available Tower Mounted Box Kits Dipole Hangers Other enclosures UHF & VHF Antenna Power Divider K)ts

Electron Processing

Hams needing a simple repeater interface that is easy to install and operate can now select a special ruggedized version from lectron Processing, Inc. This unit Is right for use where either the RF or mechanical environment demand more than a standard enclosure. The new BPE-2-AL8 is housed in a strong cast-aiu-minum box that is only 2.5 x 4.5 x 1 in size. This new model contains all the features of EP's BRI-2, including a super-sensitive VOX. and both hang and timeout timers. In addition, a...

Equipment In Stock

Long-rang Wireiess Telephone tor export in stock Mi RAGE RFC Amplifiers ASTRON POWER SUPPLIES Belden Wire & Cable, Int'l Wire OPTO KEYERS STOCKED Hy-Gam Towers will be shipped dined to you FREE ol shipping cost MAIL ALL ORDERS TO BARRY ELECTRONICS CORP., 512 BROADWAY, NEW YORK CITY. NY

Expandable Repeater System

> Standard and1 Computerized Auto Patches A NEW CONCEPT IN REPEATER DESIGN, THE Hi Pro E IS AN EXPANDABLE REPEATER WITH THE FOLLOWfNG FEATURES A BASIC REPEATER WHICH WOULD INCLUDE A COMPLETE RECEIVER, TRANSMITTER, COR, 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 MOUNTABLE CABINET, THIS SYSTEM CAN BE EXPANDED AT TIME OF PURCHASE OR CAN BE AN AFTER-PURCHASE ADD ON, THE ADD ONS ARE...

Experimenter S Delight Vhf To Uhf Block Converter

I Cfiannel Master 0746 This is or of rnos deals trial's too good to be True Brand rw in the box Channel Master D'OCfc oooverfe* . They used o be quf e popu ar back m ine early days of cable television. before mere were a lot of cat e reatfy TVs Somewhere n the *ond we Know tnere is still a demand lor ttiarrt- especially at ttvs price, Designed to Convert le'PViSJon VHF tfianrteis 2 through 13 ano A through Vtf to UHF channels 36 through 76 The bo* alone., is a great project box The 10 ft. AC...

F

70 Route 202N Peterborough NH 03458 phone 60 524-0053 70 Route 202N Peterborough NH 03458 phone 600274 7373 Circulation Offices 70 Route 202N Peterborough NH 03453 phone 603-924-0058 Manuscripts Contributions in tlie form of manuscripts wHh drawings and or pin olographs are welcome and win be considered im possible publication. We can assume no responsibility for loss or damage to any material. Piease enclose a siampe*i. seJf-add-essed errvelope with eacn submission Payment for the use oi ary...

Fantastic Transceivers

Rarnsey breaks the price oarrior on FM rigs The FX is ideal for shack, portable or rnobiJe. ihe wide freguency coverage and programmable repeater sp its makes the FX the perfect rig ior Amateiir, CAP or MARS applications- PackeLeers really appreciate the dedicated packet port, TRUE-FM ' signal and almos instant T R swilching. Htgh speed packet No problem. Twelve diode programmed channels bW flF outpul, sensitive dual conversion receiver and proven EASY assemhiy. Why pay more for a used foreign...

Fm Wireless

All units iransmrt stable signal in & G-109 MHz FMband Lipto 300'except tor hi power FM-4 llial goes up lo 1 2 mile. FM-1. basic unil . S5.95 FM- r as above but wilh added miKe preamp . S7.95 FM-4. long range, high power with very sensiUve audio secljon, picks upvoiceslO'away . .SH.95 MC -1, minialu re servil i ve mike ear-ttidgefaf FM-l.i.d SJ.95

For The Month Of September

Marc I Leaveyt M,D., WA3AJR 6 Jenny Lane Baltimore MD 21208 I thought I might take this nnonlh when the kids are going back to school to play professor, mysetf, arid answer some of your questions. We'll lead ol this month with an Email message lhal arrived via America Online. Matthew Mucker KB5FWG says that he has two very beginnerlevel questions for me. As a college student or a budget, he has never exercised the privileges ham radio otters, He's been monitoring 44-148 MHz in Houston, though,...

Free Catalog

This huge 100 page catalog covers everything for the shortwave, amateur and scanner enthusiasts. Request it today Tri-Ex is pleased to announce the reduction in price on the most popular models of quality Tri-Ex towers for the Amateur radio enthusiast. The overhefming acceptance of the listed models has made it possible for Tri-Ex to pass on substantiaf savings to our valued customers. WT-51 1,245 1,050 LM-354 1,865 1,300 Tne LM-354 is supplied vwlti a hand wurrch brane system The LM-470 fe...

From Dm Vm

Have Y0*1 Setn These Great NEW Products MH 200 - Lightweight folding personal sttrco- type stngk earpiccc hefldsd and flexible boom mic. Inline locking or momentary PT.T. switch. Models for Ken* wood, Icom, Yaesu and others. Compact, Full Duplex. GaAsFET Pre-amps LAilitl- Thcperfcd oompwiioo for tfumj b*ftd HT( while mobile 25+ W tick on dihi bmd wf 200mW (o 6W drive for lid repealer coverage, From panel output tncto-, switchahte, a .tnodt for CW S5B- DLA-fiOll - 50+W out op both 2 meter) &...

Ft

PetcJies telephone cails trom your radtf to phooe line. Great for making and receiving phone Calls where there are no phone lines Simple to use. Write or fax ior inquires. Simplex, semi-duplex, fulf duplex, CES & CSI Models stocked SDI-50. PPV. CS70D 8CIQ 900 etc. Our service Lab will wire in systems for you N requested. Save money on batteries Ask for Special Prices. Satellite telephone fn suitcase for worldwide use, WRITE.

Fth

RX 140-174 MHz TX 144-148 MHz FT-7400H RX TX 430-450 MHz Rugged Mil-Spec Design Advanced Track Tuning (ATT) 31 Memory Channels Wide Receiver Coverage 140-174 MHz Selectable Alpha-Numeric Display FTS-17A CTCSS Decode Unit FRG-6 DTMF Paging Unit SP-4 External Speaker FP-700 Power Supply

Funkit Line

(br I he novice as wsll as the sEaaoned V rnwtar The tKMrri sc-riQrnnooijafes a riet Nf phyiii ft catvQr Sy cti AM Dotflctof ORP Trai scerv& i V ur tJvWi rfaaiyi-g C iTW3 h board ertkKiirt and t nap t (NCC02AN 4 Et L t A A. ExpefimerterJs PCR om y E-nr lci Ljre (3nd harcK -ard) only CompJe p You c f ty need to trim to len ti and attach coaxial feed linel Takfti spate iiian an po M cipoie Needs noanl Idnar Max jgwit Is 3uu W rJcwnfnal ii Easl Hampstead. NH Q3S26 Phone (603) 329-699& Add...

G W Wolfe Communications

GE Exec, il J0W UHF Mob, 450-470, WIACC 5125 Mot Micro 45 W Mob drawers, 132-150 90 10-Mrtefc 45W. 132-150 Micor Basefflplrs. 132 150 Jammed Repeaters & Cell Sites New Technology (patented) converts any VHF or UHF FM receiver into a sensitive floppier shift radio direction finder SimpEy plug into receivers antenna and external speaker jacks Models available with computer interface, synthesized speech, fixed site or mobile - 50 MHz to 1 GHz. Call or write for details. CAREFREE, AZ 85377 FAX...

Get The Atv

Made in USA Value + Quality from over 25years Snow free line of sight DX is 90 miles - assuming 14dBd 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 youYe on the air - it's that easy TC70-10 has adjustable > 10 Watt p.e.p, with one xtal on 439.25, 434.0 or 426,25 MHz & property...

Greater Louisville

ARRL KENTUCKY STATE CONVENTION OCTOBER 2ND & 3RD COMMONWEALTH CONVENTION CENTER 221 FOURTH AVENUE LOUISVILLE, KENTUCKY 80,000 Sq. Ft, _AU. INDOORS - AIR CONDITIONED FOR TICKETS OR INFORMATION , SEND BUSINESS SIZE SASE TO GREATER LOUISVILLE HAMFEST P. O. BOX 34444-S LOUISVILLE, KY 40232-4444 PHONE (502) 551-4118 TALK-IN 146.28 88 < 32> KttoOHAL REPtATFR M4P GUIDES A whole new way lo enjoy our map cards The regtonci guide inciudes six kmtnated state cards, spiral bound for easy use. Very...

Ham Station

Fulton Avenue Evansville, IN 47719-0522 Store Hours MON-FRl 8AM - 5PM SAT 9AM - 3PM CENTRAL TIME SEND A SELF ADDRESSED STAMPED (2 STAMPS) ENVELOPE (SASE) FOR NEW AND USED EQUIPMENT SHEETS. WARRANTY SERVICE CENTER FOR ICOM. KENWOOD. YAESU FOR SEV1CE INFORMATION CALL (B12) 422-0252 MONDAY - FRIDAY TERMS Prices Od No I Include Shipping Price and Availably Subject Id Change Wilhnu Notice Mast Order* Shipped Tlie Same Day COD's UUelcumc

Hr

USA AND CAMADA ORDERS (BOO) 434-3437 V V WO MC iT-iCtfiS flIWtB AT Andy MacAltister WA5ZIB 14714 Knights Way Drive Houston TX 77083 At ttiis lime lasl year, AMSAT-OSCAR-13 was in perfect operating condition The satei'ite was more than four years old and performing lawlessly, In recent months though, the situation has changed. rn Mayh the transmitter section of Lhe JL* mode transponder (23 cm or 2 meters up with 70 cm < lown) stopped wording. All attempts to bring the 70 cm transmitter back on...

Hw

Send your check or money order along with (Printed or Typed) Name, Address, (including County). Call Letters and Color of Stock fQ, BBAW Printing 803 N. Front Street McHenry. IL 60050 Custom jot) oc Different Stock. No Problem, Call (815) 385-6005 Solid Copper Buss Stainless Steel Hardware Grounding Stud Every 6 Inches Top or Back Installation Ground all of your equipment chassis' to a single earth ground in one easy installation Money back guarantee, if not satisfied Add 3.00 S H Mail check...

Cvv

SG-95 0 w Digital C piuy i, 150MHz hu jr counter 4 compla t injiiMat lor building, lasting, protoiypm analog and digital circuits silo's Cpgilil'Anjiog rnififr1 1 iJ-gn l w ii hi -1 in powiii sgp injs ffidiidis'i-i hiMBqn irnfalBr ctSlnnoLtsJy mj tis. tnariflijiar.'Muaiifl ttava terns All uud bs dm nd pruleSUd againsi jnorS- * a K> lovoc AI - I K 10 I SVt> C 1 -mo, -I s TO i l fc& Blf& VDCfl Airoi -1 i'-'CC a ifycv. ip i A' a jgVAt Cflm r rji avAt r. *n- h'jncr-or irrcaiDr Tnj.n L ji...

Cwe

Di si o ne ni easu ren i t i ts. hack and soldered ihe shield to the top of ilic can. This is when should have soldered the radials on to the can, but no, 1 did it the hard way. I slipped the center conductor through the center hole and. using more hot glue, pressed the can into place, 1 drilled a coax hole in the center of the 5 plywood circle and a mast hole in the 2x4 before gluing them together (see Figure 3), The plywood fit snuggly into the can. And the mast, with the am slipped...

Pik

Figure Winding for the IrifHar balun The sot id line represents the three mres twisted together. Use an ohmmeter or continuity tester to be sure you ha p re the right end of each winding when you solder it into the circuit. eni gauge Also included is the variable capacitor (always a hard-to-get pari), and ihe Two-hole baiun cores, also hard* to-find. Even SO-239 antenna connectors come with the kit surprise ). The Kanga Super Tee antenna tuner is 20 plus S3.50 shipping from Kanga US, Bill...

Icom

Now. for the first time, available on inexpensive, portable counters with our new ATH Senes. This feature is the most significant improvement ever made to the pocket sized counters It allows Hands Free operation to automatically read & hold a signal as quick as 80 ms or 8 of a second. Our ATH circuitry is super fast because it does not require the time for multiple readings, like digitaJ filtering techniques. The ONE-SHOT ATH feature is standard on the ATH-30 Using controls and indicators on...

Im

Qpcodgs nil IB loiichtones, Wprhs w hlerrni af mi l - i--l Inc. 9 pin L'O connwaor. tTL or nsaaa buMnrd wduib 8CTVDC. fcfc Re Program50 000Codes Worn ljnciang Ire DFDTRatqr, l_ D < *grtva da Weft. 2* Pincormedor QUAD option JdS J Jt' 2 Arm rt t . jtn 0r i < C eSCh 31 A Diga Decoderj TSOQ.S 89.95, Exp nd QUAD 'S B9JB5 I SC r- 1 5 CU ' TH li ciperate i L p 'bs me te bese R jvI witfi oafch l CSG4S MN.S2S.00 I SC r- 1 5 CU ' TH li ciperate i L p 'bs me te bese R jvI witfi oafch l CSG4S...

In

Alt ar-nptrHers (norvrpto are linear, aihmode with fuUy automatic T7R swiictonQ and PTT capability. The 'acave preamps use GaAs FEt devices at 5 dB NF with + 16 dBm 3rd onfer IP LPA Standard and HPA amps are imemitteiTt duty JeSfgi sutaWe ftr ttase and motile operatm Repeater amps are coobnugus cuty. class C Amplifier cipabilltta High-power nanow or ttifleoand, 100-200 MHz, 225-400 MHz. 1-2 GHz, Military (38V), Commercial etc - consult factory. A complete line of Rx preamps also available.

Info

PC GOES WEFAX 3.0 is a professional fax reception system far the IBM PC. It includes an AM FM demodulator software, cassette tutorial and 325 page manaul. Check this port Nil Nsl of our advanced features PC GOES WEFAX 3.0 is a professional fax reception system far the IBM PC. It includes an AM FM demodulator software, cassette tutorial and 325 page manaul. Check this port Nil Nsl of our advanced features Res up lo 1200x300x266 Unattended Operation Coloniatran Zoom Pan Roiatron Contrast Control...

Introducing The Universal M

A totally new concept in code tone readers A RTTY-reader and tone-decoder In one DTMF Easy to read two-line 40 character LCD, CTCSS (PL) No computer or monitor required. W DCS (DPL) Forget the limitations you have come lo expect from most readers'. The self-containod Universal M-400 is a sophisticated decoder and tone readerofferingan exceptional range of capabilities. The SWL will be able to decode Baudot, SITOR A & B, FEC-A, ASCII and SWED-ARQ, Weather FAX can also be decoded to the...

Irq

The IBM-PC uses an interrupt driven architecture. What does that mean It means that the designers of the PC decided to Implement a system of hardware services thai relies upon a request irom the hardware device. How you service your hardware's needs is a basic problem of computer design. To make this a little clearer, let's take a look at a familiar example the com port. chronous device that is, Ihe data can appear at any time. Its flip side is the synchronous communications port, which is...

It

1 4 wave 446*IHz2,i5cS VSYVR Less Shan 1.5.1 144-14& UHz, 440-45GMHZ Max Power 60 waits Length Connector L- 59 or NMO style Construction Black. Uuiar toot-a-Rke wfaltKto& f iri-Band 146 2D '44fiMHz Gain Wave ' 6MHz 2 ' 5dB wave 220MHz 3 Sr R 5-8 mw 448MI Izq.OcB 5-S hvave x 2 VSWR 1 5 ' r less Max Power 10 waits Length 3' Connector CX-22* PL-25S G -2MNMO NMO Style

Itc

295 39 55 hJ aOO'f i l n H i 4- + S.4 a 41 g s 4 a a a g g g a a p m bx ' JiMi3 il a a a a a a aria S 159 Japan Radio 285JPS riiii ii B in - - r - ---- ----r rr-fer-r + ,50 2 Kawa 151KDC Sound Kenwood USA Corporate CV4 234 Leniini 47 243 Luke 230Maggiore Electronics Lab 19 233Mainaaie B6 MFJ 160 Micro Computer Concepts 56 144 Micro Control Specialities 49 30 Micro Video Products 49 24 Midwest Wood Products 50 ft jTa NlCad a a B--1 -i a a B 4 B i a P - - - - - - - - - - ----A - Motorola a < h...

Itc Instruments Corp

9222 Chesapeake DR, Suite A San Diego Ca. 92123 619-277-4619 Fax 619-277-6736 Analyzers for less- Let's look at the features ITC Spectrum Analyzers provide. Log Amp. ( pat pending) Other tow priced units only have 60 dB or 70 dB on screen. -110 dBm 7 uv. sensitivity at wide & narrow span widths. Other low cost units provide 80 - 95 dB only at narrow Spans. provide high stability and low drift at any span. (I < then 1kHz per Hr after warm-up The SA Series controls are simple to understand...

Hla

Add this FM modulator circuit to the tiny CW transmitter featured in the Homing In column for May 1993 lo adapt it to your favorite foxtiox. You would expect that such a heroine would appeal primarily to girls Kim s age and younger Indeed, that was Cindy's intended audience, but her stories have much wider appeal Several adult male hams have told me that once started, ihey had to stay up into the wee hours to linish reading Wall's books. With careful research and attention to details....

Kenwood Yaesu Icom

Call Us For Great Prices & Great Service STXMofrjC SamATflO te T> , 30 5l2 fcdMn STXMofrjC SamATflO te T> , 30 5l2 fcdMn UnobiTuifv t DX Gta Aor< ofl*> Cor SO ihr- 10 * Ej j1> tiiddfc - install F i * F ved. r P r Ki - 2Q cetcr iJiicai vu .CSI r J DX Pua-rt V tln'l it. iiti T-w e hfr. Bitr ir Wflli DX blh K Ko* abj-ui t icirt pronif S0 4 30 m Or 4 2 clcmint pMio itiJrr ( > r ih mk ii- ily fit h. jHvk- l '-'- rfK J Work DX tvbhmil iflI Jij iht ntfiphhoT inL s,k i Antcntt isWest L-T...

Knd

18 The W2EKY 'taky-Stick Antenna Hit the roof with an improved ground-plane vertical. Build this unique muitiband restricted space 26 Distributed Capacity Twisted Loop An indoor 40 meter antenna for five b licks U Build a new version of the classic 1_azy H 30 Add Remote-Base Capability to ANY Repeater Bargain beils n whisttes WB9YBM Everything you ever wanted to know about digital signal processing

Log Program

COS CO WW WPX SSB & CW tff u eortftcrt. country capetaJ prefa, DX-zcne. fTU- 2. CAL CALCULATE _ s 17+95 Ove-3S3 i*rmj(j .i-'ttirus SWrl metre. horsepower capacdra etc 3. PAL HAW PHONE AODR LIST 11,95 4.PROGB1 THRU PC XMAS 1. CLASS 1, COUNTRY l. BLUES t. etc Vie alternative to the present HAM software market XT, PC, AT COMPATIBLE 5.25 OR 3.5 DISKETTES Ohio ret (tails add sales lax 1120 MEADOWVIEW ROAD WILLARD, OHIO 44090

M Cw Transmitters

Join the fun on QRPl Thousands of these mini-rigs have been sold and ions ol DX conlacts have been made Imagine working Eastern Europe with a 30 transmil-taf ihai'a ham radio al iis best Thesa CW rigs are ideal mates to Ihe receivers al r.ght. They have lwo-posiiion vanaoie crystal control (one popular QRP XTAL mclud ed), one wattouipul and built-in antenna switch. Fluns on 1 V DC. Add ou r m atchi ng case a n d k r> ob Se1 lor a handsome finished look. (Specify band QRP-20. 30, 40or BOj...

M

3 Vdd (12-14 V0C) 1 fif out (ec ahm ) 3 Vdd (12-14 V0C) 1 fif out (ec ahm ) Figure The output power of the Rabbit transmiiter can be increased to over 5 shafts through the addition of this Hitachi PF0011 hnear hybri MOSFET amplifier module. (Drawing courtesy of Bill Olson W3HQT of Down East Microwave.) move the metal cover directly over Ihe area where the whip antenna is located see Photo 8 Youll need a targe soldering iron (100 watts or more) to remove this cover. You can also use a small...

Make Vouh Repeater More Useful Gjvk Jt A Unique Personality

* Record all prompts and messages in any voice, accent language * Use voice m a i m en us for c tub bu Ueti ns and operating instructions * J > eEec t Em e rge ncy Loi i Ton e Zero * Leave messages i n individual vuice main Call to U- free for in formation package 1-800-563-5H51 or direct X-604-820-1162 - one month unconditional warranty -one year, parts and al> our - Computer Hoard and Software - S2Ji9 0945 Shook Road. R.R. 4, Mission, B.C., V2V 5M2

Mcom

Turn your old ham and computer gear into cash now. Sure, you can wait ur a hamfesl to try and dump itr but you know you'll get a tar more realistic price if you have it out where 100,000 active ham potential buyore can see H I han the few hundred local hams who come by a flea market table. Check your attic, garage, cetlar and closet shelves and gel cash for your ham and computer gear belore ii's Loo dd to sell. Vo know you're not going to use it again, so why leave if lor your widow to throw...

Mf

F-4 Pompeo Beach FL 33073 NO FLORIDA SALlfcSI nents. Put figure they cost around 100. using a good junk box to hold cost down. That js competitive with the brtck systerrs which cost 50 each and require thai an additional S2D oven-controlled crystal be ordered from International Crystal for phaselock operation. Again, this is just a price companion of different systems. The cost breakdown on the receive low noise preamp is as follows for a two stage GaAsFET...

Mfji

Funes coax, balanced lines, random wire 1.8-30 MHz. Cross-Needle SWR Wattmetci has two swifehable ranges 30, 300 or user selectable 6 watt ranges. Tm> 6x6k x2xh inches matehes MFJ CW Transceivers, Fastens to MFJ CW Transceivers and or Mh'J-II 14 Power Pack to form single unit. Prices flJX SP THS Subject to einige -, im MFJ Eiuefpti JriL. MFJ-4114 viaicDing portable Bauery AC Power Pack for MFJ CW Transceivers or other low power rig. Provides power from Ni-ead D cells, regular or alkaline D...

Mhz

New ATH Series ATH-15 1-1500 MHZ, ATH ATH-30 1-2800 MHZ, ATH ONE-SHOT 259 HST15 HIGH STAB TGXO fact. rat. option. The CS-800 wilt operate Full or Semi duplex and also has a built-in Repealer Maker. The only required connections are to the Mic and Speaker jacks of your duat band transceiver, A 9 memory Speed-dialer is standard. Fully FCC and DOC approved. This is your best choice in a Full Duplex Interconnect with built-in Repeater Controller The CS-700 is for simplex operation and offers...

Midwest Wood Products

Display your license and callsign on a 12 or 24 hour solid oak clock. Letters can be changed. Both size licenses accepted. A great gift for that special ham, or for yourself Midwest Wood Products 16141 24th Ave Coopersville Ml 49404 Factory Authorized Dealer & Service For

Mo

Monaco hams quite often get asked the same questions from many U.S. hams. Here are some of the questions and how we'd respond. 1, Are there many active hams in Monaco7 There are about 50 licensed hams with about 12 of them being fajrly act e on an international scale 2. IS anyone active on CW. RTTY. AMTOR. packet. SSTV, etc. One Monaco ham, by himself, does about 1,500 QSQs a year, mostly on CW, and most others do at least some. There are three or four equipped for RTTY but only one active...

Model

ICS Intermittent Communication Servi (50 Duty Cycle 5min. on 5 min. oft) 50 pF variable capacitor (see text) B & W Minidutlor type 3047 PVC stranded hook-up wire (Radio Shac* 273-1218 or simflaO RG 58 (16 feel used on prototype) 12-way 2 amp polylhene terminal blocks Wood base 12* xfl x 1 2' Vertical wood support 23u x 0,8 x Q.6H Wood spiral supports 30* x 5 8' x V4 4 x 4 x 3 16. 3 diameler inslrument knob plus 1 4* shaft coupler i> us 1 4' insulated hail (and slow motion drive, if...

N

310 GaifioW St., Suite- 4 Eugene OR 97402 Info (503)687-2118 Orcefs (800) 33 9058 - Fa* 503) 687 2492 Decode artd Aspiay Touch Tones from t telephone, tape recorder, scanner, or nearly any aud.o Our J 16 (fcpl LCD disp a> SO 0 git scroiJa le huiifcr Higii spee-3 up So 25 (fc is pei second Buili rn speaker 9V battery or eternal power Metal case TM 16 PLUS includes FIS 23 Output and Software for optional automatic daie time number logging usmg youf IBM Compaiitile compear Battery and audio...

Nara

Box 598, Remond, WA 98073 Orders Only 1-800-GOT-2-HAM Inquiries (206) 869-8052 AND ALL OTHER REPEATER COiNTROLLER OW NERS * 1024 user voice mail system, works like voice BBS * All features prompted by a pleasant female voicel * Storage limited only by available hard disk space * Communicates with RC-S5WB50 using busy data lines * 100 event advanced scheduler with real voice clock calendar * Background upload download of all files via optional modem * Many other features, too many to list...

New

The CS-900 is VOX activated and can be used simplex or through any remoteiy located repeater. The standard 1 2 Second Electronic Voice Delay totally eliminates syllable or word clipping and results in unsurpassed simplex performance. A 90 memory speed-dialer and Remote base mode are also included. The only required connections are to the Mic and Speaker jacks of your simpfex transceiver, Fully FCC and DOC approved. This is the best deal going in a simplex patch

New Dsp Audio Processor

The new NRF-7 is a medium priced DSP product which provides great flexibility in audio processing. Modes available include atmospheric (white) noise reduction through adaptive peaking spectral multi-tone notch filtering notch & peak combined wide (2100 Hz) and narrow (1500 Hz) SSB filters, with and without spectral notch wide (500 Hz) and narrow (200 Hz) CW fillers with selectable center frequency and a 500 rlz wide

New Online Call Directory

Our new HAMCALL service gives you 494h114+Hams, via your computer S29 95 per year unlimited use1 B CKMASTER PUBLISHING Route 4, Box 1630 Mineral, VA 23117 703 894-5777 800 2B2-5628 jc Like T Pocket Chock full of Features and Tips' SuhSn-TiDfli s *rr*k> Wi )t o sh-w-jHy written 3 borv,a jH' S fnp i 7r* 51 Send he or money ord* lUShmdS kxkjf o SuhSn-TiDfli s *rr*k> Wi )t o sh-w-jHy written 3 borv,a jH' S fnp i 7r* 51 Send he or money ord* lUShmdS kxkjf o PtMt Power * PQ Bo* ns * Burleson. TX...

No

Vos ., the answer Is GAP'S revolutionary technology. I i yOLi'rs looking for an antenna that can ul EieriDrm tti-e others and give you the edge yrju re looking lor a GAP. The Challenger DX-Vlll is the revolutionary desiga that arews your demands for miilti-band operallon and ungual j ef icieficy wit i low roise, This is the tethnolagy that elim nales EarttY Lo& s. GAP delivers from an eievateo feed your powtt doesn't disappear into the ground. Put it up. Turn ion. No Ion i rig. No...

Oct

HUNTINGTON IN The Huntington County ARS will sponsor its 5lh annual Ham-fesl from 6 AM-2 PM at Ihe PAL (Police Athletic League) Club in Huntington VE Exams. Talk-in on 146.005 665 and 448.975 443.975. Contact Ray Tackett KC9DZ+ 420 Market St Andrews IN 46702. MANSRELD, OH The AAARC will host Ihe North Central Ohio Hamfest from 8 AM 3 PM, at ihe Ashland County Fairgrounds. Talk-in on U7 105+. Contact Watty Green W3YXS, (419) 2813903 QUEENS, NY The Hall ot Science ARC Hamfest will he held at Ihe...

Onv

Carole Perry WB2MGP Media Mentors Inc. RO, Box 131646 Staten Island NY W313-0006 This column deals with one of the best ioliow-up activilies we've ever had in our ham radio class. When my 7th. and 6th grade ham radio stu-denls were selected lo get involved with the Ocean Challenge project (Hams With Class June 1993) we had no idea what a fantastic fun learning experience it was going to be. Bill Biewenga and Rich Wilson WA1BZE set a new sailing record on April 7, 1993. from San Francisco to...

Optional Lcd Meter

4 4 44 I- h F H I 4 4 4- B i 'Vf il Electronic Regulated Fold Back Current Limit Dual Drawbar Auto Reset -1 Pico Second Latch -1 u Second Input Surge Proiection Digital LCD Volt Amp Meter w display hold (optional) Modular Capacitor Array Soft start on most modeis * Continuous duty with optional fan cooling (not required S4D SS5) * Hbe fi duty transformer manufacture* in U.S.A

Pc Electronics

Model BP-1 Packet Modem Made in IKS A, * Perfect Vor Portable + Assembled & Tested *VHF, UHF, HF M) Whether you're an experienced packeteer or a newcomer wauling to explore packet for ihe First time, IJils is what you've been waiting for Thanks to 1 breakllirough in digital signal processing, we have developed a tiny, fuli-featured, packel modem at an unprecedented low price. The BayPac Mode BP-1 transforms yotir PC-compatible computer into a powerful Packet TNC capable of supporting...

Pc Power Fob Your Shack

Rt tm q The ultimate In amateur a* LvWlC tffo managemenf software Complete loggirg-HF, VHF, satellite online tracking for any award, QSL management QSL route facility, radio interfacing controls rig arvd logs VFQ daia, antenna rotor control, daia terminal for all digital modes, unequaled packet spotting lor DXCC plus zones. prefixes, and more, contesting with user-specified contesl rules, full mouse support, windowed interlace (Windows not required), customizable screens and reports, superb...

Propagation

JtmCmy WIXU 2W Eas Chateau Circle Psysatt AZ 85541 September should be the first reaJly GOOD month tor propagation in several monihs. You may expect to find more Goad (G days Ihis month than usual, One reason, ot course, is the aulumnal equinox, which brings equal length days and nights and usually 'Fair* (F) and Fair-Good (F-Oj conditions for many days during ihe month. 0-layer absorption is down, meaning that you can find decent daytime conditions on 30 and 40 meters, and the slorm sysiems...

Public Safety Announcement

Tampering with Motorola's Communication Technology is Nothing Short of a Crime. not only damages the reputation of Motorola, Inc. and the communications industry, but undermines the very integrity of America's public and private communications services. Motorola has been at the forefront of communications technology for more than AO years. Today, we offer a greater array of communications products than ever before. We are proud of our products and the vital services they bring to our customers...

Quad

TSOO 4 DIG T Te chton* Decoder Quad Relay r i -io ftdil 7 ypjee Mrii-T + 2 Alarm Inout PK1 adds Conlfol uf Ultrii via Peckot * or Til. modem and provides a Packet 10 V'oicii E3S. Rpq Tnrl -.-i 1 FKfc nc 4 dwacaiiteto P a PK1 S99.9S 8CTVDC. fcfc Re Program50 000Codes Worn ljnciang Ire DFDTRatqr, l_ D < *grtva da Weft. 2* Pincormedor QUAD option JdS J Jt' 2 Arm rt t . jtn 0r i < C eSCh 31 A Diga Decoderj TSOQ.S 89.95, Exp nd QUAD 'S B9JB5 Touehtone Lo RS232 300 Baud Interface ''Decode-A-P hT