Info

Noise bridge measurements confirmed this resonant frequency and indicated an input of 52 ohms. The measured bandwidth of the system was 170 Ulz between the 'SWR L2 points, which is very acceptable. The common mode shield current was appreciably less than for a standard well-balanced center-fed dipole. Stations worked reported no difference in signal strengths between these dipole antennas. The Improved RKD Antenna is an end-fed dipole using coaxial cable without a tuner....

BNB

WANTED Western Electric tubes and other tube audio equipment. (800)251-5454 , BNB615 DUPLEXER TUNING GUIDE A complete booklet showing step-by-step instructions on tuning all types of duplexes Included is theory of operation, detailed diagrams and much more. Send 9.95 plus 32.50 S& h to RGM PUBLICATIONS, 533 Main Street, HHfSboro NM 38042, For faster service using a major credil card call t505)895-5333 and order today 30 day money back guarantee. BNB635 SATELLITE EQUIPMENT Besi USA,...

Circle On Header Service Carp

62 73 Amateur Radio Today * July, 1994 Photo S, The component p rts of the W4HTB repeater are assembled m Hank's final test facility. Photo S, The component p rts of the W4HTB repeater are assembled m Hank's final test facility. er and the transmitter using a TX-RX 26-66-01A dupiexer. The receive system consists of a PC. Electronics ATVR-4 receiver that delivers video to ihe video sw tch and sync detector circuit. The video ID and alternate video sources can be routed through the video switch...

The LDG Electronics FC

A small, flexible fox controller and CW IDer. LDG Electronics 1445 Parran Road St. Leonard MD 20685 Telephone (410) 586-2177 Price Class S69.95 plus S& H f you are a sertous foxhunter, you have probably tried putting together your own loxbox with timers, identifiers, etc. You have tried the different circuits using timing capacitor networks and different chips, and you have probably soldered in those countless diodes in that matrix for the IDer. Recently I tested the LDG Electronics...

Qmm

A NO-RADIAL VERTICAL THAT COVERS 80 OR 75 METERS No, we won't insult your intelligence by telling you that it's a ,Jhalfwave or that ANY vertical will operate more efficiently without a good radial system than with one it certainly won't) if you want expensive fairy tales talk to our competitors It, however, you've no room for even the smallest radial system just install the most efficient multiband vertical in the business, the HF9V-X, over our counterpoise kit. You'll not only save a tidy sum...

Hiyss

Gicba1 positioning system iGPSi receivers display latitude and longitude on their LCD or CRT screens. They also show SOG speed over ground , COG course over ground , speed, and distance o pre memorized evert or way point markers. The latitude and longitude numbers would lead to pos non accuracies of approximately 10 feet, bul the last significant number regu larly charges. Why the change This is because your position is purposely being diluted by the Department ot Defense GPS satellite system...

Ncg Companies

1275 North Brave Street Anaheim CA 92806 714 630-4541 FAX 714 630-7024 Mini spkr mic featuring full TX quality' Lighr wieigfrt. xtr amp mely email 1' T wilt collar poete dip m m Kenwootl VBTSion rt P2F icflmTaesiJ Mini spkr mic featuring full TX quality' Lighr wieigfrt. xtr amp mely email 1' T wilt collar poete dip m m Kenwootl VBTSion rt P2F icflmTaesiJ SH-55 Super Flexible l46.'446MHz HT Antenna Gain amp Wave Max Power Length i4GMH i.5dBi14 wave 10 watts 15.51 446MHz 3id i to wave 2 Gain it...

Custom Madehand Tooled

Feather products with your initials, name, call letters. Photos amp estimates available. Key rings, wallets, belts, purses, hanging signs, specialty items. GREAT GIFT. LEATHER amp WEST, 67 Causeway Rd West Swanzey NH 03469. 603 352-6256. 9-4 pm. M-F ET. BNB215 SELL NOG 15m QRP transceiver, used ittie, A1 condition, 200.00. S.v, Couch, 2029 JoAnn, Newton KS 67114. BNB220 OSL SAMPLES- 50 certs, SAM-CARDS, 48 Monte Carlo Dr., Pittsburgh PA 15239. BNB275 ATTENTJON HAMS Subscribe to 50 Worldwide for...

Awv

B 10 B 10NMO Dual-Band 146 446MHz, Cellular Look-3-like Gain amp Wave VSWR Max Power Length Connector 146MHz0dBi wave 1.5 1 or tess SOW FM 12' PL-259 or 446MHz 2 15dBi xh wave NMO styte B20 B-2ONMO Dui-Band 146 446MHz Cellular Appearance No Ground Plane Required Gain Wave VSWR Max Power Length 14Gtf Hz 2 i5dB 1i wave 1 5 1 or less 50 watts 30 446MHz SOdBi wave x2 -25 SB-25NMQ Mono-Band 146MHz w Fold-Over No Ground Plane Required Gain amp Wave VSWR Mai Power Length Connector 146MHz 4.1dBh wave...

Sopgoo

Make and receive phone calls from your mobile rig or handie-talkie with your own personal auto patch. Connection is easy just hook-up to the mike and speaker jacks on your base station rig and plug into the phone line Complete control is assured through touch-tone access codes that you set and change at wiit. Long distance toll access is controlled by speriat cotie that you set preventing fraudulent usage. All programmable codes and set-ups are stored in special non-volatile memory immune to...

Second Generation

Nexi genera Li on VOX controller with adj vox. sensitivilv. timers and CWiD Operate VOX with no internal connections lo your radios or COR for more demanding systems BC-21 w CWID amp enclosure 89,95 Add DTMF rml control, patch and outputs lo control other equipment lo Hie IiC-21. BC-2R adds nm cirl and patch. 79.95 DTMF decoder Boards for every netitl BTD-8C has 8 latched, rml loll-restriction, UTZ, IC sockets amp more 99.95 BTD-RM jix ninLary output . . 79.95 BTI3-8A 69 95 Qrig BC-1 . . 34.95...

ATV Transmitter

Build one on a PCB using only a few componentsI by Angel Vilaseca HB9SLV and Jean-Pierre Morel HB9RKR The availability of cheap surplus GaA -FETs lateh has made a lot of microwave experimenting possible for amateurs. This article describes a new kind of amateur 10 GHz low-power transmitter usins a surplus GaAsFET, mounted on a tiny piece of Teflon glass PCB. Wideband FM modulation is possible for ATV operation. As micro wave-oriented am incurs, we the authors began experimenting back in the...

Frequency Counter

Now you can count frequencies 'til your heart's content When S amp S Engineering sent me this fre-_ _ quency counter kit for review, gosh, did it bring back memories. My first home-brew frequency counter came to fife In the mid-708. Oh, those were the days Johnny Carson was king of fate-night TVt the Bay City Rollers were rocking Top 40 radio, and the USSR and the USA were sneering at each other. AEI you needed for a frequency counter back then was a VW bus full of TTL logic chips, 15 pounds of...

Cor Repeater Controller

Cor Repeater Two

Features adjustable tail and time-out timers, soJ id-state re taw, courtesy beep, and local speaker amplifier kit 49 CW D Diode programmable any time in the field, adjustable tone, speed, and timer 69 COR-4. Complete COR and CW1D all on one board CMOS logic for tow pcwer consumption EPROM programmed specify call k 599w amp tS159 on one board. Diktat ic records up to 20 seconds of your vdce Can record multiple id messages Tail and time-OLii Rimers courtesy beep, so d-state reiay to key...

Monaco

Daniel Plett 3A2LZ B P. 349 MC 98007 Greetings to all from Monaco, This lias been a rather quiet spring here in the Principality not too much unusual going on. The Association des Radio-Amateurs de Monaco had its annual meeting. The first order of business was the election of the council for this year Most oi the council members remained the same. The onfy change was ai Ihe position of General Secretary. Claude Passet 3A2LF. who has worked hard a M hat position for a number of years, fs taking...

Orner

Carr K4IPV P.O Box 1099 Fails Church, VA 22041 The AM broadcast band AM BCB runs from 540 kHz to 1700 kHz. You read right The FCC raised the upper limit from 1600 to 1700 kHz not long ago. Most stations are local, and relatively low-power. A few stations are large region a Is or clear-channel 50,000 watt blowtorches. Because AM BCB stations are largely focal there are lots of them, so it's a pretty safe bet that many, perhaps most, ham operators are close to at least one station. When...

Mini Kits

TERMS Sntistacrion guaranteed Examine for 10 If not plans return in original farm lor refund Add 4.95 f M shipping, handling and insuran F ot id reign orders add MS for aurrjca mat COD U S Onfy ncW S 00 Qrefere unfitt S20 add S3 00 HY reOctants add mI.-s tax. 40-day pans warranty on lot pans 1 year pails amp labor warranty on a red units RAMSEY ELECTRONICS, INC 793 CANNING PARKWAY VICTOR NY 14564 ihe 20 Wan amplifiers Needs only 1 2-2 waits of drive for full output, linear for S5B AM or CW...

Sinclair Radio Labs

Sinclair Radio Labs has introduced an intelligent site monitor tor remote RF transmitters and associated antenna equipment. The AMV-6A measures RF power from 1 to 990 watts in both the forward and reflected mode simultaneously, allowing for easy VSWR calculations. Near Intuitive setup and programming make this power monitor simple to use, and no computer or other ancillary equipment is required for installation. The unit allows system power and VSWR tests without disconnecting coax Eines. For...

Pfy

ICxIcti tc our 25th lt 1 11 ivtE ary wit h iptr ml uvicg amp on l fie uurnm and 1 ntbrd EcliDJ found in thti Jul. Tliii coupnttnuK be jm-lLMlcd Jlh you I I prepaid order. Ondil L-Jirdi ami t ti Lnijiy d counts are excluded ft um h Pvls offii. OiTcr Vfll id dftly tin nrtlcn limited directly U Commu nidations I lirclroiiics Inc., P.O. 1 amp 45 - l qit 7306M. Arm Arhor, Micjiigan 148106-1045 U S A, Coupon expir Au t 31J 994. Limi t one cou por I per item. Coupor niiy net be ikoJ in coojunclkm wilh...

Gro ve

Why pay over 400 for these separate accessories Adjustable Filter Recorder Activator Audio Amplifier Audio Activated Squelch Noise Limiter When you can have it all in the new Grove The Grove engineering team has created the most revolutionary audio accessory on the communication market the 5P20G Sound Enhancer Housed In a stylish, solid oak cabinet hand crafted in the mountains of North Carolina, the SP200 is sure to enhance any room and radio receiver The control panel, constructed of sturdy,...