rf hop calculator

Quad calculator  ^{updated  pop} - Cubical quad antenna calculator in java script

J-Pole antenna design  ^pop - Complete guide to build Jpole antennas with online dimensions calculator.

The Carpet loop indoor antenna  ^pop - High performance indoor shortwave antenna, the Carpet Loop II is an ideal step upward for the listener who wants something better than a random wire but doesn't want the expensive dice roll of an active antenna.

TX0DX Chesterfield Isl. - Chesterfield Islands DXpedition 2000

QNEWS Ham Radio News - Daily updates to the weekly QNEWS Ham Radio News service in text realaudio and RF

South Eastern Amateur Radio Group - EI2WRC Based in Waterford, Ireland. Resources, Information and Links about Amateur Radio, Propagation, DX, Repeaters, News, Packet etc. Also contains useful charts and maps and a Photo Album of out club.

HamFind - Search engine dedicated to amateur radio

Delaware County -Muncie - Indiana Police Scanner - Live Muncie Police Department - Indiana & Delaware County Indiana Sheriff Radio Scanner

K-Com - comprehensive line of products for rejection of Radio Frequency Interference (RFI) to telephone equipment.

Palomar Engineers - RFI Kit, ferrite cores, baluns, loop antennas, antenna tuners and various accessories

RT Systems - Online shopping, Programming Software, Icom, Yeasu, Kenwood, Istron, HyGain, MFJ, cat cables interfaces and other radio control cables.

Bird Electronic - Design and manufacture of components, instruments and systems for RF power measurement.

Autek Research - Autek Research make three models of RF Analysts, power and swr meters

Diamond Antenna  ^pop - Base station and repeater antennas, mobile antennas, ,multi-band HF antennas , handheld transceivers, receiving and scanner antennas, power meters, swr meters, power supplies, coaxial switches

CQ DL Amateurfunkmagazin - Ham Radio Magazine of DARC

Dublin Frequencies  ^updated - Army, navy, police, ham frequency in Ireland and N. Ireland

F5EJC QSL printer - QSL printing shop in France

WWLOC - Direction and distance calculator for windows

HyperLog - Full featured logging program available since 1989. Interfaces to most radio's, TNC's, and Callbooks. Runs under DOS and all "flavors" of Windows. Can run on 8088 or fastest Pentium machine. Easy to use with virtually unlimited database capability. Trial version. Program looks like being dismissed by hypersoft.

ERP Calculator - DOS program that will assist you in determining your 2 meter station's Effective Radiated Power (ERP)

KM5KG network designer - Windows98 Program for RF Design

ICOM CI-V Interface schematic - G3VFP schematic for the ICOM CI-V interface with PTT and CW Keying

KI5YN QLF Filter - The QLF filter is a microprocessor based interface designed to go between a standard Morse code key and a radio transmitter

RS232 Interface - This simple circuit is intended for older Kenwood radios and was presented in chapter 22 of the ARRL Handbook.

Grounding Systems for Hams - Grounding Systems for Amateur Radio Stations, Safety grounds vs. radio frequency (RF) grounds, the practical station ground