homebrew rf attenuator

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.

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.

K0JD's Ham Homebrew Pages - K0JD's home construction projects, featuring the R2/T2 modules by KK7B

F6CRP Denis Priority listing - Site devoted to weak signal traffic SSB/CW V/UHF meteor Scatter,tropo, aurora, fai, ES homebrew

F5SOH Laurent - Packet with Linux, homebrew, Talco mods. in French

IK1ZOY Giancarlo Priority listing - Collection of telegraph keys homebrew antenna projects links to radio software

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

Hellschreiber beacon project - This web site describes a low power beacon system to be used for propagation and performance tests on the lower bands. The beacon offers CW (on-off keyed) modes and FSK modes; the traditional Morse ID mode, and Feld-Hell, another highly noise immune CW mode.

ST2NH Nader - Many satellites homebrew projects from the sudanese amateur radio station ST2NH active on satellites, ISS, HF phone and digital modes.

CQ DL Amateurfunkmagazin - Ham Radio Magazine of DARC

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

KM5KG network designer - Windows98 Program for RF Design

100W HF QRO linear amplifier - Based on Motorola MRF454, schematics and component list

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