rf spectrum

Harford County Amateur Radio Emergency Communications - Trained amateur radio communicators under ARES, RACES and Skywarn serving Harford County, Maryland communities

MicroSignals - MicroSignals produces a line of RF and IF signal processing components that offer high performance at an exceptional value. To achieve this MicroSignals began with an engineering team that possessed an excellent background in RF Transformer and Balun design.

Icom IC-706 mods and manuals - Programming interface schematics for Icom: Programming software for Icom IC-706 (Icom IC 706 IC706) : PDF Service Menu for Icom IC-706 (Icom IC 706 IC706) : PDF Service Manual with schematics for Icom IC-706

W8WWV Icom 706MKIIG simple accessories - Acc1 Breakout Box, Fused Power Cable with Accessory Tap, Microphone Breakout Box, CI-V Interface, Using the Auto Sound System for Receiver Audio

PTT line interface for ICOM IC-706 family - Interfacing tips for ICOM IC-706MKII transceiver with a Collins 30L-1 linear amplifier

QST : Kenwood TS-2000 review - Product review & short takes columns from QST magazine

Yaesu FT-817 / FT-100 CAT interface cable - Connect your FT-100 or FT-817 to your pc with this CAT interface cable

The Yaesu FT-1000mp mark-v review - Luxorion Yaesu FT-1000MP Mark-V transceiver review

Pc interface cable for Kenwood TH-F7E / TH-F6A - Implementation by SM4XDJ, Sweden

Yaesu VX5 Yahoo group - Yaesuvx5: this is a list devoted to the wonderful yaesu vx-5, includes lots of info and thousands of owners.

Fox Delta Amateur Radio Projects & Kits by VU2FD - Amateur Radio Projects & Kits for homebrewers, includes DDS,sound card interface,programmers, hamcom, frequency counter, RF Power Meter, modems and more.

DxLink Priority listing - DxLink, a freeware DX cluster user software. Connect via Telnet or packet. CAT-interface and telnet out to run with your favorite logging software. Now version 1.5

QST signalink review - SL-1 - Designed to handle audio signal interfacing as well as transmit/receive switching Reviewed by Steve Ford, WB8IM

Computer headset interface for icom ic-718 - KR1ST computer headset interface for Icom IC-718

MicroBeacon - The MicroBeacon is the combination of a memory keyer and controllable RF attenuator.

The smk-1 on 20m - Taking the venerable SMK-1 design to 20m and adding an RF amp, audio filter, and a TiCK Keyer ... by Wayne McFee, NB6M

New Developments with PLC in Japan - The Japan Amateur Radio League (JARL) is cautiously watching new developments concerning the commercialization of Power Line Communications (PLC), while continuing to carry out joint experiments with a high speed power line communication promoters' alliance to reduce potential interference to radio communications.

Are you ready for BPL - Broadband over power lines (BPL) is a technique for transmission of high speed data (broadband Internet) over powerlines. Access BPL technology injects radio frequency energy into powerlines which were not designed for transmission of radio frequency energy, and leak substantial energy that causes interference to radiocommunications service

BPL Interference - Zip file taht contains a tutorial section that explains several different BPL technologies

BPL Interference to Radiocommunications - Here are some excerpts from the international radio regulations and fccrules

Broadband over power lines - Compatibility and BPL RF Interference

Bpl interference blocked in europe - Blog post announcing that Ham Radio, shortwave listeners and broadcast band listeners will be protected by Law in Europe

Pc-programming cable for kenwood th-g71a / th-f6a - The interface described here has been verified to work on the TH-G71 and also the the TH-F6A/TH-F7E

Rainbow Antenna Analyzer - A small and inexpensive measurement device designed to determine antenna performance across the amateur bands through use of automatically collected SWR readings

Rf probe - A sensitive RF probe is very useful in a situation where an oscilloscope is not available