kenwood ts 570

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

XE1YJS Tower and antenna setup - What is the procedure of a tower and antennas instalation? Pictures and comments of this antenna installation in Mexico

K2 Logger - K2 logging system by WB2QAP, logs ARCI sponsored contests and others with same point system

N3XGR's ARES-RACES page - Links to US local emergency service local units

RSGB North East Regional Group Page - Regional News, Contacts and Resources for for UK Radio Amateurs in The RSGB North East Region

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

US Police Scanner  ^{updated  pop} - Live, 24-hour audio broadcasts of police scanners in major cities around the United States.

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

Wellbrook Communications - Broadband active loop antennas for radio amateurs and hobbyists

Hal Communications - HF radio data communications products, analog and DSP modems

Quantics W9GR - Digital Signal Processor Kits

W2IHY Audio Products - Band audio equalizer and noise gate compatiable with ICOM, KENWOOD, YAESU and other radios

Radio Adventures - Design and manufacturing of electronic components, kits, and accessories for the amateur and commercial communications. CMOS Keyers, W1AW receivers, PC borads kits

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

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

QRV Imprints - "We are mahers of Callsign Novelties such as:Golf Caps,License Plates and Golf Shirts, all with ""Ham"" callsigns"

DX Report from Colombia - DX Reports objective is to quickly issue the DXLogs made by Yimber Gaviria in Colombia

4X43141 SWL Info - In this site SWL can find many thing he needs: Contest rules and results, software, awards info and photos, forums, chat and more.

Satsoft - Satellite antenna design and systems engineering software for windows

Zelscope  ^pop - Zelscope is a Windows software that converts your PC into a dual-trace storage oscilloscope and spectrum analyzer. It uses your computer's sound card as analog-to-digital converter, presenting a real-time waveform or spectrum of the signal - which can be music, speech, or output from an electronic circuit.

PLL2 - 2nd Order phase locked loop design for passive and active circuits. Bode plot, step response, design parameters

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

SSB and CW Filter - A pdf file with schematics of an ssb and cw filter AF amplifier

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