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A Stealthy 75 meter antenna - The 75 meter dipole at K7ZB was put up to meet the need for making contacts with friends in the Southwest and Southern California. As usual, it had to be put up so no one can see it from the surrounding neighborhood.

Antenna Impedance measurement - When experimenting on an antenna it's often important to determine its feedpoint impedance at various frequencies across the operating band. It's easy enough to measure SWR, but sometimes we need to know more detail than this

Testing with the Loop Antenna - NRSC AM bandwidth measurements with the loop antenna

The decibel - dB the measure of performance explained at radioworks.com

The Sprint Survival Web Page - This page was put together by some of the sprint veterans as an introduction to this very unique contest. The information here will make it easy for you to enjoy your initial sprint experience.

ECTAR Inc. - Emergency Communications Through Amateur Radio "The coordination of effort between private volunteers and local government resources is critical in assuring the public of the best possible communications link during emergency situations."

Texas Emergency Amateur Communicators - TEAC is an ARRL Affiliated Amateur Radio Club serving the Northeast area of Harris County including Humble, Kingwood, Atascocita, Huffman, Porter and surrounding areas.

W6LY Laguna Woods Amateur Radio Club - Leisure world amateur radio club, laguna woods, ca

Tamiami Amateur Radio Club - The Tamiami Amateur Radio club was organized almost 50 years ago to serve the Venice and surrounding area with emergency communications.

Saint Paul Radio Club, Inc.

TCRC -- Twin Cities Repeater Club - The Twin Cities Repeater Club (TCRC) is a charitable public service organization, incorporated as a non-profit Minnesota corporation, that owns four VHF and UHF repeaters in the Minneapolis/Saint Paul metropolitan area.

W8CTT Pioneer Amateur Radio Fellowship - Serving Akron, Ohio, Summit County and the surrounding area since 1981

W5SFA Austin Radio Club - Serving Austin and Surrounding Counties

WB5LBI Guadalupe Valley Amateur Radio Club - The Guadalupe Valley Amateur Radio Club is an ARRL affiliated group that was formed to bring together the amateurs of Comal and surrounding counties

Surge Suppression Incorporated - Unequaled surge suppression for indoor/outdoor/military and custom needs.

Micro908 Kit - A re-usable control & computing platform for antenna measurement, PSK31 digital modems, audio filtering, signal source & VFO, memory keyer by AMQRP

QRSS and you (About VERY low-speed CW) - Using absurdly low-speed CW for "communications"

ICOM 746 Temperature Measurements - The ICOM 746-Pro has acquired a history of NEC 1678G (IC-151) MMIC and driver transistor 2SK2975 failures. The failure of IC-151 appears to be a combination of ESD damage from electrostatic charge on the antenna entering IC-151, and perhaps thermal heat.

ScanACT - Canberra Australia live scanner - ScanACT, Canberras first 24/7 online scanner streaming emergency services communications for the surrounding region since 2003

Columbia Electronics International, Inc. - Military radio sets for land, sea or air from new current production, unused or rebuilt u. s. military surplus and their accessories and spare parts since 1946 your reliable one stop source.

BIP Electronics Lab Oscilloscope - Freeware windows oscilloscope uses the sound card's input to measure signals. This means that the quality of the scope depends on the quality of your sound card. The scope automatically uses the highest sample frequency available at the input that you select

Sine Wave Generator - Freeware windows Wave Generator use the sound card's output as sine wave output. A built in sweep algorithm is used by audio hackers to measure frequency repsonses of their amplifiers

Lightning Safety & Power Quality Issues - LightningProtection: Lightning Safety & Power Quality Issues. A moderated professional forum by recognized experts, for accurate technical information on lightning, surge and grounding information.

Kenwood TS830S Survival Guide - Excellent collection of TS 830S documents collected from the web and other sources by DL9AI, PDF File

Oscilloscopes - basic use and measurements - A 12 pages pdf article about oscilloscope use, calibrating, operator controls and tips on making measurements by NA5N