You have probably heard people talk about ionosphere virtual height. What is it and why is it important for HF propagation?

Slow Scan Television (SSTV) images transmitted from the International Space Station and other ARISS supported satellites

This site will be the focal point for some of the best SSTV images received during Oct 2008 and beyond. Images will be downlinked by ISS on 145.800 MHz. To view some of the received images transmitted from the ISS

The General Radio Experimenter was a revolutionary magazine, that offered students, engineers and hobbyists invaluable content and applications for electronics.

Organized by year for easier browsing, following are links to every General Radio Experimenter, over 500 issues, that span the 1920's through the 1970's for viewing and download.

Radio-Electronics was an American electronics magazine that was published under various titles from 1929 to 2003. Hugo Gernsback, sometimes called The Father of Science Fiction, started it as Radio-Craft in July 1929. The title was changed to Radio-Electronics in October 1948 and again to Electronics Now in July 1992. In January 2000 it was merged with Gernsback's Popular Electronics to become Poptronics. Gernsback Publications ceased operations in December 2002

The Universal Radio Hacker (URH) is a complete suite for wireless protocol investigation with native support for many common Software Defined Radios.

Motorized 10-80 Meter Adjustable Dipole

DRM for mediumwave has been tested and documented for two decades