Demonstration of standing waves on a string. How the standing waves are generated, harmonics and more is explained here.
By James Dann for ck12.org CC-BY-NC-SA
A look at a simple superhet receiver designed for CW reception. Describes each stage and demonstrates the homebrew crystal filter in operation. A 7 MH... Read more
Sounds from Amateur Radio Satellites Amateur Radio Satellites 1961 – 1975 Amateur Radio Satellites 1976 – 1985 Amateur Radio Satellites... Read more
Get ready for action as you hear signals that you may never have heard before. The DJ-G7 tunes 0.530-1299.995MHz continuously, and you can enjo... Read more
By Caleb Henry Via Satellite 10-28-2015] NASA has selected the Chair and Professor of Ohio State’s Department of Electrical and Computer Engineering J... Read more