100 watt 7 MHz magnetic loop antenna for units and apartments
If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=Cv_RnLpZ9gw . This is Post 2155 in a continuing series of simple ham radio antennas. Radio amateurs living in urban apartments or in deed-restricted housing often have a difficult time getting on the air because of limited antenna options. In this video, Australian ham Peter Parker (VK3YE) gets around the limited antenna space problem by building a fairly compact magnetic loop antenna for the 40 meter Amateur/Ham Radio band. Here are some of Peter's observations: "A description and demonstration of an ultra-simple but 100 watt capability 7 MHz magnetic transmitting loop for units and apartments. There are no hard to get parts or complex workshop skills required to build. Instead of the expensive vacuum variable capacitor, the loop is brought to resonance with a length of RG213 coax (approx 1.85 metres for a 3m circumference loop for 7 MHz). ...