Monday, July 27, 2015

Simple Ham Radio Antennas--Portable Crystal Radio using Loop Antenna and Pizza Box. Post #501

If you have trouble viewing this video, please enter this URL into your search box: An excellent tutorial on how to build a portable crystal radio using a loop antenna coil inside a pizza box.  The coil that the tuning/variable capacitor resonates serves as the antenna by being a very large coil.  According to the maker, "Rimstar.Org," radio stations are found by adjusting the tuning capacitor and pointing the face of the loop at a nearby radio station. This crystal radio uses a crystal earphone and a germanium diode (1N344, 1N60, 1N91, 1N270, 1N277, or a 1N283).  Silicon diodes can be used, but the antenna may need more wire to pick up a station.  For more details, visit the author's website:  Music in this video is "The Path of The Golden King", by Kevin MacLeod (  For the latest Amateur Radio news and events, please check out the blog sidebars.  These news feeds are updated daily.  You can follow our blog community with a free e-mail subscription or by tapping into the blog RSS feed.  Thanks for joining us today!  Aloha es 73 de Russ (KH6JRM), along the Hamakua Coast of Hawaii Island.