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Box loops are some of the oldest and simplest receiving antennas. They can give excellent performance and are easy to build; several commercial versions are on the market as well. In this video, we demonstrate a very quickly constructed square loop antenna, 6 foot on each side. There are many resources online for these antennas, including:
* AM loop antenna calculator, www.am-dx.com/loop_calc.htm
* Antenna plans and instructions, earmark.net/gesr/loop/amloop4.htm
* Illustration of loop antenna resonance, www.earmark.net/gesr/loop/
* Explanation of the Tecsun signal strength indicators, radio-timetraveller.blogspot.c... and radio-timetraveller.blogspot.c...