    AN-SOF ANTENNA SIMULATOR
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2-element quad antennas are very popular due to their compact size and gain similar to a more element Yagi. In addition, they can be designed to obtain an input impedance of 50 Ohm.

This design can operate at 27.5 MHz.

Read more: https://antennasimulator.com/index.php/knowledge-base/2-element-quad-antenna/
