A 144 MHz EME antenna array belonging to Sam Dubovtsev (R7AB). The array consists of 64 crossed long-yagi antennas with 2 × 15 elements each, yielding a total gain of about 34 dBi. Vertical or horizontal polarization can be chosen at the flick of a switch. Resting on several wheels the antenna has full azimuth as well as elevation control capability. (Courtesy of Sam Dubovtsev |