Edward Larsen The SaddleBrooke Amateur Radio Club demonstrated radio equipment and antennas at the clubs and groups activities fair on Jan. 20. On display were a ’70s era AN/PRC-47 portable high frequency (HF) transceiver used by the U.S. Marines in Vietnam, a modern Elecraft K3 transceiver, a Yaesu FT-991A transceiver, an LNR Precision HF portable…