GAM Electronics TG-5-SH 500 watt VHF 156-174 MHz, 5 dBd gain antenna

(power in watts to antenna X 3.162). Gain: 5 dBd, 7.1 dBi. GAM Model No. Applications: AIS or VHF Marine Band, Amateur Radio, MURS, Public Service. Can be tuned to any desired frequency between 156 – 174 MHz.

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