Comet Antenna Model GP-9 144 / 446 Mhz The GP-9 is the highest gain, dual-band fixed station antenna available from COMET 146MHz 8.5dBi 5/8 wave x 3 446MHz 11.9dBi 5/8 wave x 8 Length: 16ft 9in Max Power: 200 watts SSB/100W FM