Diamond Original SG7500A Dualband Mobile Antenna The Diamond SG7500A is a 2 meter and 440 MHz (70 cm) mobile antenna. It is a 1/2 wave on 2 meters providing 3.5 dBi gain and a 2 x 5/8 wave on 440 providing 6.0 dB gain This antenna can handle up to 150 watts. VSWR: 1:1.5. This antenna is approximately 41 inches (1.1 m) high. The antenna is black and silver. The connector type is UHF (for PO mount). This antenna does not include the mount or coax. One of Diamond Antenna's Supergainer Premium mobile antennas.