Mounted vertically on a nastl base 2.62 in. Dia, radiating module 1.50 in. Dia; 84.25 in. H; uhf freq 225 to 400 mhz; vhf freq 116 to 150 mhz; omnidirectional; 2 n-type terminals with 50 ohms impedance located on butt end of base; min 30 db isolation; 50 w pwr; vswr 2 to 1 max; radome material filament wound fiberglass