The Comprod 778-70SM-1/4 406 – 512 MHz UHF exposed eight-dipole antenna is a 210 in vertically polarized side-mounted antenna with an offset pattern. This antenna features 1/4 wave spacing, 11.0 – 11.5 dBd nominal gain, 1.5:1 VSWR, 300 W power rating, DC ground lightning protection, and an N Male termination. The mast outer diameter is 2.4 in.