ANDREW~4 Bay 6db VHF Exp Hrns Omni exposed dipole antenna, 164 - 174 MHz, 360° HPBW, fixed electrical tilt. Two-piece mast for ease of shipping. N Male Connector. Includes DB365-OS Pipe Mounting Kit that consists of two clamps for mounting antennas to round members 1.25 - 3.5 in (35 - 89 mm) OD round members.