The Radio Waves IceGuard[tm] Antenna Heater System monitors the ambient air temperature and as the temperature drops towards freezing, the antenna control unit applies power to the radome and heats the radome so that ice and snow can not form on the radome surface. The Radio Waves IceGuard[tm] Antenna Heater System consists of our standard antenna with a modified radome that is heated by the antenna control unit when certain temperature changes are encountered. The radome also comes from the factory with a special hydrophobic coating applied, for added protection. The antenna heater control unit can mount directly below the antenna and comes complete with pipe clamps for 21/2” – 4” OD pipe. The unit is powered with -48V DC commonly available at most cell sites. An optional 7-conductor power cable is purchased in lengths of 50′, 100′, 150′ or 200′. There is also an optional antenna heater monitor (AHM) unit that is slightly larger than a pack of cigarettes and is placed in the equipment room and provides status indicator lights and the ability to switch the system from the auto (temperature controlled), off or on modes.