Arresters should be installed as close as possible to the equipment to be protected, often at the point where the coax cable enters the building. They can also be installed near the antenna for additional protection. A great UHF PL259 arrestor to protect your life, protectors offer HF/VHF/UHF other frequency equipment with extremely low loss.They boast an insertion loss of less than 0.1 dB. Ideal for CB Radio, HAM Radio Gear, 2-Way Base Stations. Coaxial UHF arrester also known as surge protector, surge divider. It is usually connected between the grid wire and the ground wire, ham radio accessories, sometimes it is also connected next to the electrical winding or between the wires. Coaxial UHF Lightning Arrester,PL259 UHF male Plug TO SO239 UHF Female ,PL-259 Lightning surge protector for Coaxial cable. With ground screw connection for easy install. Frequency Range: DC-3GHz | Discharge Voltage: DC90V | Impedance: 50 ohms | Insertion Loss: <0.1 dB| Max Power: 50W | Max surge voltage let through:200 mV.