Dual Band VHF UHF Antenna Feed line Choke - J-Pole, Verticals, Hand Held Beams - Choose 1/4", 1/2", 3/4" cable size, 100-500 MHz
Combo split bead kit for dual band antenna like 2 meters/450 MHz (J-poles, dual band verticals, etc) - 4 beads covers VHF and UHF band. Each set provides over 500 ohms of common mode resistance to keep antenna current off the coax and on the antenna for better radiation pattern and less coax radiation which can cause RFI to nearby electronics.
Simple to install at antenna feed point - just snap on!
Simple, effective and cheap solution - buy it now!