Store Vertical Antennas CUBE™ Vertical Antenna Feed Line Choke, 1.8-61 MHz, 1.5KW 89.95 USD CUBE™ Vertical Antenna Feed Line Choke, 1.8-61 MHz, 5KW 99.95 USD MAXI-CHOKER Coax Line Isolator, 1-61 MHz, 3KW, SO-239 In/Out, -30Db CMRR 79.95 USD