The RBA-4:1 Balun Current Balun was designed to allow easy interface of ladder line antennas and long wires to the LDG line of Automatic Antenna Tuners. The Balun operates “stand alone”, thus does not require an LDG Tuner. It may be used with any of your long, random, or ladder line antenna projects. Features Compact, sturdy construction Standard SO-239 jack for coax input Twist-on binding posts for ladder line, longwire or random wire attachment Can be waterproofed for outdoor use Broadband operation; covers the entire HF spectrum from 1.8 – 30 MHz Handles up to 200 watts continuously