The RadioWavz B6:1CI Isolation BALUN. Frequency Coverage: 1.8 to 50 MHz. Good for matching a 300ohm load to a 50 ohm load, or 450 ohm load to a 75 ohm load. Designed to handle full legal power with a low standing wave radio (SWR). This is
a BALUN for providing galvanic isolation and intercoupling of an at least partially unbalanced line and a substantially balanced line having similar line impedances which is capable of passing differential signals over a wide bandwidth
while substantially attenuating any common mode signals. This BALUN acts as a 6:1 transformer its main function is to isolate the coax form the antenna, thus acting as RF isolator reduce or eliminate stray RF often found on coax.