Diamond BU-50A This 1:1 balun is suitable for wire dipoles and helps reduce feed line radiation and radiation pattern distortion.
DO NOT use this balun with any type of antenna tuner or match box when the VSWR (before matching) is greater than 3:1. If the VSWR is below 3:1, a
match box can be used as long as the power levels are kept below the limits shown in the Specifications. When these power and VSWR limits are exceeded, the extremely high standing wave voltage present at the feedpoint causes the breakdown voltage of the balun to be exceeded.
Frequency: 1.7 – 40MHz
VSWR: Less than 1.5:1
Max.power rating: 1.2kW(PEP)