Baluns

This is a balun originally designed by Guanella and subsequently improved by Dr. Jerry Sevick (W2FMI). By utilizing Thermaleze wire inserted in Teflon tubes, Dr. Sevick was able to substantially increase the breakdown voltage between both conductors and...

Heavy duty 4:1 tuner balun utilizing stacked cores to provide a very high power rating across all HF frequencies.  Constructed using our enhanced design with Teflon tubing over heavy build Thermaleze insulated wire. If you are...