Loop Antennas

Excellent broadband balun that can be used anywhere there is a need to transform 100 ohms balanced to 50 ohms unbalanced. Its most common use is at the feedpoint of quads and mono band loops allowing the elimination of matching networks...

This is a another excellent broadband design that can be used anywhere there is a need to transform 125 ohms balanced to 50 ohms unbalanced. It can be used at the feedpoint of a coaxial fed multiband loop as described below, but...

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...