Units by Antenna Type

This is a unique design by Dr. Jerry Sevick (W2FMI) that combines a 25 ohm balun with a 1:2 unun for final transformation to 50 ohm unbalanced transmission line. Used anywhere there is a need to transform 25 ohms balanced to 50 ohms unbalanced...

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...

Utilizing two (2) individually wound 4:1 current baluns cross connected in series/parallel, a 6:1 design is created that will handle high power from 3.5 to 54 MHz. Good choice to feed multiband antennas such as off center fed...