Balun Designs

75 ohms unbalanced to 50 Ohms unbalanced Unlike Baluns, Unun's (unbalanced to unbalanced) provide impedance transformation for antennas that are naturally unbalanced because of their design...

32 ohms unbalanced to 50 Ohms unbalanced Unlike Baluns, Unun's (unbalanced to unbalanced) provide impedance transformation for antennas that are naturally unbalanced because of their...

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...

100 ohms unbalanced to 50 Ohms unbalanced Unlike Baluns, Unun's (unbalanced to unbalanced) provide impedance transformation for antennas that are naturally unbalanced because of their...

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...

This model is the very useful 4:1 current balun, one of the most versatile ratios for a low power balun. Great for off center fed dipoles, ladder line fed multiband dipoles etc. Extremely...

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...

This balun is an excellent step up from the model 4113 and is not sensitive to high power reflected RF like the model 4115.  The design is the perfect choice for two types of operation. ...

This is a balun originally designed by Guanella and subsequently improved by Dr. Jerry Sevick (W2FMI sk). By utilizing Thermaleze wire inserted in Teflon tubes, Dr. Sevick was able to substantially...

This is a great all purpose 4:1 current balun designed for those who would like the combination of a 4:1 balun capable of tolerating a compromised antenna installation and still provide a high level...

Jerry Sevick (W2FMI) specifically researched and designed this tuner balun to provide a very consistent 50 ohm input impedance on the lower frequencies where most baluns can drop by 20-40%.  In...

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...