Specialty Units

We have updated and modified the design of this unit to allow the use of a common UHF "tee" on the output for the dual feed of the MA5B yagi.  This allows us to build for a lower cost and reduced time which we can pass along to the buyer. ...

This is a unique 1:1 transmission line transformer intended to provide highest possible isolation between input and output.  Consequently there is no direct electrical connection between the input and output with all RF energy being...

This new release provides excellent choking and feedline isolation across the full HF spectrum, but is a departure from the normal 1:1 isolation/choke balun.  Rather than a 50 ohm characteristic impedance, this balun utilizes a bifilar pair designed...

This is a departure from the normal 1:1 isolation/choke balun and utilizes a bifilar pair designed to maximize inter winding breakdown voltage. This is a departure from the normal 1:1 isolation/choke balun and utilizes a bifilar pair designed to maximize...

This is a departure from the normal 1:1 isolation/choke balun and utilizes a bifilar pair designed to maximize inter winding breakdown voltage.found on multiband antennas such as doublets and multiband loops. The balun functions to transform balanced...

After much research and testing, a new transformer design for End Fed Half Wave (EFHW) antennas has been achieved. Developed by Bob Glorioso, W1lS and Bob Rose KC1DSQ, they discovered that most transformers for EFHW antennas used higher impedance...

After much research and testing, a new transformer design for End Fed Half Wave (EFHW) antennas has been achieved. Developed by Bob Glorioso, W1lS and Bob Rose KC1DSQ, they discovered that most transformers for EFHW antennas used higher impedance...

After much research and testing, a new transformer design for End Fed Half Wave (EFHW) antennas has been achieved. Developed by Bob Glorioso, W1lS and Bob Rose KC1DSQ, they discovered that most transformers for EFHW antennas used higher impedance...

Jerry Sevick (W2FMI) specifically researched and designed this tuner balun to provide a very constant 50 ohm input impedance on the lower frequencies where most baluns can drop by 20-40%.  In addition, the Thermaleze wire/Teflon tube windings on a...

For those of you who own one of the fine tuners manufactured by Drake, this is a balun that can be easily installed on your existing PC board in place of the original windings. If you do not currently own a B-1000 balun, you can elect to mount this balun...