TransTenna
TransTenna Pro
TransTenna MFJ
TransTenna Nano
Ham RF Tools

Software to Calculate Impedance Transformation
onTransmission Lines and to
get more value from your SWR Analyzer


TransTenna and TransTenna Pro software programs were written to make impedance transformation calculations on transmission lines easy and quick to perform. It can be used in place of the Smith Chart to make these calculations.

This allows the user to make an impedance measurement at one end of a transmission line with a SWR analyzer or other impedance measuring equipment and then calculate the impedance at the opposite end of that transmission line.

For example, a SWR analyzer may be used to measure the series resistance and reactance at the transmitter end of a transmission line. This data is then entered into the TransTenna main worksheet. Next, the transmission line properties and frequency of operation are entered into the worksheet. The software will then calculate and display the series resistance and reactance at the opposite end of the transmission line.

This provides an easy method of determining the feed point impedance of an antenna while it is in it's operating location.


TransTenna MFJ is an enhancement for the popular MFJ-259B, MFJ-259C and MFJ-269 SWR Analyzers. It adds a serial port to the SWR Analyzer and provides additional features not found in the basic unit. This adds a PC board and DB-9 connector to the SWR Analyzer. The supplied Windows program replicates the front panel and also shows a Control Panel with additional features.


TransTenna Nano is a software program to interface the Nano VNA. It provides a simplified screen displaying the engineering units most useful for analyzing the data obtained using the Nano VNA. These include series R and jX, reflection coefficient, SWR and more. A Smith chart presentation is available and ranges of frequencies can be graphed.


Ham RF Tools is a set of calculators designed to be useful when making various types of RF calculations. The basic math and equations come from the ARRL Handbook and are supported with a user friendly graphical Interface.


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Reference Material Index

How to get the software