Transmission line loss due to SWR.
Many are not aware of the additional losses created in a transmission line due to high SWR, the calculator below shows the total line loss and the additional line loss you will have in your transmission line at a certain level of SWR.
In order to get a good calculation, measure the SWR directly at your
antenna (the load) with an antenna analyzer or an SWR-meter and measure the loss
of the transmission line with an antennna analyzer or a two-port vector network
Please refer to the operating manual for your instrument for instructions on how to make the specific measurements.
This page was last updated: 02.11.2015