Here’s a really simple way of double checking how to much to trim your antenna elements.
You only need to type in the numbers in the Cyan boxes.
- For Dipoles: Cut / Add the result to each leg
- For Verticals: Cut / Add result to your vertical radiator
Just type in where it is resonant right now – then type in where you would like it to be resonant and the spreadsheet will auto-calculate the trimming.
Film: How to use the SWR Adjustment calculator.
Thanks to Ted KJ7SNW for the following code: