Nov 30, 2011
Antenna Wavelength Calculator in MS-Excel (3 KB .zip download)
I cobbled together this quick-and-dirty spreadsheet when I was designing an antenna for a Part 15 (low-power) FM transmitter system. Calculate the length of 1/4-wave, 1/2-wave, 5/8-wave and full-wave radiators, based on frequency. Reverse-calculate tuning frequency, based on known antenna length. Also convert between gain (dB) and power ratio.

This little goodie and more can be found on the Free Stuff page.