HI Ashhar,
I was able to get reasonable SWR values after calibrating the frequency using an ancient but apparently still fairly accurate Fluke frequency counter (hamfest find a few years back.)? I wasn't successful in trying to zero beat it, couldn't pick up enough signal.?
The SWR still reads a bit high compared to other SWR measuring tools I have, I'm thinking of just modifiying the table in the code a bit to compensate.
Thanks for the help, it is an awesome diagnostic tool
73
Mike