@freemo
Looks nice even if it doesn't have over a hundred turns
@ab3xu Sadly any more than that and it wont work well on the frequencies I wanted. The 126 turn one I tried out had some cool characteristics (like very low insertion loss) but self-resonated so much as to be useless.
@bamfic
Yup everything is open-source, including hardware and software. so far I am the only author. Version one worked well and was accurate, version 2 expands on it and will be more useful with a better UI. V2 will be the one someone would actually want to build which is what im developing now. V1 was a proof of concept that worked find had to be explicitly told what frequency it was on (no frequency counter).
Oh i forgot to mention. V2 I'm working on will have 2 possible configurations. You can hook up a single Directional Coupler to it as you might a SWR meter. Or if you want you can hook up two, one before and one after your tuner. In this way the meter can track the actual antenna performance and the tuned performance at the same time. I might even add logging for analysis on a computer, or to review for checking ones on logs (since it would record the frequency time and power of any transmission, along with other info).