Peaking signal frequency
I was wondering if there was a piece of software out there that can be used to find the peak signal frequency. I have a tv capture card going into a linux box and some software will find the frequency at 207000000Hz and others will find it at 207028615Hz. The one at the 2070000000Hz breaks up frequently whereas the one at the 207028...Hz seems to work better.
I've also used rtl-sdr on lower frequencies and a different capture card to be able to visualize the frequency and see the strongest one.
Just trying to see how the best way to find a frequency is with ATSC.