Re: Does anybody know how to calibrate CEC firmware ?
On Fri, 8 Nov 2019 at 09:22, Adrien F4IJA <@Adrien_Grelet> wrote:
The BFO needs calibrating to make sure the signals you're trying to
receive are in the passband of the IF filter.
That's why you can calibrate it quickly by looking at your audio
output and just looking for the noise passband. The filters vary board
to board, so the BFO calibration can't be to a specific frequency - it
is a frequency based on what the matched crystals in your ~12MHz
filter centre on.