Easy enough to place the BFO at the center of the 12mhz crystal filter,
then the near zero hz beat comes through strong as ever.
In the equations of post? ??
/g/BITX20/message/44278just set the value of "pbt" to zero.
There is capacitive coupling through the audio chain that will attenuate
those extremely low frequencies, that may need to be adjusted somehow.
On Thu, May 31, 2018 at 09:02 am, Tim Gorman wrote:
The biggest problem is that the SSB
filter causes a drop-off at the lower frequencies making the beat tone
disappear. You kind of have to interpolate even with the meter.
