I don't know what firmware you are using or what instructions you are following.
Tuning for zero-beat makes sense to me when calibrating the si5351 reference oscillator
so the rig is on the correct frequency.
But tuning for zero-beat does not make sense when setting the BFO offset with respect to the 12mhz filter.
I don't think many firmware releases calibrate using algorithm of post??
?/g/BITX20/message/54501or tune the rig following the algorithm of post??
/g/BITX20/message/44278That being the case, there may be weird dependencies between calibrating and setting the BFO,
I suggest you set the BFO first, then calibrate the rig to be on the correct frequency.
To set the BFO, I suggest you tune in an amateur SSB station, then set the BFO for best received audio.
Ideally, find a station where the operator's voice is similar to your own (low, medium, or high pitched).
When transmitting, the filter will be doing the same thing to your voice as rig does when receiving.
Jerry?
On Mon, Oct 29, 2018 at 08:55 AM, Matthias Zwoch wrote:
Surely the BFO must be corrected. But how? I followed the instructions, got a AM station with known frequency and set BFO to zero beat.??
