I've found it is necessary to set the BFO oscillators first. A key is to adjust
to the frequency and in the exact sequence as published. You may need to do
this 3 or 4 times as I've found some interaction between adjustments. Be sure
to adjust all modes, even ones you may not use.
Once done place the radio in CW transmit and adjust the Master Oscillator such
that the display indicates the measured transmit frequency. 20 meters
preferred.
Check all bands in CW mode and note the errors. You will have to accept one
setting of the
Master Oscillator minimize the errors. Don't expect to get it absolutely
correct on every band. Usually +/- 50 Hz is about normal.
Bob, K4TAX
Sent from my iPhone
> On May 7, 2018, at 12:56 PM, Gary Hendricks <k4mt1950@charter.net> wrote:
>
> I see this beat to death here but I have a question about peculiarities on
> this radio.
>
> I have seen to adj the BFO first and MO last. I have a very accurate HP
> counter referenced to 10 MHz stnd. Als a HP sig genrator.
>
> I find if I set BFO freqs to within 1 HZ that unless MO is adjusted off of
> exact 20 MHz the radio is off freq on all bands. To get it on freq after
> aligning BFO I must tweak the MO away from 20 MHz to end up on freq. I have
> always found MO freq wg=hen set dead on with other radios and BFO set correct
> the radio was on freq. Guess I am asking too much from this radio design.
>
> I remember seeing this on a corsair also years ago. I also seem to see a
> difference between TX and RX freq. Also the freq error changes from band to
> band I suppose caused by errors in the crystals for each band.
>
> I tried setting MO for exact TX freq but then BFO had to be altered to get RX
> freq right. Seems like chasing a moving target.
>
>
> Gary K4MT
>
>
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