Bill,
Yes, do the CAL FIL calibration first. If that does not cure anything,
then proceed with the rest of the alignment, but I doubt if that will
help much - the K2 alignment is usually quite stable over time.
The bandpass filter and other alignments are not going to change the
relationship between the SSB filter and the CW filter - only CAL FIL
will do that.
If you still have a problem after the full CAL FIL, you will usually
find a problem in the CW filter bank - like a bad crystal (but that does
not happen often). Reflowing the soldering on the IF crystals on the RF
Board may help.
73,
Don W3FPR
On 6/12/2019 8:23 PM, Bill Coleman wrote:
Yeah, this is looking more like a calibration problem.
I’m listening to W1AW code practice on 14.0475. As I cycle through the filters
the S-units are roughly the same through OP1, 0.4 and 0.16. But on the 1.0
bandwidth, it is often 1-2 S-units lower. If I tune about 200 Hz lower, I get
the same number of bars.
I’ll update you when I have a chance to do the calibration.
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