[Elecraft] K2 deaf on CW

[Ron D'Eau Claire]

Roger K8RS wrote:
 My K2/100 performs very well on USB and LSB, but it nearly deaf on CW.   I
have used it mainly as a platform for transverters on 2m, 432 and 903 and
was not aware of the CW issue until this January during the ARRL VHF
Sweepstakes.  I had many 903 contacts that were so weak that I needed CW.
Even with the CW filter set to the widest bandwidth, I could barely hear and
ended up finding them via SSB mode.  A test on 40M showed me that I do
indeed have a problem.   What gives here?  Output is fine in all modes  SSB
is fine in receive in LSB and USB.  Only CW seems poor and on receive only.
I have some ideas, but would like to get some input from the Elecraft group.
-------------------

Since all you are doing when switching between CW and SSB in receive is
changing the filter bandwidth and BFO settings, I'd look at those first. It
sounds like your filter center frequency is so far off that you're
attenuating the signal or, if it seems to "peak" way down in the mud, you
may have the BFO frequency on the wrong side of the carrier. Have you tried
tuning through zero beat to see if you can hear the signal on the 'wrong'
side? 

Ron AC7AC