[Elecraft] K2: Attempting K2 SSB modulation and ALC mods, but board too old?

[Don Wilhelm]

Andy,

Does your SSB OP1 filter look good on the Spectrogram display?
You must select the OP1 filter for the SSB FL1 filter position.
SSB FL1 is the filter used for SSB transmit - there is no choice, and 
you must adjust the BFOs for good response - filter passband low 
frequency corner at 300 Hz and the high frequency corner at 2600 Hz.

73,
Don W3FPR


Thanks for the prompt reply.

  I have made both the mods you mentioned below (filer bandwidth and 
A2B).  In CW the K2 functions flawlessly, I get out more than 100W out 
on most bands.

  I am using the MH2 or Heil Pro set and just get horrible audio reports 
and the ALC does not play well.  On 40, the ALC comes on with 4 LEDs, 
but without reaching 100W; on other bands ALC never lights any LEDs.  It 
may be possibly that the SSB board is just misaligned.  It was my 
understanding that the filters for SSB are only used in receive, but in 
transmit the same filter as in CW is used, so alignment may not be the 
problem.

Should I start with redoing all alignment steps for the SSB board?

Thanks Andy, KU7T