[Elecraft] NG0R - KSB2 low audio level

[Don Wilhelm]

  John,

OK, I am done with this thread.  If one has to drill down in prior 
emails to get the information needed, I cannot help.  Maybe someone else 
will remember your thread and come to your aid.
This is a volunteer effort on my part and I do not wish to be asked to 
do extra-ordinary things to help.
If you want a paid position to come to your aid, then the folks at 
support at elecraft.com are available.
I offer what I can, but I will am not willing to help if criticized for 
shortening a thread in a response.

73,
Don W3FPR

On 1/22/2011 11:46 PM, John Hoaglun wrote:
> Hi Don,
>
> That info was in the email chain until your response trimmed down the message.  :-)
>
> I am using an (older) Icom HM-36 mic (and have tested with two Heil
> headsets with similar results).  The menu is set to:  SSBA=3 and
> SSBC=4-1  I also indicated that I had tested (during my original
> testing) with a modulated CW signal from the computer as well with
> similar results... the SSB audio is very low.
>
> You had asked two other questions in the original email chain:  The K2
> S/N is 6119 and the SSB board was bought and assembled a couple of
> years ago.
>
> Looking at the schematic I am not seeing much in the way of adjustments
> on the SSB circuit beyond the the compression at the SSM2165 which
> controlled by the MCU.
>
> A pre-amp is a kludgy solution IMO. (It might be ok to use it for a quick test
> to see if that is the problem.)
>
> Thoughts?  Guidance from anyone else with a K2+HM-36 ?
>
>
> Thanks, JH
>