[Elecraft] SM6CKU earlier this morning

[Matt Zilmer]

The CW pitch has a bottom limit of 300 Hz.  He probably had the MON
setting at ZERO, which would have the same effect as described.

73,
matt W6NIA

On Sat, 04 Jun 2011 07:40:11 -0400, you wrote:

>Ben,
>
>That would explain it. A pitch of zero would put the audio in the sub audible range and probably put it below the bandpass of the audio amplifiers and filters resulting in muffled or no audio in CW. If you set your IF bandwidth high enough, you would have been able to hear stations that were quite far away in frequency but not the ones you were tuned to. I'm curious as to how the pitch got to zero, I thought the K3 had a lower limit around 400 Hz for the CW pitch. Anyway glad you found the problem. 
>
>73,
>Chuck - AA3CS
>
>Sent from my iPhone
>
>On Jun 4, 2011, at 7:02 AM, SM6CKU <ben at sm6cku.se> wrote:
>
>> I found the problem. For some reason the pitch of the sidetone was zero and was adjusted and sidetone OK. But how can that "mute" the receiver in CW mode?
>> Now everything is normal but these small things makes me nervous.....
>> 
>> 73 de Ben
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