[Elecraft] KX-1 - cleaning up the squarewave sidetone?

[Phil Wheeler]

Hmm .. I've never noticed that problem, J.  I'll 
go listen again later today.

Phil W7OX


On 3/12/15 10:05 AM, J wrote:
> I did not want to reinvent the wheel, and hoped some mods existed to clean
> up the KX-1 sidetone.
>
> At times, I find it difficult to zero in on a station's 600-hz with my "600
> hz" squarewave.
>
> Has someone come up with a mod?
>
>   
>
> I'm thinking that plenty of audio is available at the sidetone level setting
> (STL), so it might be possible to make an RC filter.
>
>   
>
> It looks like the sidetone enters AF amp via a 1M resistor, R15, to IN1 and
> IN2
>
>   
>
> Thanks