[Elecraft] Sidetone with harmonics at 400 Hz...

[Ken K3IU]

Ho Rob:
If you are getting a square wave out of your sidetone, then you probably 
have a problem someplace. I just put the sidetone from 5413 on the scope 
and is shows an almost perfect sine wave.
73,
Ken Wagner K3IU

Rob Locher W7GH wrote:
> I find the square wave character of the stock sidetone quite annoying on
> my K2 #5004, with the sidetone set at 500 Hz.  However I run the audio
> through a SCAF-1 external audio filter, which makes the sidetone much 
> more
> of a single tone, and far more pleasant to my ear.  The SCAF-1 also
> eliminates the high-frequency hiss in my headphones.  The hiss didn't 
> seem
> like a big deal, until I could make it go away; then I realized how much
> it had been bugging me.
>
> More information on the SCAF-1 is available here:
> http://www.idiompress.com/scaf-1.html
>
> The Standard Disclaimer does not apply...
>
> 73,
> - Rob W7GH
>
>
>
>
> On Sat, 04 Aug 2007 10:25:07 -0700, Steve Kallal <n6vl at yahoo.com> wrote:
>
>> I have a K2, serial #2289, that has a second harmonic in the 
>> sidetone. The
>> sidetone is set for 400 Hz because I do much better with lower 
>> pitches. The
>> sidetone at 400 Hz has a definite square wave sound to it. The problem
>> certainly is not present at 600 Hz, and I don't even want to try 500 
>> Hz. I'd
>> go lower than 400 Hz if the K2 allowed it.
>
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