[Elecraft] K2 filter response question

[Don Wilhelm]

Rolf,

That looks like a 3rd harmonic (of the audio) to me - perhaps caused by
overdriving the soundcard.

73,
Don W3FPR


> -----Original Message-----
>
> I have been thinking my K2's filters. I worked EARTTY today. Look for
> the following pictures. K4GMF is transmitting around 1000Hz. There is an
> unnecessary extra audio peak around 2.5 to 2.8kHz
>
> http://ugly.blerp.org/~oh6kxl/350Hzfilter.jpg
> http://ugly.blerp.org/~oh6kxl/350Hzfilter2.jpg
>
>