[Elecraft] K2 SSB problem

[W3FPR - Don Wilhelm]

Gerhard,

There could be a problem, or there may be no problem at all.  What is the
audio source and  level that you are driving into the mic jack?  If it is
not a pure sine wave or the level is too high, it will have harmonics or (if
too high a level) can cause harmonics if the balanced modulator is being
overdriven.  Sorry, but there is just not enough information in your note to
allow me to venture even a guess.

In any case, harmonics of the modulating audio are not any indication of
frequency modulation - frequency modulation would cause a variation in the
frequency of the carrier plus/minus the modulating frequency.

73,
Don W3FPR

> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net
> [mailto:elecraft-bounces at mailman.qth.net]On Behalf Of Gerhard Schwanz
> Sent: Friday, April 01, 2005 4:25 AM
> To: elecraft at mailman.qth.net
> Subject: [Elecraft] K2 SSB problem
>
>
> Hi group!
>
> I have a little problem with SSB it seems. During the contest last weekend
> someone told me I had "frequency modulation" on my signal. Not
> knowing what
> this should mean I at least thought I would check the signal when
> bands are
> quieter. I just did. And although the audio sounds ok there is maybe a
> little problem. Sending a 1kHz audio signal the receiving station
> could hear
> the same signal at +1kHz and -1kHz with -20dB max. These signals should be
> at least -40dB, correct?
>
> Question. How do I fix this?
>
> Thanks!
>
>
>
> Gerhard Schwanz
> DH3FAW
> mailto:gerhardschwanz at yahoo.de
> http://www.gs-personal.de
>
>
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