[Elecraft] (K2) PROBLEM WITH SSB

[Michael van Hauten]

>
> Dear all,
>
> currently i work on my third K2 #5619. I have  problems with the  
> KSB2 after the ssb mod:
>
> The modulation is bad and it sounds as if there is RF in the  
> microphone line (the voice sounds modulated in it self). I use a  
> dynamic peiker mike and i have tested some other dynamic mics (eg.  
> Heil with HC4).
> The mods i have installed are the higher compression mod by  
> changing the the resistor network  to 5 single 150k resistors and  
> the other mods described by DL2FI and KI6WX.  I do not remember  
> whether the problem exists before the mod. All filters are adjusted  
> fine with the help of spectrogram and the receive sound is very  
> clear and good. I also see on my output meter a jump by slowly  
> increasing the mic input. It seems that the amplifier works not in  
> a linear mode or the alc works not correct. it seems that the sound  
> is much better on 80m than on 10 and 20m.
>
> Where is the problem? Thank you for your  help.
>
> Michael, DC0ZO
>