[Elecraft] SSB output overshoot

[Don]

Same thing here, with or without an external amp.  CW is as expected.  But 
when switching to SSB I will get full output (sometimes well over 100 watts) 
at any power setting over 11 watts and sometimes cause a shutdown of my 
power supply and a reboot of the K2/100.   This behavior goes away when I 
press RF/ALC to switch the bar display to ALC.  I have been told there is a 
mod that may cure the problem but I have not done anything.  I just make a 
point of switching to ALC display whenever I operate SSB.

Don K7FJ


> G'day,
>
> When I run the K2/100 into my Acom 1000 I usually set the requested power
> to about 30 - 35W.  I seldom drive the amp more than 400 - 500W output.
>
> On CW all is fine but on SSB I notice there is a severe overshoot on the
> output for the first syllable after changing to TX and after a few seconds
> pause in talking.  With the K2/100 barefoot at 30W requested, on CW the RF
> bar is steady on 3 but on SSB it overshoots to 4-5 before settling at 3.
> At present the K2 is set up as twins with the KPA100 co-located with the
> KAT100.
>
> Anyone else noticed this?  It would be interesting to put a scope on the
> output to monitor what happens to the RF level, unfortunately I don't have
> one.
>
> On 40M SSB problem is particularly severe, CW no problem.
>
> Regards,
>
> Mike VP8NO
>