[Elecraft] K2/100 ALC

[Don Wilhelm]

Anthony,

That sounds like normal behavior to me.
Power control is accomplished in a loop that senses the power output and 
adjusts as necessary to match the requested power.

73,
Don W3FPR

Anthony Bowyer wrote:
>   I have a k2/100 that I want to be sure I understand
> how the ALC should work.
> 
>   It seems it is more responsive than reactive; that
> is power is increased if allowed, up to the maximum
> rather that diminished from maximum as a response to
> some factor, such as high SWR.
> 
>   When I first power the K2 on, if I send a series of
> fast dots, the ALC seems to respond very slowly to
> bring the power up to max. It's faster with dashes and
> very fast with a dead carrier. It will basically
> remain at full power then unless the SWR changes or
> something similar, until it is powered off and then
> back on, at which time it goes through the same
> process.
> 
>   Is this how it should normally work? 
> 
>   The reason I want to be sure is because this k2 had
> some damage from the wrong cable plugged in at the
> DB9. I found components damaged on the KSB2 board but
> everything else seemed to be fine. 
>   I removed the KSB2, jumpered the correct connections
> and put the capacitor back in and CW is working
> correctly; just this ALC behavior is a little
> different than I'm used to. I want to be sure there's
> not another component bad in the ALC circuits
> somewhere.
> 
> Thank you!
> Anthony, NT4X