[Elecraft] ALC and External Power Amplifiers (K2)

Mon May 12 15:23:01 2003

Thought of that but then the rig has to work that much harder.

--- Bob Nielsen <[email protected]> wrote:
> On Mon, May 12, 2003 at 10:15:56AM -0700, Vic Rosenthal wrote:
> > Eric Swartz WA6HHQ - Elecraft wrote:
> > >In general we and a number of manufacturers do not recommend using
> ALC 
> > >between the rig and amplifier since it almost always ends up
> causing 
> > >significant problems with overshoot etc. when the rig relies on
> the 
> > >amplifier to limit its drive power. This in turn leads to key
> clicks on 
> > >CW and more splatter on SSB.
> > 
> > That is correct -- ALC should not be used in normal operation.
> > 
> > However, it can be a valuable safety feature.  For example, my amp 
> > requires about 50w drive to produce 1500w output.  I don't know
> what 
> > would happen (and don't want to find out) if I were to have my
> K2/100 
> > set for 100w and then forget to turn the power down before
> activating 
> > the amp!
> 
> Swamping resistors, anyone?
> 
> Bob, N7XY
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=====
Harry - AB2PN

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