[Elecraft] ALC control of W6PQL amp from my K3

[John Simmons]

Wes,

Once I got my LP100, I began to see the same behavior with my K3. This 
type of output anomaly is a huge reason to use ALC.

73,
-John NI0K

> Wes <mailto:wes_n7ws at triconet.org>
> Sunday, March 10, 2019 9:39 AM
> Indeed.  Folks who would never think to turn off the AGC in their 
> receivers get weak-kneed at the thought of AGC (ALC) being used in the 
> transmit loop.  In "Fundamentals of SSB", Collins radio speaks of ALC 
> (pp.7-10,11) without any negativity, and in fact calls it a form of 
> speech compression.  As in many things, the devil is in the details.
>
> I suspect most of the Elecraft faithful would also be surprised to 
> know that their beloved K3s use internal ALC as well as digital power 
> control. This is not perfect, I've observed overshoot, power slowly 
> increasing to set level and low level power jitter*.
>
> * You need a spectrum analyzer to see this and it's unlikely to be 
> heard on the air, but it's there.
>
> Wes  N7WS
>
>
>
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