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:[email protected]>
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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