[Elecraft] ALC control of W6PQL amp from my K3

[Don Wilhelm]

Bob,

It is important to understand that ALC does not control the amplifier, 
it is an attempt by the amplifier to control the transceiver.

ALC is sent FROM the amplifier in an attempt to control the power of the 
transceiver.

Used indiscriminately, that will cause distortion in the driving transciver.

Elecraft does not recommend the use of ALC for power control because of 
that.  Set the power output of the transceiver to drive the amplifier 
properly and adjust the amplifier ALC to produce no ALC at that point. 
If the amplifier has fault detection, then ALC can be used to drop input 
power if a fault occurs - that is the only legitimate use of ALC.

So in many cases, an ALC connection is not needed.

73,
Don W3FPR

On 3/8/2019 9:11 PM, Bob KD7YZ wrote:
> Wondering how to do this.
> 
> I see a cable on https://www.arraysolutions.com/k3alc
> 
> A K3 ALC cable ...
> 
> or any other ideas ?
> 
> I have a W6PQL 2m SSPA with an ALC input on the back
> 
> 
> many thanks.
> 
> 
> --
> 73
> Bob KD7YZ
> AMSAT LM #901
>