[Elecraft] ALC control of W6PQL amp from my K3

[Jack Brindle]

As an example of how we feel about ALC with the K3 and KPA500, neither of my custom-made AUX-IO cables has the ALC pin (pin 15) connected. It is just not needed.
If the KPA500 needs to protect itself, it will.

73!
Jack, W6FB


> On Mar 9, 2019, at 10:23 AM, Bob McGraw K4TAX <rmcgraw at blomand.net> wrote:
> 
> I would emphasize with the K3S and KPA500, if one follows the set-up EXACTLY as described in the KPA500 manual page 16 & 17, and in the K3S manual page 29 & 59,  all will be well with the EXT ALC engaged.    Anything else will be a PICNIC problem.
> 
> I suggest the set-up be done with a 50 ohm resistive dummy load connected to the amplifier.   Therefore any major deviation in output load will then provide a margin of safety via the ALC. Correctly set-up one can then observe any excessive drive applied to the amplifier or a load which exceeds the recommended load range by an indication on the transceiver ALC indicator.    This ONLY applies to the K3S and KPA500 as described.
> 
> 73
> 
> Bob, K4TAX
> 
> 
> 
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