[Elecraft] ALC and the K3

[Don Wilhelm]

Dave,

The K3 does not overshoot due to the way output power is controlled (it 
is different than other amateur transceivers in that regard.
So unless the amplifier contains protective circuits which activate the 
ALC for excessive SWR or other amplifier faults, there is no need to 
connect the ALC line.  Even if the amp contains such protective 
circuits, adjust the ALC in the amp so it does not activate with normal 
operation.
Set the power so the amplifier is not overdriven.

If the ALC is activated in normal operation you will be creating 
excessive IMD in your transmit signal - you can hear a lot of that going 
on during a contest weekend.

The K3 has a menu setting (PWR SET) that can allow you to set the 
maximum power on a per-band basis.  You can use that to avoid 
overdriving the amplifier.

73,
Don W3FPR



On 12/21/2017 12:45 PM, Dave Cole (NK7Z) wrote:
> I want to run ALC for my amp if for no other reason to protect the amp 
> from overpower events.  I understand Elecraft does not recommend the use 
> of ALC...
> 
> Exactly why is that?
>