[Elecraft] Ideal input voltage for TX on KXPA100?

[Don Wilhelm]

David,

Turn it up until you see at least 13.8 on the KX3 when idle, then check 
the voltage during transmit.  You really  can go up to 14.5 volts with 
no harm.  If the voltage drops by more than 1 volt, you have too much 
resistance (too many connections) in the power cord run from the power 
supply.
Connect the power cable to the KXPA100 directly to the power supply 
terminals.  With a 15 amp draw there will be a substantial voltage drop 
across a device like a Rigrunner.

73,
Don W3FPR

On 5/14/2017 2:43 PM, David Orman wrote:
> Hi,
> 
> In order to maximize TX quality and cleanliness from the KXPA100, what
> should I aim for regarding input voltage on 100W keydown as seen by the KX3
> display option PS? I've got an adjustable Astron VS-70M, but would like to
> power other equipment, so am trying to find to sweet spot for the radio