[Elecraft] KPA500 Question

[Don Wilhelm]

Joe,

The gain of any amplifier will not be constant across all bands.
If you are driving with the K3, there is a per band power setting so you 
can compensate.  See page 27 of the K3 manual.

73,
Don W3FPR

On 12/18/2016 6:08 AM, Joe Hutchens AJ8MH-Radio wrote:
> This is a question I've been wanting to ask...
>
> I've had a KPA500 for 4 years and I've noticed that 20 meters requires
> more drive.  Most bands require 30 watts or less, but 20 requires 35-37
> for 500 watts out.  In the phone portion of 20, an SWR of 1.4:1 WILL
> cause a fault.  It's just real sensitive to the load on 20.  I have to
> use a tuner and make sure I'm close to 1.1:1.  Works fine into a dummy
> load, but high drive is still required.
>