[Elecraft] K2 Power Control Question

[Don Wilhelm]

Clark,

The "secret" is to properly balance and calibrate the KAT2 wattmeter.

If you do the balance with a dummy load that is truly a 50 ohm resistive 
load ( a 1.13 SWR just does not "cut it"), then adjust the forward KAT2 
pot to give you the same K2 display as indicated by the LP-100, your 
power should track nicely.

Your K2 power output does depend on the correct calibration of the KAT2 
wattmeter.

73,
Don W3FPR

On 12/17/2018 9:03 PM, engineercm wrote:
> I'm becoming more active in QRP contesting and need to make sure that my
> power is <5W.  I thought I was aligned ok until I put my LP100A into the
> shack (what a wonderful instrument).  When Power Control = 5.0, the LP100A =
> 3.0.  Now, I want to be below 5.0, but not that low!  To reach LP100A = 5,
> Power Control must be set at 7.5 (40m) and 8.5 (20m).  This is with the ATU
> = Cal(P), which removes the matching circuits.  The dummy load is a MFJ-264;
> the LP100A SWR = 1.13.
>