[Elecraft] KX1 output power measurements

[Paul Huff]

I was using my KX1 in the backyard yesterday to make some final adjustments and tests on a portable vertical that I will be using for field day.  I noticed that when the KX1's antenna tuner indicated a high SWR it also indicated a much higher "output power."  I assume that the reflected power throws off the measurement.  Does anyone know what the maximum SWR is that will still provide a fairly accurate power reading?  

Thanks and 73,
Paul - N8XMS