[Elecraft] KPA500 SWR Calibration

[Bob McGraw K4TAX]

I need to null the SWR detector on my KPA500.   I've not found any 
adjustment procedure as such.   And from the schematic, there is none.

I do have a rather precise Bird 50.5 ohm dummy load.  I see SWR values 
higher than 1:1 on the LED display and also on the LCD display on higher 
frequency bands.   I've found that the PWR ADJ does affect not only the 
indicated power but the FAULT values as well.   I am suspect that the  
SWR error likewise affects the Fault actions.

Any thoughts?

73

Bob, K4TAX