[Elecraft] K2 ATU Question

[Mark J. Dulcey]

K6TFZ@aol.com wrote:
> K2 without ATU puts out, for example, 5 watts on 40 meters into dummy load.
> Installed and aligned ATU. With 5 watts requested, I get about 3 watts out 
> into same dummy load and SWR shows close to  1:1. What am I missing?  TIA.  
> Jeff, K6TFZ

The metering-adjustment pots on your KAT2 are probably not set 
correctly. If you have a KAT2 installed, the K2 uses the metering output 
from the KAT2 to control its ALC instead of the less accurate on-board 
circuit. So if the power meter on the KAT2 is inaccurate, the output 
power of the radio will also be wrong.

What you need to do (as explained in the alignment instructions for the 
KAT2):
Connect the K2/KAT2 to an accurate external power meter and a dummy load.
Adjust the forward-power pot on the KAT2 so that the power reading from 
the K2 matches the reading from the external meter.
Adjust the reverse-power pot to the same rotational position that you 
just set the forward-power pot to.