[Elecraft] Elecraft] K3 Power calibration and current consumption

[Ken Kopp]

Hi Ken,
        
          Thank you for responding Wayne.

There isn't any "100 W calibration" on the K3. All gain calibration is 
done at 5 and 50 W (and optionally 1 mW if you have a KXV3). These are 
the points we picked do the cal, and the firmware then extrapolates 
from there. So, how accurate the rig is at any setting from 13 to 100 W 
depends on whether you've done the 50 W calibration.

There is one additional form of optional calibration: the K3's 
wattmeter. See CONFIG:WMTR in the owner's manual.
         
        This is the method I eventually discovered to make the K3's 
        wattmeter and the external reference wattmeter agree. The 
        "correction factor" is 074 for my K3.  It seems that this 
        adjustment would be part of the procedure on page 49.
        I stumbled on it "by accident", so to speak. (:-)

73! Ken - K0PP        


On Feb 26, 2009, at 7:42 AM, Ken Kopp wrote:

> I may well be the only one "caught" by this, but be sure that
> the TRANSMITTER GAIN procedure on pages 49 and 50
> of  the manual has been done, but also include the 100W level.
>
> IMO, the first paragraph under WATTMETER on page 49
> should read "... 5 W, 50 W , 100 W (K3/100 only) .... etc.