[Elecraft] K2 power out

[Don Wilhelm]

John,

Assuming you have only the basic K2 - no KAT2, KAT100 or KPA100 
installed,  and you are operating into a good 50 ohm non-reactive dummy 
load (check it at frequency with an antenna analyzer - a simple 
resistance measurement will not be adequate) - then normally, the K2 
power display is quite accurate.  Since yours is apparently not, check 
all the factors above and then if still inaccurate, check R67, R68, D9, 
R69 and R66 on the K2 RF board.  Check for value and for good soldering.

The power display for the basic K2 depends highly on having a 
non-reactive 50 ohm load connected, since this is a simple diode 
detector circuit.

Given your stated observations, is there any chance that you 
interchanged R67 with R68?

73,
Don W3FPR

John wrote:
> I notice the power output from the K2 reads around 15 watts on the K2 
> meter but
> around 4 watts on a Bird 43 meter.
> Is it maybe the K2 meter is generous?  I have noted correct levels on 
> the Bird
> before.
> Thanks.
> John.
>  
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