[Elecraft] K2 No power on 12m

[Don Wilhelm]

Robert,

Is this a newly built K2 or has it worked before?
If newly built, it may just be the adjustment of the bandpass filter 
trimmers.
If it worked before, does 10 meters work and produce full power output?
If so, it may be an adjustment problem (or soldering problem) on C44 and 
C46, but if 10 meters does not also work normally, there is a problem 
with either the 10/12m bandpass filter or the 10/12m Low Pass Filter.

Is this a failure with a dummy load connected? or with an antenna - it 
could be antenna problems, try into a dummy load.

What measurement equipment do you have?  If you have the RF Probe (or an 
oscilloscope with a 10X probe), you can do some signal tracing to 
determine the failure point.

Do you have an external wattmeter that you can put between the K2 and 
the dummy load?

73,
Don W3FPR

On 11/15/2011 4:58 PM, Robert Clutson wrote:
> My K2 shows no bargraph deflection on 12m transmit.
> Checking on another receiver for radiation can hear the VFO with gain
> up, but no variation when power changed from 0.1 to 15w.
> All other bands OK, monitor receiver clearly shows change as K2 power
> control varied.
> Robert