[Elecraft] K2: Modulation on CW signal

[Don Wilhelm]

Calvin,

Do you have anything with a transformer within 2 feet of the K2?  If so, 
isolate the K2 by moving it away from everything and see if the ripple 
goes away.

If the problem disappears with the isolation, you can install the 
optional VCOSHLDKT which shields the VFO inductor.

73,
Don W3FPR

On 10/21/2012 11:04 PM, Calvin Jones wrote:
> Hello, First time posting to the list.
>
> Completed K2 #7239 today.  Made a contact with a station on cw, 10 watts, 7.1065 mhz.  He reported back that my CW signal had a very heavy ripple on the signal.
>
> I connected the output to a Oscilloscope and was able to see a ripple on the waveform when keying a solid carrier at a few watts.  Also listened to my signal on another receiver and could hear a very bad modulated CW tone.
>
> This is a barebones K2 with no options installed at this point.  Every measurement in the testing was all within specs and the alignment of the radio had no problems.  Power output on all bands was OK.
>
> Thanks for any help in correcting this problem.
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