[Elecraft] K2 hollow sound and low power output

[Don Wilhelm]

Rick,

Did you record ALL your menu settings (including the filter settings) 
before you did the Master Reset, and have you restored all of those menu 
settings after the reset?

If the answer is NO, then you have some calibration and filter setting 
work ahead of you.
Go to my website www.w3fpr.com and take a look at the K2 Dial 
Calibration article - those are the steps you must follow.  But your 
situation is different than most, so before doing anything else, put the 
internal counter probe into TP2 and set the SSB FL1 filter to OP1 (it is 
currently at 2.20 which is the variable filter default) - then set the 
BFOs for LSB and USB FL1 to whatever frequencies produce the passband 
placement with the low frequency corner at approximately 300 Hz.  Once 
that is done, start with the K2 Dial Calibration instructions using WWV 
(or other standard frequency station) to properly adjust C22 on the 
Control Board.

After you get the filters and dial calibration correct, then we can talk 
about how to diagnose your other K2 ills.

73,
Don W3FPR

On 12/10/2011 7:56 PM, Rick Wheeler wrote:
> I have a K2 No. 2005 (owned and built since new) with the outboard ATU/100 watt setup. I rearranged my shack and have been fighting RFI. I believe it had to do with the routing of the power cables. I think (hope that is!) have fixed it. A bad Anderson connector (internally loose) on the 100 watt side may have contributed to the problem. BUT...
>
> Strange things did (I assumed were RFI caused) happen such as the radio keying up itself and when I attempted to tune the radio using the tune button it frequently would try to tune using high power (well over 20 watts).
>
> A couple of things have now happened. Power output is drastically reduced (10 maybe 20 watts) with a long hello or whistle AND the K2 now has a distinctively hollow sound (same with headphones too). The background noise on an empty frequency sounds as if it is coming from the end of a 10 foot tube. SSB reception is somewhat distorted too.
>
> I tried a factory reset (4,5,6 and power on) with no result.
>
> Regards,
>
> Rick
> K4LX
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