[Elecraft] K2: Sudden CW filter FLT2~FLT4 shift!!

[David Wilburn]

Just out of curiosity, if the ST P menu item was changed, to change 
the CW tone, would that cause a similar shift?  And by default that is 
tied to the PF2 key, and would not be terribly hard to bring up by 
mistake.  I know I have done it.


Dave Wilburn
K4DGW
K2/100 - S/N 5982


Don Wilhelm wrote:
> There is nothing in the K2 that would shift only CW filters FL2 thru FL4 
> other than a re-adjustment of those filters themselves.
> 
> Is it possible that something happened to the BFO that has changed *all* 
> the filters, but the change was not enough to make a noticeable 
> difference when listening to the wider filters?
> 
> A BFO frequency shift would shift all the filters by approximately the 
> same amount - look for the unsoldered connection in the BFO area.
> 
> 73,
> Don W3FPR
> 
> k6sdw wrote:
>> I thought it was just me...but chatting with another K2 owner whom
>> experienced the same event, about a month ago I turned on me K2 and
>> discovered all the CW filters Flt2 ~ Flt4 had shifted in relation to the
>> BFO, all by the same amount!! My 680hz center was now off...
>>
>> FLT1 and SSB had not shifted and was the same.
>>
>> I figured this may have been due to "aging" of a component? Anyone
>> experience this event? Any thoughts as to what may have occurred?
>>
>> I realigned FLT2~FLT4 and they have been very stable since......
>>
>> S/N: 3349 with all the latest mods including the Freq stability mod!
>> Firmware 2.03d
>>
>> Tnx much for your assistance!
>>
>> 73
>>   
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