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

[Don Wilhelm]

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
>