[Elecraft] A K2 with a short-term memory problem

[Don Wilhelm]

Ted,

Try 'counting to ten' before powering down.
If you move the VFO just before powering down, the VFO frequency may not 
have been written to EEPROM yet, the process is not immediate.

73,
Don W3FPR

On 6/27/2021 5:21 PM, edauer at aya.yale.edu wrote:
> I just finished debugging a K2 I built this past Spring and, with guidance
> from Gus, KB0YH, it was in shape just in time to try it out in the FD.  FB
> so far.  Except for one annoying problem.
>
>   
>
> When the rig is powered down it is supposed to remember the last frequency
> it was on.  The EPROM, I believe, is supposed to be continuously updated as
> the VFO is moved.  Well, this one doesn't do that.  When the rig is shut
> down and powered up it opens to the right band, and mode, and filter
> selection; but the frequency isn't the last one used.  It's sort of random -
> sometimes a frequency used two or three repoweringups ago; sometimes a spot,
> although in the band, that I don't even recognize.  (Or maybe it's I who
> can't remember where he was recently . . .?)
>
>   
>
> I haven't explored all of the other supposedly nonvolatile settings, like
> the filter shaping, monitor settings, linearization and other parameters.  I
> have built and operated a handful of K2s over the years, and have never seen
> this behavior, or not that I ever noticed.  I thought I'd ask here if anyone
> has seen this sort of thing, or if there are some particular investigations
> I can make that would be of diagnostic value.
>
>   
>
> Thanks for whatever counsel might be offered . . .
>
>   
>
> Ted, KN1CBR
>
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