[Elecraft] K3 FIRMWARE UPDATE: MCU 1.87, DSP 1.69 (Finally!)

[Bob Cunnings]

I agree that auto-spot doesn't seem as reliable as in earlier
versions. When I inject a continuous tone,  it works fine, always
coming within a few Hz. For actual cw signals it now seems to be more
easily fooled, often tuning low - noticeably different to me, one who
uses the feature constantly. In previous versions I rarely needed to
press spot more than once, and repeated invocation of auto-spot
resulted in little change of frequency (a few Hz or so if the signal
was stable). Now, once tuned in, repeated pressing of spot often
results in the frequency jumping around some tens of Hz, rather than
the more repeatable performance in earlier versions.

I noticed it right away when operating cw today.

Bob NW8L

On Sun, May 4, 2008 at 4:49 PM, Joe Subich, W4TV <lists at microham-usa.com> wrote:
>
>
>  > >>    * AUTO-SPOT (SPOT with CWT ON) now works with both very
>  > >> weak and very strong signals.
>  > >
>  > > Auto-spot consistently tunes to a tone 50 Hz low (50 Hz below
>  > > the value set for pitch).
>  >
>  > I can't duplicate this. I tried various sidetone pitches and
>  > found that auto-spot got to within a few Hz every time. What
>  > sidetone pitch are you using? I suppose some kind of band noise
>  > could interfere with the operation of CWT as well.
>
>  I first noticed it with a CW pitch of 600 Hz.  The auto spot will
>  eventually "zero in" after three or four tries but my ear is more
>  accurate than the auto-spot.  It may be band noise or simply timing
>  out between CW characters because it is always accurate with a
>  continuous tone (e.g. XG-2).
>
>
>