K3 Firmware 2.10,1.81 problems

[A.K.Forrest]

Dear All.

operating a K3 with latest beta firmware, using PSK on data modes with
MixW. The frequency display on MixW now shows incorrect frequencies for
the signals received in data mode. On SSB frequencies displayed appear
correct. On data they appear about 3KHz low and on data reverse about
3KHz high. This tested on 20m band.  Everything OK before update.

Anyone else seeing this behaviour? or is it me that has the problem?

thanks

  73 Andrew M1KAZ



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[Julian, G4ILO]

A.K.Forrest wrote

Dear All.

operating a K3 with latest beta firmware, using PSK on data modes with
MixW. The frequency display on MixW now shows incorrect frequencies for
the signals received in data mode. On SSB frequencies displayed appear
correct. On data they appear about 3KHz low and on data reverse about
3KHz high. This tested on 20m band.  Everything OK before update.

Anyone else seeing this behaviour? or is it me that has the problem?

I don't normally use MixW any more but I just fired it up to check, and it seems OK to me. With the transceiver set to 14.072.000 MixW is showin exactly that in its frequency display window, and the waterfall is showing a chunk of band centered on 14071, which is correct assuming that the K3 uses LSB in data mode.

The K3 was erroneously reporting the data modes as reversed, and this was corrected in the latest firmware release. I suspect that this might have something to do with your problem, but since I can't see the problem myself I'm not sure what it is. Perhaps you used the options in the CAT setup screen to compensate for the previously incorrect frequency offset, and now need to take that settimg out. The CAT correction options are all 0 in my case.

[Joe Subich, W4TV-3]

I suspect this is an issue of MixW not correctly interpreting the
information received from the K3.  When in Data modes, the frequency
reported by the K3 will vary depending on which data sub mode is in
use.

Data      Default
sub-mode  sideband   Reported frequency

 FSK D      LSB      RTTY MARK
AFSK A      LSB      RTTY MARK
DATA A      USB      USB/LSB "CARRIER" frequency
 PSK D      USB      RF frequency (carrier +/- 1 KHz)

MixW assumes data modes from the K2 are LSB (there is no separate
K3 driver).  The firmware "error" prior to the new beta caused
MixW to get the sideband right for Data A by chance.  Mix W's K2
setting assumes that the CAT data represents VFO frequency (or
carrier) instead of 'MARK' as the K3 reports.  If you use FSK D
and AFSK A with a "standard"  2125 Hz Mark, set the Digi "Cat
correction" to -2125.  If you are using FSK D, set "FSK center
fq" to 2210 [(2125 + 2295)/2] ... if you are using AFSK A, check
"AFSK in place of FSK"

With Data A, I’m afraid that the author of MixW will need to  
create a new K3 driver that assumes USB operation in data modes.
Ideally, before then Wayne will have time to implement separate
"mode" get/set commands (on the list) for the digital submodes
(FSK D: MD6;/MD9;, AFSK A: MD8;/MDC;, and DATA A: MDA;/MDD;) so
MixW (and other digital software) can tell which mode is being
used from the IF; response.  Then when the authors of MixW (and
other software) do K3 specific support they will be able to
properly need to do a K3 setting to reflect carrier vs. RF and
sideband for each of the digital sub-modes.

73,

   ... Joe, W4TV
 

> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]] On Behalf Of Andrew Forrest
> Sent: Friday, June 27, 2008 6:31 AM
> To: [hidden email]
> Subject: [Elecraft] K3 Firmware 2.10,1.81 problems
>
>
> Dear All.
>
> operating a K3 with latest beta firmware, using PSK on data
> modes with MixW. The frequency display on MixW now shows
> incorrect frequencies for the signals received in data mode.
> On SSB frequencies displayed appear correct. On data they
> appear about 3KHz low and on data reverse about 3KHz high.
> This tested on 20m band.  Everything OK before update.
>
> Anyone else seeing this behaviour? or is it me that has the
> problem?
>
> thanks
>
>   73 Andrew M1KAZ
>
>
>
> _______________________________________________
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> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
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>
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