[K3] PSK D Center frequency

[Julian, G4ILO]

I just put my K3 into PSK D mode and adjusted the shift of the filter and it shows the center frequency as * FC 1.01 . Not 1.00 but 1.01! Running f/w 2.38/1.90.

[Stephen Prior]

Hi Julian

I don't use the mode myself so hadn't noticed, but I've just tried it and
it's the same with 2.46/1.92.

73 Stephen G4SJP


On 14/10/2008 20:49, "Julian, G4ILO" <[hidden email]> wrote:

>
>
> I just put my K3 into PSK D mode and adjusted the shift of the filter and it
> shows the center frequency as * FC 1.01 . Not 1.00 but 1.01! Running f/w
> 2.38/1.90.
>
> -----
> Julian, G4ILO. K2 #392  K3 #222.
> http://www.g4ilo.com/ G4ILO's Shack   http://www.ham-directory.com/ Ham
> Directory    http://www.g4ilo.com/kcomm.html KComm for Elecraft K2 and K3

_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft   

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Greg - AB7R]

That's correct.  It was done intentionally.

-------------------------
73,
Greg - AB7R
Whidbey Island WA
NA-065


On Tue Oct 14 12:49 , "Julian, G4ILO"  sent:

>
>I just put my K3 into PSK D mode and adjusted the shift of the filter and it
>shows the center frequency as * FC 1.01 . Not 1.00 but 1.01! Running f/w
>2.38/1.90.
>
>-----
>Julian, G4ILO. K2 #392  K3 #222.
>http://www.g4ilo.com/ G4ILO's Shack   http://www.ham-directory.com/ Ham
>Directory    http://www.g4ilo.com/kcomm.html KComm for Elecraft K2 and K3
>--
>View this message in context: http://n2.nabble.com/-K3--PSK-D-Center-frequency-

tp1333997p1333997.html

>Sent from the Elecraft mailing list archive at Nabble.com.
>
>_______________________________________________
>Elecraft mailing list
>Post to: [hidden email]
>You must be a subscriber to post to the list.
>Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft   
>
>Help: http://mailman.qth.net/subscribers.htm
>Elecraft web page: http://www.elecraft.com

_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Julian, G4ILO]

Greg - AB7R wrote

That's correct.  It was done intentionally.

If so, fine. But why?

[KK7P]

Hello Julian!

>> That's correct.  It was done intentionally.
>>
> If so, fine. But why?

The PSK decoder's "sweet spot" is closer to 1010 Hz than it is to 1000 Hz.

Your next question is probably," Well, why not move the sweet spot?"

The answer to that is quite lengthy.  Trust me, doing so is not trivial!
  Shifting the Tx tone 10 Hz to better match the decoder, on the other
hand, is trivial ;-)

73,

Lyle KK7P
_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft   

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com