K3 data mode operation?

[Dave, G4AON]

I've been trying data with my K3 and find the "Data A" mode works OK for
RTTY (unfortunately with only basic passband filtering from the K3). I
was using audio from a sound card fed via the line in socket. When the
K3 is set for data mode "AFSK A" which implies RTTY mode with AFSK (and
gives improved dual passband filtering as shown by the filter display),
there is no transmit output for audio into the line socket - which
worked perfectly when set to "Data A". Under advanced operating features
(page 31 of the current manual) there is no mention of data
transmission, only reception....

There seems little interest in data via the RS232 lead, currently it
doesn't work properly on receive because of mixing frequency and other
"housekeeping" information with the received text.

I've not yet tried direct keying on mode "FSK D", this might work...

Any thoughts on data modes with the K3 in general, or have I just hit
features that are still to be implemented with data via RS232 and the
"AFSK A" mode?

73 Dave, G4AON
K3/100 #80



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[Greg - AB7R]

Dave,

For now, when using AFSK mode only use the 915 pitch setting.  If you do
that it will work fine.

Sorting the text from the serial port is on the list.

73
Greg
AB7R


-----Original Message-----
From: [hidden email]
[mailto:[hidden email]]On Behalf Of Dave G4AON
Sent: Saturday, December 22, 2007 8:50 AM
To: [hidden email]
Subject: [Elecraft] K3 data mode operation?


I've been trying data with my K3 and find the "Data A" mode works OK for
RTTY (unfortunately with only basic passband filtering from the K3). I
was using audio from a sound card fed via the line in socket. When the
K3 is set for data mode "AFSK A" which implies RTTY mode with AFSK (and
gives improved dual passband filtering as shown by the filter display),
there is no transmit output for audio into the line socket - which
worked perfectly when set to "Data A". Under advanced operating features
(page 31 of the current manual) there is no mention of data
transmission, only reception....

There seems little interest in data via the RS232 lead, currently it
doesn't work properly on receive because of mixing frequency and other
"housekeeping" information with the received text.

I've not yet tried direct keying on mode "FSK D", this might work...

Any thoughts on data modes with the K3 in general, or have I just hit
features that are still to be implemented with data via RS232 and the
"AFSK A" mode?

73 Dave, G4AON
K3/100 #80



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[rkayakr]

Dave
  These and several others are "know problems". Elecraft does not publish a list so we have to each stumble over them out ourselves. I try to keep a current tips and bug list in the "data mode" section of the K3 Wiki.
  If you set "PITCH" to 915 you can use AFSK but the Dual PB inhibits transmission, so you might as well use Data A mode.
  I have transmitted FSK D with KY command macros.

 Good luck
   Bob
     KD8CGH
       KX1, K2, K3