[Elecraft] RTTY using DATA mode on K3

[Gary Hinson]

Something that caught me out once or twice is that the PC's audio output should be close to the K3's
tone settings on RTTy (can't remember if this is DATA or AFSK modes - possibly both).  With MMTTY,
it's possible to net the TX tones to the RX tones anywhere on the watefall, but if the TX tones are
way off the rig's expected tone frequencies, they are filtered away.  [This is even without any TX
equalization.] 

73
Gary  ZL2iFB


> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net 
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Bill 
> VanAlstyne W5WVO
> Sent: Monday, 19 April 2010 6:28 AM
> To: Derek Cohn/WB0TUA; elecraft at mailman.qth.net
> Subject: Re: [Elecraft] RTTY using DATA mode on K3
> 
> Hi Derek,
> 
> When using a computer and sound card to drive the K3 in any 
> digital mode, 
> your data mode should be set to DATA A. Somebody will correct 
> me if I'm 
> wrong, but I suspect that's your problem.
> 
> DATA A mode is basically equivalent to the USB/LSB position, 
> except that 
> equalization and compression are disabled.
> 
> Bill W5VWO
> 
> 
> --------------------------------------------------
> From: "Derek Cohn/WB0TUA" <vibroplex at mindspring.com>
> Sent: Sunday, April 18, 2010 9:53 AM
> To: <elecraft at mailman.qth.net>
> Subject: [Elecraft] RTTY using DATA mode on K3
> 
> > Hi Everyone,
> >
> > I just bought a K3 a few weeks ago and have been using it 
> on CW.  It's 
> > time to play with it a bit on RTTY.  I'm using the 
> Tigetronics Signalink 
> > to interface the radio to my PC which is running MMTTY.  
> When I have the 
> > mode switch in the sideband position, copy on the laptop is 
> just fine and 
> > the signals display properly on the tuning aids in MMTTY.  
> I read the 
> > manual pages about better performance if the DATA mode is 
> selected.  I 
> > switched to the DATA mode and there is very little audio in 
> the speaker 
> > and no signals displayed on the tuning aids in MMTTY.  No 
> copy either.  I 
> > double-checked the data mode setting and it is AFSK-A which 
> I think is 
> > correct.  I must have a setting wrong somewhere.  I've gone 
> over the data 
> > section in the manual a few more times but don't see what 
> I'm doing wrong. 
> > Any ideas?
> >
> > Thanks and 73,
> >
> > Derek Cohn
> > Morse Telegraph Club - Alton Chapter
> > Office UD, Sine DJ
> > Amateur Radio Station - WBØTUA
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