[Elecraft] RTTY vs PSK for DATA A question K3

[Don Wilhelm]

Don,

Your problem may just be HRD/DM780.  I no longer use it, but I do recall 
it did not handle the K3 Data sub-modes correctly.

I would suggest using AFSK-A sub-mode for RTTY rather than DATA A.  It 
does default to LSB, allows use of the dual-tone filter, and indicates 
the mark frequency on the dial.

MMTTY will work just fine if you want something more simplistic than 
DM780 for RTTY.

73,
Don W3FPR

On 4/22/2012 7:59 AM, goldtr8 at charter.net wrote:
> Dear Group,
>
> RTTY is supposted to be LSB and PSK on USB.
>
> If you have the K3 in DATA A mode does it matter.  Once you tune into
> the signal and my system decodes I would suspect that I am fine.
>
>   From what my brain is telling me is that a RTTY signal that is posted
> if you are in DATA A and its in USB then all I need to do is turn lower
> in FRQ to find the signal and all shoud be good.
>
> What am I missing if anything with the RTTY.   Will it have a big effect
> on RX decode or TX to someone else.
>
> The reason that I am asking is I just realized the LSB issue yesterday
> and now I am thinking that may be part of my problem where I have poor
> RTTY decode and ability to make weak contacts.    Other digital modes
> like PSK and JT65 work just fine with the system.
>
> I am using the HRD suite of software with DM780 in case that matters.
>
> Otherwise everything works fine, so its more of an education issue for
> operator not a K3 problem.
>
> Cheers have a great weekend.
>