[Elecraft] RTTY vs PSK for DATA A question K3

[goldtr8 at charter.net]

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.

Don

~73
Don
KD8NNU