[RTTY] N1MM and TS590S

[John GW4SKA]

Was hoping to try out a new TS590S in the JARTS with N1MM.

Connection is via USB cable only. I have been through all the set-up, have radio control and the radio switches to TX but no tones. MMTTY works fine stand-alone.
The problem is not lack of mark/space switching, there is no transmitted audio at all. It's not radio set-up, it's something in N1MM set-up somewhere .... 

Any ideas?

Cheers,

John GW4SKA