[Orion] Strange problem? PSK31` PTT

[Richard Hemingway]

I have run into a strange problem.  I received my Orion about 5 days 
ago and from time to time I have been running PSK31 on it using the 
SignaLink SL-1+ interface and both the MultiMode and DarwinPsk 
software.  Receive is fine and I can run both software on RX on three 
different stations.  Also TX has been working well.

My problem, today, has to do with TX . I key in a message, in either 
program, and hit TX and can hear the sending of the message from the 
computer headphones and the PTT lights up on the SignLink.  However, 
it is not keying the Orion!!  Two days ago it was and I have not 
tried to use it on PSK since.  Both my key on CW and the Mic of SSB 
work just fine and key the transmitter.

The cable goes from the SignaLink to the Orion via a 5 pin DIN 
plugged into the AUX I/O jack and the gain is set at 4.  I tried to 
increase the gain, but nothing changed.

I imagine t hat I am doing something dumb but haven't been able to 
figure it out.

Dick, N5XRD