Mike,

Does MMTTY know to use the Signal Link sound card?  There is a sound 
card tab under the setup mmtty dropdown menu.  Read the mmtty help file 
on soundcard selection.

I may have misunderstood your first post yesterday,  I thought you said 
you were getting some clear english text and were just having trouble 
fine tuning the station.

If you are on a clear freq with no RTTY tones and are getting a steady 
stream of garbage , you are either overloading the sound card, or hum or 
hash  is confusing the decoder.

If the Signal Link is connected via some sort of data jack, there should 
be a menu to limit audio output from the rig.  If connected via a 
speaker or headphone jack, back down the volume.

Try setting the Signal Link input control to mid point (about 12 
o'clock),  then reduce the audio output from the radio until the garbage 
stops, then look for a rtty signal.

If you reduce the audio output from the radio all the way, and the 
garbage is still there, then maybe some hum is getting from the pc.

All of this assumes that  the software knows what sound card to use.


As Steve just suggested, setting to RTTY or FSK mode on the rig can help 
in getting rx set up, but since you plan to transmit in AFSK, you will 
sooner or later need to  get rx working in SSB.

73, Steve KW3A