[Elecraft] Upgraded K3 and MMTTY

[Larry P. Greenberg]

I recently upgraded my K3 with the new K103B that provides a USB connection, eliminates the need for an external PC soundcard and retains all of the original RS232 functionality.  I have an Edgeport USB to RS232 four port box providing RS232 connectivity to the K3, the amplifier, and rotator control.  It seems to be working as DX4Win controls the radio, the rotator, and sends CW.  I cannot get MMTTY to send RTTY or even execute the PTT function.  It seems like I have not set-up MMTTY correctly.  I am looking for someone who may be familiar with the new K3 Interface boards (K3s functionality) and MMTTY.  My error message is Cannot Open COM3 (COM port used to control the K3 and send CW which works fine.  I cannot select additional soundcards such as CODEC from the soundcard menu under set-up.  

Larry, WA9MAG