[Elecraft] Upgraded K3 and MMTTY

I want to take this opportunity to thank everyone who responded on and off the reflector regarding my dilemma with upgrading the I/O boards (KIO3BUPKT) in the K3 and MMTTY not recognizing the new, internal soundcard. I would like to especially thank Don, W3FPR for coming up with the final

Re: [Elecraft] Upgraded K3 and MMTTY

If you are using AFSK for RTTY and controlling PTT via a method such as rig control or VOX, Don's advice about only one COM port applies. The only COM port you need is for rig control, and the KIO3B simply allows you to replace whatever you used previously with a direct USB connection to the

Re: [Elecraft] Upgraded K3 and MMTTY

Larry, I think you are getting confused by the RS-232 connections and the KIO3B. First, there should be only one COM port connected to the K3 - whether that be the COM port assigned to the USB connection or the COM port assigned to your Edgeport USB to Serial Converter port. You can use only

[Elecraft] Upgraded K3 and MMTTY

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