[Elecraft] Upgraded K3 and MMTTY

[Don Wilhelm]

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 
one at a time - it sounds like you are trying to use both.

In addition, only one application can use a COM port at one time.
If you have DX4Win working on COM3, then MMTTY cannot also use that same 
port.
You must close DX4Win to allow MMTTY to use that port.
The alternative is to use a virtual port application (such as LP-Bridge) 
to connect to the K3 and then configure the various applications to 
connect to the virtual ports of LP-Bridge. COM-O-COM offers similar 
virtual port capability.

73,
Don W3FPR

On 8/19/2016 5:34 PM, Larry P. Greenberg wrote:
> 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
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