[Dx4win] MMTTY finally working with DX4Win

[Larry Alkoff]

There has been a lot of discussion about the use of MMTTY with DX4Win

After reading the discussions and thinking about it I've found an easy way to do it.
My rig is a Yaesu Mark V with Rigblaster.

The discussions focused on two methods:
Either using a second computer and sending RS232 to the Packet port on DX4Win
with a null modem or using Windows XP and some special software.
The first is cumbersome and for the second - I stay far away from XP and use Windows 98SE
when I have to use Windows at all.

What I did was plug in a new USB to RS-232 converter to give a new port
and make an interface with 1 transistor
and a resistor that plugs into the PTT connector on my Rigblaster with a Y-connector.  
It could alternatively simply plug into any place on the PTT line.
The interface is described in the MMTTY help file - it all fits in a 9 pin RS-232 plastic hood
that plugs into the USB converter and out to an RCA plug.

With this method either DX4Win or MMTTY can key the PTT line without interference
because they are on totally separate ports.

My new setup is:
CW send:		com1	DTR	This is a standard serial port
TNC:		com2	9600 baud  Another standard serial port
Yaesu rig control:	com3	USB adaptor
RTTY PTT	com4	USB adaptor using RTS

The only thing that seems to be lacking is my log will show a USB contact
which I have to manually change to RTTY after I enter the qso.

It _may_ be possible to operate RTTY in Yaesu RTTY mode but for tonight
RTTY is possible without using my KAM did not tune in sigs very well or easily.

A better solution would be to get an interface for MMTTY soon in DX4Win
like Writelog does but for now I'm all set.

Hope this info helps someone else.

73, Larry Alkoff N2LA



Larry Alkoff N2LA - Austin TX