[GreenKeys] A portable Baudot terminal

[Ralph Mowery]

----- Original Message ----- 
From: "Jim Haynes" <jhhaynes at earthlink.net>
To: "Ralph Mowery" <rmowery28146 at earthlink.net>
Cc: <greenkeys at mailman.qth.net>
Sent: Sunday, February 03, 2013 11:04 AM
Subject: Re: [GreenKeys] A portable Baudot terminal


> On Thu, 24 Jan 2013, Ralph Mowery wrote:
>
>> One thing you may want to do is look for a sound card program such as 
>> MMTTY. This will send the audio tones out to the speaker port of the 
>> laptop.  Then you can build a simple audio to loop converter.  This will 
>> not have to be a very good one as you will be driving pure audio tones 
>> out of the computer.
>>
> Well, sure; but the PC is capable of generating Baudot right out its own
> COM port.  It's just a matter of being able to do the right things in
> software.
>

I have used the MMTTY program to generate the audio tones, but from the help 
files it can also generate an output from the serial port.  Either way some 
sort of interface will be needed to drive most Baudot machines from a serial 
port.

For the users here that have not heard of the program, it might be something 
worth looking into.  Either for generating the audio tones or the output of 
the serial port.