[GreenKeys] Soundcard modem with heavy metal TTY?

[Duncan M. Brown]

Chris,

You can use the program "MMTTY" as a demodulator and output to the
computer's serial port; then you just need a level converter to drive your
TTY loop.  Don't know if you can use MMTTY as a FSK modulator.

73 & have fun,

Duncan
K2OEQ



> [Original Message]
> From: Chris Elmquist <chrise at pobox.com>
> To: Teletype Mailing List <greenkeys at mailman.qth.net>
> Date: 30-Sep-09 15:07:25
> Subject: [GreenKeys] Soundcard modem with heavy metal TTY?
>
> I don't follow the soundcard application space (particularly Windows
> or DOS apps) much but am curious if an application exists that uses the
> soundcard in a PC as the modem but has the serial data going in and out
> the serial port of that PC to and from your real TTY rather than using
> the PC's display+keyboard as a glass teletype.
>
> Does such an app exist?
>
> I think you can do a fairly decent modem with DSP techniques on a PC
> and soundcard but the Windows display and keyboard is a lousy substitute
> for a real teletype.
>
> Just curious...
>
> Chris N0JCF
>
> -- 
> Chris Elmquist
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