[GreenKeys] TU replacement

[Hugh Pyle]

For linux, there's also minimodem (http://www.whence.com/minimodem/).  From
the man page (http://www.whence.com/minimodem/minimodem.1.html) it should
handle all the RTTY frequency shifts.  I don't know whether it can output
raw 5-level bits.

Haven't tried it myself, yet, but this is on my todo list...


On Wed, Aug 21, 2019 at 3:34 PM John, W9DDD <w9ddd at tapr.org> wrote:

> Yes I saw that one.  It's a shame that happened.  I guess he never made
> it public domain once he decided to pack it in.  (Perhaps disgusted
> enough to not do that?)
>
> I did run into https://www.ele.uva.es/~jesus/rtty/index.html which is
> simple enough to try and modify.  Unfortunately I haven't kept up my C
> programming skills.  Too bad PHP and HTML doesn't work for DSP.
>
> I don't see even a pirate copy on the internet. Wonder if you can run
> DOS on a Raspberry Pi?  A linux version of something would be my
> preference.
>
>
> John, W9DDD
> Ich habe dreimal abgeschnitten uns jetzt zu kurtz. (I cut it off 3 times
> and it's still too short.)
>
> On 8/21/2019 2:09 PM, Jim Haynes wrote:
> > On Wed, 21 Aug 2019, John, W9DDD wrote:
> >> I've been reading docs about MMTTY, fldigi etc.  As near as I can tell
> >> they all are oriented towards squirting characters on the screen. I
> >> don't see an option to drive an external printer either by bit banging
> >> a digital I/O port or a USB device like the volpe board.
> >>
> >> Is there an existing solution and I missed it or?
> >>
> > I don't think so.  I've been begging writers of the software to produce
> > a Baudot output on a wire when receiving, but so far have had no success.
> >
> > The now-ancient K6STI RITTY sofware did do that (at my request) but is no
> > longer available, more or less driven out by all the free software and
> > by the author's disgust at pirated copies.  And it was never updated to
> > run on anything but DOS and anything but a Soundblaster card.  I have an
> > old DOS machine that can still run it.
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