I know this thread is about a simple QRP project for beginners, but the NUE-PSK
does support RTTY as well as PSK31. You could backback with an 817 and the
modem, though they are nearing completion on an SDR board that apparently could
be fit into the NUE-PSK enclosure. Not much to haul around.
Jim - K6JM
----- Original Message -----
From: vsmith269
To: digitalradio@yahoogroups.com
Sent: Thursday, August 05, 2010 6:55 AM
Subject: [digitalradio] Re: Direct RTTY Generation
Interesting idea with enough design challenges to make it fun. Have you given
any thought to the RX end - decoding the received RTTY?
I would love to see (and use) a system like this. Backpacking with an RTTY
setup would be neat.
--- In digitalradio@yahoogroups.com, "Simon HB9DRV" <simon.br...@...> wrote:
>
> How will you get the shift correct? Doesn't have to be too exact but does
> have to be +/- 25% or so.
>
> I was thinking about this while walking the dog - for a simple solution a
> SoftRock v6.3 would maybe a simpler / better hardware solution but you'll
> need more presky software :)
>
> Simon Brown, HB9DRV
> http://sdr-radio.com
>
> > -----Original Message-----
> > From: digitalradio@yahoogroups.com
> >
> >
> > A simple QRP Tx suitable for beginners, for example, is usually the
> > ubiquitous 1 Watt 40m thing for CW that all the magazines and book
> > seem include ad-ad-naueam, built into sweet tins or whatever novel box
> > they can think of. I want to be different, and publish a design for
> > RTTY. A simple varicap across a crystal, needing a bit of applied
> > science with SSB Rx and Spectrogram prog to set the shift - all part of
> > the basic learning process.
> >
> > But to do that needs a way of driving the Tx with a wire that just
> > waggles 1/0 with RTTY data - just like the mechanical teleprinters of
> > old. So long as it does it at 45 or 50 baud and is properly timed
> > (perhaps not so easy using Windoze - could this be why there's nothing
> > out there?)
> >
> > I wanted to steer away from a design that linearly upconverted from a
> > soundcard then filtered and amplified the result. The request was
> > for "simple designs for beginners"
> >
