[RTTY] Subject: Early RTTY generation/decoding

[Louis Ciotti]

Thanks for all the input.  My initial run through some of the information
appears as if audio filter were used to obtain the mark/spack frequencies, ,
and the outputof these filters were converted to the characters.  Pretty
simple solution considering how complex may digital communication systems
are today.

On Fri, May 6, 2011 at 10:05 AM, Wa3frp <wa3frp at aol.com> wrote:

> A good source for technical info related to early (1950s to early 1970s)
> RTTY terminal units can be
> found on this page:
>
> http://www.rtty.com/development/tu/index.html
>
> Check out the TT/L and ST-6 Demodulators are both are fine examples of
> early RTTY gear.
>
> 73
> Russ WA3FRP
>
>
> Message: 3
> Date: Thu, 5 May 2011 12:57:21 -0400
> From: Louis Ciotti <lciotti1 at gmail.com>
> Subject: [RTTY] Early RTTY generation/decoding
> To: rtty at contesting.com
> Message-ID: <BANLkTims2dpCOwkwjviFw5xbbP1YgJeaLw at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Is there a source if information on building up a stand alone RTTY
> encoder/decoder with out the use of a rigs fsk or a sound card?
>
>
>