[GreenKeys] FW: Re: Model 20 Teletype available

[Duncan M. Brown]

Found the 6-level TTS code at 
http://homepages.cwi.nl/~dik/english/codes/6tape.html

The code still uses LTRS/FIGS shift, but now it changes between upper &
lower cases. The first 5 bits are the same as ITA2. The 6th bit gives
access to numerals, punctuation and other special characters.

What was the timing of TTS? Is it the standard 22ms bits & 31ms stop for a
8.42 character??

--Duncan


>
> Don,
>
> I had assumed that the 6-level code was the same as the 5-level code
(ITA-2) with the addition of one bit for the other case.  So if you could
strip off  the "shift" bit, it could be copied on a 5-bit machine.
>
> Are you saying that it is a completly different code??  Where can I find
the details of the 6-bit code??
>
> (AWA Museum is bidding on the ebay item)
>
> Thanks,
>
> Duncan
>
>
> > [Original Message]
> > From: Don Robert House <Packard42 at gmail.com>
> > To: Kevin King <kc6ovd at comcast.net>
> > Cc: Greenkeys <greenkeys at mailman.qth.net>
> > Date: 09-Jan-09 23:15:00
> > Subject: Re: [GreenKeys] Model 20 Teletype available
> >
> > Kevin,
> >
> > That would be great except I am at a loss as to how you can feed it  
> > with a DOVETRON.
> > 6 level TTD code is different than 5 level ITA-2
> >
> > Don
> >
> >
> > On 9 Jan 2009, at 10:02 PM, Kevin King wrote:
> >
> > It is just as I took it out of service at the radio station. Now mine  
> > is a
> > UP and not AP but it is the same otherwise. I will look closer at it  
> > in the
> > morning to count the bell cranks
> >
> > -Kevin
> >
> >