[GreenKeys] Model 20 Teletype available

[Duncan M. Brown]

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
>
> -----Original Message-----
> From: Don Robert House [mailto:Packard42 at gmail.com]
> Sent: Friday, January 09, 2009 10:56 PM
> To: Kevin King
> Cc: gfmurphy at earthlink.net; 'Greenkeys'
> Subject: Re: [GreenKeys] Model 20 Teletype available
>
> Many of the Model 20s were cobbled back into Model 15s by HAMs.
>
> It is rare to find a fully functional M20 these days.
>
> Don
>
>
> On 9 Jan 2009, at 9:42 PM, Kevin King wrote:
>
> I have that very same machine. I always thought it was a 15. Mine is in
> better shape then that one. I had mine at the radio station and now
> use it
> on my dovetron. So you say it is a 6 level box?
>
> -Kevin
>