[GreenKeys] Soviet Teletype

[drlegendre .]

So if it's a tri-mode system, Cyrillic, Latin and Figures, does each type
pallet have three symbols, or are there additional type bars?

How compatible is that with a standard ITA2 system ie. M15/M19?



On Thu, Dec 29, 2016 at 8:46 AM, Duncan Brown <duncanancy at earthlink.net>
wrote:

> The Cyrillic coding was done in a logical manner - by sound of the
> character (as much as possible). So 01010 types an "R" in Latin (11111)
> mode and a "P" in Cyrillic (00000) mode.  There are a couple of Cyrillic
> characters that must be typed in the Figures (11011) mode, but the mode
> switching is automatic (just like the top row numbers).
>
> Enclosed is a chart of the code (thanks to Henning)
>
> Have fun & Happy New Year,
>
> Duncan
> K2OEQ
>
>
> On 28-Dec-16 23:49, Christian Gauger-Cosgrove wrote:
>
>> On 28 December 2016 at 21:15, drlegendre . <drlegendre at gmail.com> wrote:
>>
>>> I'm trying to make sense of the keyboard. Most keys have dual (literal)
>>> Cyrillic and Latin character markings (for instance, 'Deh' and D, 'Hah'
>>> and
>>> H) but some have odd pairings, like 'Ekratkaya' + J or 'bl' (hard sign)
>>> + Y.
>>> And others like 'Sha' and 'Shcha' have their own individual keys.
>>>
>>> What's going on there?
>>>
>>> It looks to be the MTK-2 encoding:
>> <http://www.sensi.org/~alec/locale/other/mtk-2.html> My ability to
>> Russian is non-existent, but from what I can tell, letter shift works
>> as expected, figure shift also works pretty close to one's
>> expectations for ITA2 (not USTTY), though the bell character on FIGS J
>> has been replaced by ю ('yu'), and the national use characters (FIGS
>> F,G, and H) are also Cyrillic chracters. Where things get interesting
>> is that sending a NULL works as a third shift, putting the machine
>> into Cyrillic mode, where the keys now produce Cyrillic characters
>> instead of Latin. Though if you study the character set you'll notice
>> that the MTK-2 code only encodes 30 of the 33 standard Russian
>> Cyrillic characters, and thus it lacks: Ё ('yo'), Ч ('che'), and Ъ
>> ('myagkij znak').
>>
>> The keyboard itself is the standard Russian typewriter layout (which
>> corresponds to 'JCUKEN' for us who use the Latin alphabet
>> exclusively). Fun fact: That's the usual keyboard layout for Microsoft
>> Windows in Russian. The JCUKEN layout was also the one used in the
>> Elektronika UKNC computer:
>> <https://upload.wikimedia.org/wikipedia/commons/d/d3/UKNCkeyboard.png>
>>
>> Cheers,
>> Christian
>>
>
>
>
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