[GreenKeys] An explanation needed

[Sam Hallas]

Jesse Hanchrow wrote:
>  I would like to get an explanation at a very elementary level of how
>  a printer synchronizes with incoming Baudot code.  I would like it to
>  include diagrams of the equipment involved. For example, I believe a
>  distributor is used:  if so,  how does it know when to start
>  rotating?

Jess,
I think you may be confused between the Baudot Mulptiplex system which 
is synchronous and uses a distributor and the later start-stop 
telegraphy which is asynchronous, is a simplex system (hence no 
distributor) and uses the International Telegraph Alphabet No 2. ITA 2 
is commonly called Baudot, but differs in a number of ways from Baudot's 
original code and Murray's subsequent code.

For some information on how the Baudot Multiplex worked look at:
http://www.samhallas.co.uk/repository/telegraph/b6_baudot_multiplex.pdf

There is an excellent article explaining how automatic telegraphy using 
5-unit codes works at:
http://www.rtty.com/England/fiveunits.htm

>  And I would like a diagram/s showing the mechanical linkage from the
>  electromagnets/solenoids controlled by the information pulses from
>  the distributor that somehow are connected to individual keys.

The actual mechanical decoding method varies from model to model. Did 
you have one in mind? I'm familiar with Creed machines myself, so if you 
want to know how a Teletype works another member of Greenkeys will be 
able to oblige.

Cheers,
Sam Hallas, G8EXV