[GreenKeys] Teletype Code Diagram source?

[Sam Hallas]

Richard Knoppow wrote:

> "It would be reasonable, I would think, to conclude that Freebody
> copied this table (which contains pretty standard information) from
> some other source, and that the literal image in Hobbs' paper comes
> from some source other than Freebody." - David Macmillan

I take David's and your point. The layout of the footnote is entirely 
different in Freebody.

> Look for the 5th edition of _Reference Data for Radio Engineers_  at
> the bottom of the General Engineering section.  The book has charts
> on P.844 and 845 showing both the codes and keyboard charts.

That's not really a help as it's a totally different layout. The server 
at tubebook.org is very slow!

I've written to the author referring to Freebody. To solve his problem 
I've redrawn the table from scratch and waived any copyright on it.

Incidentally there's quite a clear chart of ITA 2 in the RSGB 
Teleprinter Handbook 2nd Edition, by Hobb, Yeomanson & Gee (all sadly no 
longer with us).

<http://www.samhallas.co.uk/greenkeys/ITA_2.pdf>

Sam