[GreenKeys] Odd problem with m28

[Jim Haynes]

On Sun, 17 Jan 2021, Nick England wrote:
> I’m not sure about ITTY, but so far most RTTY people have sent figs-S for
> apostrophe. All my Navy machines ring a bell on figs-S. 
> 
J bell is Western Union and I guess Telex.  S bell is us government,
Bell System, and TWX.  In my days of mechanical RTTY most people used
S bell and J apostrophe, but maybe that has changed by now.