[GreenKeys] Model 15 Question

[Doug Alderdice]

Hello group,

Thanks to a list member I have received a set of gears to change my Model 
15 RO to 60 WPM operation.  I installed said gears this afternoon and 
connected it in a local loop with one of my Model 28 KSRs and typed some data.

The 15 RO works fine, but appears to have some "options" set that I haven't 
seen mentioned before and with next to no literature on hand for it, I 
don't know if this is, indeed, an "option" or if I have a problem.  I have 
only the RSGB Teleprinter Handbook, which briefly covers the Model 
15.  Specifically on my machine when a LTRS character is sent, the 15 RO 
shifts to FIGS.  FIGS, likewise, also shifts it into FIGS.  If it weren't 
for the USOS being engaged on the thing, it would never get out of 
FIGS.  From the list chatter generated by my original gear request, it 
appears that this machine was used with a LIT (line insulation test) system 
which would, as I understand it, spit out nothing but "port" numbers of the 
tested CO lines.  So, a machine set to always be in FIGS would make 
sense.  But, how do I undo it???  All the characters seem to print or 
function appropriately so I don't think I have a code bar hung up some place.

Also, when in the FIGS mode, just about any character other than numerals 
and a period prints not only the appropriate FIGS character, but the bell 
rings, too.  Is this another "option"??

Sorry for all the questions but 28s are more my realm of experience (I 
won't say 'expertise' since I make no expert knowledge claim on the 28) and 
I've never dealt with a 15 up close and personal before now.

Many thanks in advance,

Doug, KA2WFT

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