[GreenKeys] Model 28 gears.

[George B. Hutchison]

Mr. Linger - - -

The first thing to determine is whether the Machine is is a 
Navy/Military Unit or  Bell System item.

Most Navy/Military units  operated with a 7.00 unit code as opposed 
to a 7.42 unit (Longer Stop Bit) of the Bell-System equipment.

This goes for the Tape Transmitter /Distributor as well.

Additionally, should the tape perforator be in actuality a typing or 
non-typing reperforator as opposed to a straight perforator, this 
will modify what gears you will need.

A reperforator on the keyboard is easily identifiable an that if it 
has a selector magnet assembly on the punch it is a reperforator.

Many of us have parts manuals standing by to assist with getting you 
the right part numbers.

I recommend you pull the motor pinion and the intermediate gear and 
see what numbers are stamped on them.. Likewise for the two gears on 
the transmitter distributor.

Those numbers will give excellent clues as to the character code 
length, as well as the speed your current set of gears is applicable 
to.

My book is open and waiting.

George - W7TTY