[GreenKeys] Part numbers for Model 15

[Jim Haynes]

On Thu, 10 Dec 2020, John Nagle wrote:
>
> M-177 Magnet Coil - 105 ohms
>
I had a Model 15 cover with a red decal on the copyholder that showed
cylindrical magnets, hence pulling magnet selector, but showed they
could be wired in series or parallel for 60 or 20 ma loop.  I don't
remember if the magnet numbers were shown, nor if the machine that was
under the cover happened to have those unusual magnets.

There was a book produced by Teletypewriters For The Deaf, about how
to hook up the various models of things that deaf people might have.
There was some mention of low-voltage high current selector coils that
might be found on some former Western Union machines.