[GreenKeys] low current keying - 28KTR

[Nick England]

In getting a 28KTR working, I replaced some stuff inside the code
generator - 4.7k ohm resistors in series with both mark and common
leads and then a 0.01 uf cap across the line.
The replacement shielded line from the code generator had an MS3101
military connector on it, but this definitely didn't look like a
factory or military change - the little circuit board that carried the
resistors inside the code generator box was a piece of bakelite cut
from some other terminal board to fit, and the clamp that held cable
shield was also homebrew. The LPR selector magnets had a similar
MS3101 military connector on a short length of  shielded cable.

I rewired both code generator and selector magnets back to the
original configuration, but I was wondering what this mod could be in
aid of. So, not military low-level which is bipolar +/-6v, because
only the marking contact was hooked up. And while it wasn't a
military, factory, or WE modification, I can't figure out who would
need to do such a thing. I'm puzzled (as usual). Any guesses?

Cheers..
Nick England K4NYW
www.navy-radio.com