[GreenKeys] A little Kleinschmidt help needed

[Bruce Gentry]

I am working on getting a radio hut with Collins URG equipment in it 
working. The TTY gear is all Kleinschmidt- a KSR, TD, and reperf. They 
all work but certainly need cleaning and oiling. The KSR, however, is 
sensitive to the polarity of the loop current. The selector magnets use 
a permanent magnet instead of a spring, so the wrong polarity will cause 
the printer to "run open" even with current flowing. Is there any setup 
or adjustmen that will allow the loop current to flow in either 
direction, like a model 15 or 28? Is there a selector magnet available 
using a spring instead of the magnet?

      Bruce Gentry, KA2IVY