[GreenKeys] A little Kleinschmidt help needed

[Dave Wade]

Pretty sure you could just put a small bridge rectifier on the end of the
line. I think even 1N4003/4/5/6/7 would switch quickly enough...

Dave
G4UGM

> -----Original Message-----
> From: greenkeys-bounces at mailman.qth.net [mailto:greenkeys-
> bounces at mailman.qth.net] On Behalf Of Steve Garrison
> Sent: 22 November 2017 10:44
> To: Bruce Gentry <ka2ivy at verizon.net>
> Cc: GreenKeys at mailman.qth.net
> Subject: Re: [GreenKeys] A little Kleinschmidt help needed
> 
> Not to my knowledge Bruce.  But it is pretty simple to get hooked up
right.
> I've done it thousands of times.  If it runs open when it should be
running
> closed just reverse the signal lines.  Then make a note of which terminal
has
> which color wire.  If you lose the note or the wires are both the same
color,
> as they were on a spool of field wire, you only have to try two ways.  So
you
> have a 50/50 chance of being right the first time.
> 
> Steve G./N4TTY
> Sent from my iPhone
> 
> > On Nov 21, 2017, at 11:52 PM, Bruce Gentry <ka2ivy at verizon.net> wrote:
> >
> > 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
> >
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