[GreenKeys] desktop LPR local loop?

[Jim Haynes]

Something I tried unsuccessfully to sell at Teletype was that every selector magnet should have a
low voltage transistor selector magnet driver with an input level something like RS-232, operated by
voltage rather than current.  Something I later did with some of my own machines was to have a
120V 60ma selector magnet driver on every selector magnet and again with some kind of voltage
rather than current input to the SMD.  At one time this was grid voltage for a vacuum tube SMD,
and later something like RS-232 with a transistor driver.  Doing this for myself turned out to be more
work than I was willing to put into it.

Jim W6JVE
----Original Message-----
From: W2HX <w2hx at w2hx.com>
Sent: Nov 23, 2022 5:01 PM
To: Greenkeys <greenkeys at mailman.qth.net>
Subject: [GreenKeys] desktop LPR local loop?






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