[GreenKeys] Testing My Model 15 KSR

[Ralph Mowery]

----- Original Message ----- 
From: "John McClung" <john at johnmcclung.com>
To: <greenkeys at mailman.qth.net>
Sent: Monday, April 12, 2010 10:10 PM
Subject: [GreenKeys] Testing My Model 15 KSR


> After I get my Model 15 KSR all cleaned and lubricated but before I
> build the RS232 interface, can I test it by just connecting the selector
> magnet, keyboard, limiting resistor and power supply in series?
>
> Regulated +120VDC => 2K 10W resistor => keyboard => selector magnet =>
> -120VDC
>
> Does keyboard or selector magnet polarity matter?
>

I never payed any attention to the polarity while running a 60 ma circuit. 
It is possiable to get the actual selctor magnets out of phase so to speak. 
That makes them very weak and usually will not work.  You just change  the 
wires on one of the magnets.