[GreenKeys] Model 28 Keyboards

[AI2Q]

Thanks for this information Bob.

It looks like I'll have to add an OR or NOR gate to my logic circuit that
I'm deriving to drive my Model 28 and process the keyboard. I was going to
use an opto-coupler xstr for driving the selector magnets (and will retain
that) and put the keyboard in series for local print. Now I will return to
the drawing board and likely use an OR gate to derive local copy while
generating logic for FSKing my transmitter.

Vy 73, AI2Q, Alex in Kennebunk, Maine
http://users.adelphia.net/~alexmm/ai2q.htm

 .-.-.


-----Original Message-----
From: greenkeys-bounces at mailman.qth.net
[mailto:greenkeys-bounces at mailman.qth.net]On Behalf Of Bob Camp
Sent: Sunday, July 04, 2004 11:16 AM
To: Greenkeys maillist
Subject: [GreenKeys] Model 28 Keyboards


Hi

Well they made me pick up a little here and I found correction T-1 to
Navships 93788 Vol 1. It has the keyboard stuff in it. To more or less
quote:

Page 1-30 Keyboard LAK45ARE, LAK45BRW, LK51ARN : These keyboards have
gold plated contacts designed for 3 volt 70 *micro* amp non inductive
signaling. Maximum breaking power is 120 mili watts at 25 to 70 VDC.
An RFI filter is *not* included with these
contacts..........................