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[TenTec] Looking for keyer (?) schematics

To: tentec@contesting.com
Subject: [TenTec] Looking for keyer (?) schematics
From: Jon Iza <jon.iza@gmail.com>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Tue, 2 Apr 2019 12:06:57 +0200
List-post: <mailto:tentec@contesting.com>
Folks,
I have three boards with no clues of origin or schematics.
Two of them have a reed relay, 8 transistors, 3x 7400, 1x 7410 and 1x
7476, coded 90461.
The third one has 9 transistors and one UA747, coded 90406
I also got a couple of KR50 mechanisms, so it will be nice to know how
to drive the magnets to adjust the force.
Any hints welcome!
jon, ea2sn / ae2sn
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