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[TRLog] LPT band decoder/PTT/keying/footswitch/relaycontrol

Subject: [TRLog] LPT band decoder/PTT/keying/footswitch/relaycontrol
From: (
Date: Wed, 9 Dec 1998 12:00:17 -0700
I picked up a couple of nice A/B boxes with three 25 pin connectors
on them for cheap. I'm thinking of building all of the subject
interfaces into them. Does anyone have a schematic for a homebrew
LPT port band decoder? How about the use of optoisolators in all
of the subject functions? Thanks in advance.

Dave Hachadorian, K6LL
Yuma, AZ
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