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From: W8SDZ%SIMTEL20@sri-unix.UUCP
Newsgroups: net.ham-radio
Subject: Teletype Synchronism question
Message-ID: <1193@sri-arpa.UUCP>
Date: Thu, 24-May-84 16:09:00 EDT
Article-I.D.: sri-arpa.1193
Posted: Thu May 24 16:09:00 1984
Date-Received: Fri, 1-Jun-84 04:30:57 EDT
Lines: 25

From:  Keith Petersen <W8SDZ@SIMTEL20>

From: Bill Johnston CD-SP <bjohnsto at wsmr70a>
To:   w8sdz
Re:   Synchronism

Keith,

Some years ago I saw a good explanation of how a teletype printer becomes
synchronized if the signal is turned on in the middle of a character.

That is, suppose you just happen to switch the signal on in the middle of
a character, and the first bit it sees is a spacing data character.  How
does it finally figure out that what it saw wasn't a start bit, and get
itself properly synchronized with the real start bit of subsequent
characters?

Do you recall such an article, or do you have a good description of the
process yourself?

Seems to me that I might even have included a description of it in one of
my articles in RTTY Journal about 10 or 12 years ago, but I can't find it,
and I can't recall my favorite description that I like to give to newcomers!

Thanks  --  Bill, N5KR