Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!rutgers!bellcore!ka9q.bellcore.com!karn
From: karn@ka9q.bellcore.com (Phil Karn)
Newsgroups: comp.protocols.tcp-ip
Subject: Re:  human factors aspects of echo delay
Message-ID: <15965@bellcore.bellcore.com>
Date: 7 May 89 05:38:20 GMT
References: <8905041101.aa24075@huey.udel.edu>
Sender: news@bellcore.bellcore.com
Reply-To: karn@ka9q.bellcore.com (Phil Karn)
Organization: Secular Humanists for No-Code
Lines: 14

Dave,

Just to illustrate the amazing adaptability of the human brain, users of the
AMSAT Oscar-13 satellite routinely monitor their own signals coming back
from the satellite as they speak. The round trip delay is just about 1/4
second, the same as your tape-delay trick, since at apogee the satellite is
at about geostationary altitude.

It takes some getting used to (the first night AO-10's transponder switched
on was VERY amusing, to say the least) but it's surprising how quickly you
adapt. Just as I've gotten used to the echo delay over my SLIP line. Not
that I *prefer* it that way, of course...

Phil