Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!wuarchive!psuvax1!psuvm!pz2
From: PZ2@psuvm.psu.edu (David L. Phillips)
Newsgroups: comp.sys.laptops
Subject: Re: Using laptops on airplanes
Message-ID: <90334.083553PZ2@psuvm.psu.edu>
Date: 30 Nov 90 13:35:53 GMT
References: <160670@kean.ucs.mun.ca> <2236@abcom.ATT.COM>
 <17827@hydra.gatech.EDU> <1990Nov29.225555.18236@batcomputer.tn.cornell.edu>
Organization: Penn State University
Lines: 13

In article <1990Nov29.225555.18236@batcomputer.tn.cornell.edu>,
pwong@batcomputer.tn.cornell.edu (Patrick Wong) says:
>
>Last time when I flew USAir, the taped announcement said that computers
>cannot be used only during takeoff and landing.  There is no mention that
>computers cannot be used during cruising.  The funny thing is that the
>announcement said no other electronic devices are allowed at all time.
>
You can also use tape players but not radios.  The problem comes from the
IF (intermediate frequency) radiation used in radios and TV sets to modulate
the RF (radio frequencies) pulled in from the "ether."  Tape players and
computers do NOT generate those frequencies, or any significant radiation, for
that matter.