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From: gwyn@brl-tgr.ARPA (Doug Gwyn )
Newsgroups: net.physics
Subject: Re: freq. spectrum
Message-ID: <48@brl-tgr.ARPA>
Date: Sun, 21-Jul-85 00:49:53 EDT
Article-I.D.: brl-tgr.48
Posted: Sun Jul 21 00:49:53 1985
Date-Received: Mon, 22-Jul-85 04:18:36 EDT
References: <99@biomed.UUCP> <210@geowhiz.UUCP>
Organization: Ballistic Research Lab
Lines: 5

>   The military's project ELF (extremely low frequency) project in Clam Lake,
> Wisconsin broadcasts at 60 hz on huge (many miles long) antennas.

Hell, the whole country does this!  It's a real problem (known as
"cultural noise") in magnetotellurics.