Path: utzoo!hoptoad!amdcad!amdahl!cit-vax!elroy!jplpub1!jbrown
From: jbrown@jplpub1.jpl.nasa.gov (Jordan Brown)
Newsgroups: alt.flame
Subject: Re: Platygaeanism
Keywords: platygaeanism, am & fm
Message-ID: <5204@elroy.Jpl.Nasa.Gov>
Date: 11 Jan 88 14:26:16 GMT
References: <27455COK@PSUVMA> <4249@bellcore.bellcore.com> <1359@quad1.quad.com> <9959@shemp.UCLA.EDU> <829@tahoe.unr.edu> <2534@killer.UUCP>
Sender: news@elroy.Jpl.Nasa.Gov
Reply-To: jbrown@jplpub1.UUCP (Jordan Brown)
Organization: Me?  Organized?
Lines: 15

In article <2534@killer.UUCP> allen@sulaco.UUCP (Allen Gwinn) writes:
>In article <829@tahoe.unr.edu> malc@tahoe.unr.edu.UUCP (Malcolm L. Carlock) writes:
>>Sorry Bret, but it's AM (lower frequency) transmissions that bounce off the
>>ionosphere, not FM.
>
>I'll have to remember that, Malcolm, the next time I use my aircraft
>radio (+- 110-130 MHz AM).  To think that I might have been cleared for
>takeoff by L.A. Tower when I was in Dallas makes me mighty nervous  :-)

Aircraft radios are FM.  Note that they fall ABOVE the FM band (which ends
at 108 MHz, where nav freqs begin).  When I tune my sloppy air-band radio
to the very low end of the air band, I get the station at the top end of
FM, so they use the same encoding scheme - FM.

AM, on the other hand, is down around 1000 KHz (1 MHz).