Xref: utzoo talk.religion.newage:1396 alt.flame:1207
Path: utzoo!utgpu!water!watmath!clyde!cbosgd!ihnp4!ihlpa!rjp1
From: rjp1@ihlpa.ATT.COM
Newsgroups: talk.religion.newage,alt.flame
Subject: Re: Platygaeanism
Summary: So, why is this in talk.religion.newage???
Keywords: platygaeanism, am & fm
Message-ID: <6776@ihlpa.ATT.COM>
Date: 8 Jan 88 16:50:31 GMT
References: <2534@killer.UUCP> <1414@quad1.quad.com>
Lines: 34

In article <1414@quad1.quad.com>, oleg@quad1.quad.com (Oleg Kiselev) writes:
>In article <2534@killer.UUCP> allen@sulaco.UUCP (Allen Gwinn) writes:
>>> ... 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  :-)
>>
>> And while I'm at it, I have decided to junk my 10 Meter FM amateur radio
>> transceiver since you have convinced me that FM signals don't bounce off
>> of the ionosphere (or ionoplane  :-) ).  
>
> Lest some other poor souls get confused by all this (I assume Allen knows
> wherefor he speaks, as seems to be indicated by the smilies):
> 
> AM and FM refer to the method of information "encoding" and transmission,
> rather than the frequency of the carrier wave. Unfortunately, for most people
> not well informed FM has become synonimous with 88-108 MHz carrier frequency.
> And the same way AM became sysnonimous with 530-1600 KHz. Which is rather sad,
> because AM and FM, although being preferred modulation methods at certain
> distinct frequency ranges, are not frequency specific.
> 
> So, in discussing ionosurface (;-) reflections of E&M waves, the frequency and
> not modulation methods should be kept in mind.  And yes, signals at 100+ MHz
> (AM or FM) will not bounce off the ionosphere, while 10 Meter (30 MHz?) very
> well may be reflected.
> -- 
> Oleg Kiselev  --  oleg@quad1.quad.com -- {...!psivax|seismo!gould}!quad1!oleg




SO, WHY IS THIS IN TALK.RELIGION.NEWAGE??????