That makes no sense at all. What are you trying to say?
----- Original Message -----
From: "Carl" <km1h@jeremy.mv.com>
To: "Tom W8JI" <w8ji@w8ji.com>; "'TopBand List'" <topband@contesting.com>
Sent: Friday, August 15, 2014 12:39 PM
Subject: Re: Topband: Modeling the proverbial "vertical on a beach"
A 3CX15000B7 or similar makes up for a lot of things and especially to
those who always want to be on top in a pileup or contest.
Carl
KM1H
----- Original Message -----
From: "Tom W8JI" <w8ji@w8ji.com>
To: "'TopBand List'" <topband@contesting.com>
Sent: Friday, August 15, 2014 9:51 AM
Subject: Re: Topband: Modeling the proverbial "vertical on a beach"
For receiving, an absence of noise sources in the path is all the
difference in the world. As an example of this look at what N7JW and K7CA
did from the Utah desert area. Utah desert is like the anti-saltwater,
and they are located much further from Europe than the east coast with a
worse polar area path, yet they had outstanding results. Saltwater has
the same advantage, as do freshwater bodies, of a lack of noise sources
in what might be a desired direction.
For efficiency (which only affects transmitting), the advantage is
primarily concentrated at low angles and primarily affects vertically
polarized systems. The question then becomes one of wave angle and
polarization.
Then there is distance as a factor, and path loss related to the magnetic
poles, which are factors.
A good station has a combination of everything going for it, but there is
no magic and there certainly isn't any 10 dB or more involved just from
being near saltwater. A few dB here and there from multiple factors are
what make the difference. Move 25% or 50% closer, get rid of noise
sources in the path, increase vertical antenna performance at low angles
a few dB, and get away from going past the magnetic poles and it is a
winner. It isn't from magic, and it isn't all from the presence of
saltwater, and it is not 10-20 dB by any stretch of the imagination.
73 Tom
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