Topband: Modeling the proverbial "vertical on a beach"

[Tom W8JI]

That makes no sense at all. What are you trying to say?

----- Original Message ----- 
From: "Carl" <km1h at jeremy.mv.com>
To: "Tom W8JI" <w8ji at w8ji.com>; "'TopBand List'" <topband at 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 at w8ji.com>
> To: "'TopBand List'" <topband at 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
>> _________________
>> Topband Reflector Archives - http://www.contesting.com/_topband
>>
>>
>> -----
>> No virus found in this message.
>> Checked by AVG - www.avg.com
>> Version: 2014.0.4716 / Virus Database: 4007/8040 - Release Date: 08/15/14
>>
>
> _________________
> Topband Reflector Archives - http://www.contesting.com/_topband
>
>
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 2014.0.4745 / Virus Database: 4007/8040 - Release Date: 08/15/14
>