Topband: Monopole Radiation Patterns, takeoff angles etc

[ZR]

Try operating 160 and 10M mobile, you would be surprised at the daytime 
range even with low power into a 8' antenna on 160.

Carl
KM1H


----- Original Message ----- 
From: "Mike Waters" <mikewate at gmail.com>
To: "topband" <topband at contesting.com>
Sent: Monday, May 07, 2012 9:04 PM
Subject: Re: Topband: Monopole Radiation Patterns, takeoff angles etc


> I'm pretty sure this surface wave at ~0 degrees elevation is useful on 
> (and
> below) the AM broadcast band (especially the lower portion) and 160 
> meters.
>
> But what about at 3.5, 5, 7, 10, 14, 18, 21, 24, and 28 MHz? That's what
> I've been trying to figure out: exactly how useful is this radiation at
> zero degrees on the different ham bands?
>
> Based on my experiences --and what I've studied-- since 1976, I'm not sure
> that it is.
>
> 73, Mike
> www.w0btu.com
>
> On Sun, May 6, 2012 at 10:10 AM, Richard Fry <rfry at adams.net> wrote:
>
>> Note in the link below that the value of the surface wave at 1 km at an
>> elevation of 50 meters is about 110 uV/m ...
>> http://i62.photobucket.com/albums/h85/rfry-100/Space_Surface_Wave_Compare.gif
> _______________________________________________
> UR RST IS ... ... ..9 QSB QSB - hw? BK
>
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