|To:||Robert Shohet <firstname.lastname@example.org>|
|Subject:||Re: [TowerTalk] Ground radials- the long and short of it - Anotherquestion|
|From:||Don Havlicek <email@example.com>|
|Date:||Fri, 22 Oct 2004 14:57:32 -0500|
Comments inserted below:|
Robert Shohet wrote:
With respect to the "radial field", how essential is it to have the radials evenly spaced in a full circle?
Not essential .. but makes the antenna pattern more uniform.
"Dramatically" is subjective. If you can get 40-50 radials down .. don't worry about "1/4-wave" in length .. just make them as long as you can. In fact, if you could make most of them longer than 1/4-wave, you can control the base impedance of your vertical more easily.
"Drastically" ... see comment about "Dramatically" above .. it's subjective. Will it work ... sure .. will the antenna pattern be unlike the 'handbook' patterns ... yes ... will you work DX ... that's up to your operating skills and whether or not you're adept!
Can any reduction in performance be meaningfully compensated for by putting down MORE radials in the remaining area?
My 80m vertical [soon to come down and move to Michigan!] is 60' of aluminum towering with 100 radials .. 60 are equally spaced at 6-degrees each .. and there are 4 more 'intensely placed' sections of 10 additional radials ... placed at 45-degrees [Europe], 140-degrees [Carib], 270-degrees [VK/ZL], and 340-degrees [JA-asia].
There are critics who say I wasted those 40 additional radials .. but the 163 countries worked in the first month of using the vertical [WITHOUT CONTESTING!] means something is working right!
Good luck! 73 Don N8DE
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions and ask for Sherman, W2FLA.
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