[UK-CONTEST] Monobanders and height

[Clive GM3POI]

Callum,
    With all the work involved in doing either 
project you would be well advised to model the 
difference using the ARRL handbook software by Dean 
Straw (HFTA).
    You should input the main directions from the 
location of the proposed antenna and use say a 2el 
20m to represent the A3S and a 3el mono at the 
various heights. Dependant on the local ground slope 
you may get some surprising results.
    The only time surprises don't happen is when you 
have flat ground around the Station, because you need 
roughly twice the antenna height over  gentle sloping 
ground. 73 Clive GM3POI
----- Original Message ----- 
From: "Callum MØMCX" <callum at mccormick.uk.com>
To: <uk-contest at contesting.com>
Cc: "James Thresher" <James.Thresher at Jaama.co.uk>; 
"G4MKP" <terryburbidge at blueyonder.co.uk>
Sent: Sunday, May 02, 2010 12:07 PM
Subject: [UK-CONTEST] Monobanders and height


> Our team is trying to establish the likely 
> real-world difference on
> 20m band, in extreme field-day style contesting, 
> between an A3S at 60
> feet and a full-sized 3 element  monobander with 16 
> foot boom at 100
> feet.
>
> Does anyone have experience of these variables?
>
> Callum McCormick
> Via iPhone
> 07976 631881
> http://www.m0mcx.co.uk/
> http://www.barclayanderson.com/
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