You can download a program that does all calculations for you, be it yagis,
dipoles, verticals or what..
Have a look at http://www.sm2cew.com/download.htm
You will find the VK3UM Site and Radiation Calculator version 5.1
(EMRCalc.exe) if you scroll down the page a bit.
The program does not need an install, just run the EXE-file.
When it comes up it is in VHF/UHF/SHF mode, click a small box marked "HF"
in the "Frequency" box to get the HF options and antennas.
Different radiation limits (standards for different countries) can be chosen.
At 23:56 2006-04-24 , Bill Tippett wrote:
>>Actually, what I'm trying to do is figure out the radiation pattern on
>>the ground. Why? I'm doing RF Exposure calculations and rather than
>>assume the worst case exposure on the ground based upon the gain of
>>the antenna, I'd like to know what the actual gain is below the
>>antenna on the ground. I'm assuming it will be considerably less.
>>For example, what is the gain of my antenna at a 45 degree angle in
>>front of my yagi, but on the ground?
> OK I understand now. Here is what I
>would use if I were you:
> 73, Bill W4ZV
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