[Antennas] How to make an Air Coil (AKA Loaded Whip) 315MHz antenna

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Don wrote:
> Gary K9GS <garyk9gs at wi.rr.com> wrote:
>> Don wrote:
>>> Greetings,
>>>
>>> http://www.byvac.com/downloads/RLnn/How-to-make-a-Air-Cooled-433MHz-antenna.pdf
>>>
>>> shows how to make a 433MHz antenna that's a little over 70mm in length.
>>> 433MHz is typically used for radio controlled devices in Europe. While
>>> 315MHz is typically used for radio controlled devices in America.
>>> ?????? Very short and very simple whip antennas of this nature are not   ca.
>>> covered in my ARRL antenna books. The lengths also don't seem to jibe
>>> with fractional wave lengths. Does anyone have any ideas about scaling
>>> the 433MHz whip back to 315MHz? The more theory, the better.
>>
>> What is an "air cooled" antenna??
>
> Good question. "Air cooled" is new nomenclature for me too.
>    It looks like a plain old "loaded whip antenna" to me. But the guy
> who published the howto at the link calls it "Air Cooled."

On second thought, something may have been lost in translation beings
the howto was originally written in Dutch. "Air Coil" antenna seems 
like a better bet in retrospect.

73,

-- 
Don Kuenz, KB7RPU

Genius is nothing but a greater aptitude for patience. - de Buffon