Re: Antenna whip

[mikeiidc@domain.elided]

Amazement never ceases when Landry is around!  What does he have, a book on
obscure but impressive equations/theorems?  You are an amazing cornucopia of
knowledge, John Landry, and I dread the day I meet you, as I always like to be
the smartest guy in the room!  Of course, that explains why I spend so much
time in very small rooms with very few people!  The only time I am at an
advantage is when I am bartending and about 1:30 rolls around.  Then I'm a
genius!!!

Michael

John A. Landry wrote:

> In Linda Tripp's secret telephone recording, Monica and Howard R Pletcher
> <n9ads@domain.elided> were heard saying...
>
> >Yes, I think you are right.  I remembered an extra 10" in that 118" I
> >quoted.  Yes, you want it to be an exact 1/4 of the radio wavelength.
>
> Formula for calculating *1/4* wave antenna length:
>
> (468/Frequency)*6 = Antenna length in inches
>
> For example...
>
> CB Channel 1 = 26.965
>
>     (468/26.965)*6 = 104.13"
>
> CB Channel 20 = 27.205
>
>     (468/27.205)*6 = 103.22"
>
> CB Channel 40 = 27.405
>
>     (468/27.405)*6 = 102.46"
>
> So again, you can see that no one antenna length is exactly right for all
> frequencies.  This is why you normally split the difference in SWR error
> across the entire range of frequencies on a CB.
>
> John L.
> --------------------------------------------------------------------------
> jlandry AT halcyon DOT com      |
> Conservative Libertarian        |  Scout(R) the America others pass by
> Life Member of the NRA          | in the Scout Traveler escape-machine.
> WA Arms Collectors              |
> Commercial Helicopter - Inst.   | 1976 Scout II Traveler "Patriot" model
> http://www.halcyon.com/jlandry/ |     1977 Scout II Traveler (Parts)