[Antennas] Re: "J" poles - Wait A Minute!

Sun, 14 Jul 2002 08:51:10 -0500

Hey Guys,

The word "dipole" means TWO poles - "di" equals TWO.

The word "monopole" means ONE pole - "mono" equals ONE.

Please don't confuse the two, especially when you're comparing feeding methods!

Please keep the terminology straight!  A half-wave long "monopole" (a continuous strip of wire or tubing)
Is NOT, repeat, NOT, a "dipole" !!  It's a half-wave long monopole and that's it.....  how you choose to
feed it is your question (problem).     

A half-wave length DIPOLE is another matter, along with the problems and supports of feeding it.

Get your terminology correct, PLEASE!

Thanks!

Karl K  - W8TIF
McKinney, Texas

-----Original Message-----
From:	Dan Richardson [SMTP:[email protected]]
Sent:	Sunday, July 14, 2002 8:38 AM
To:	[email protected]
Subject:	Re: [Antennas] Re: "J" poles

At 08:21 AM 7/14/2002 -0400, you wrote:
>de WB2CPN South Central Pennsylvania  2002.07.14
>
>Good Morning Dan,
>
>A dipole does not have to be fed in the middle.

I never said it did.

>If it's a 1/2 wave and
>the current travels from one end to the other, and the ends are of
>oposite polatity, and these's a current max in the middle, it's a dipole.

What you say here and some others have addressed is the current 
distribution on the antenna's element (I'm do not disagree with that 
analysis) , but you and the others have failed to address the antenna 
*system's* current  path. This means the complete path of the current to 
and from the generator (transmitter). In other words the loop current.

>Monopoles, which nature arhors, could be 1/4 wave antennas, but they are
>really Marconi.      73  Clete

And a dipole is a Hertz.

73,
Danny

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