[Antennas] Coaxial Sleeve Dipole

[George, W5YR]

Actually, the antenna described here is more commonly termed a "coaxial
dipole." One half of the radiating element is a tube or rod fed by the coax
center conductor while the other half is a length of tubing fed from the
coax braid but with the coax run up inside the tube to the feedpoint, as Jay
described.  These antennas were widely used after WW2 as I recall for local
communications on ten meters.

An "open sleeve dipole" or "sleeved dipole" is a different animal. Instead
of trying to describe it, let me just take the easy way out and refer you to
the 20th Edition of the ARRL Antenna Book  which describes the antenna in
detail. I believe that I have seen it described in older editions as well.
The antenna was invented in 1946, by the way. This feed method was used on
at least on HY-Gain Yagi beam.

73, George W5YR
Fairview, TX
w5yr at att.net
http://www.w5yr.com


.----- Original Message ----- 
From: "J. Coote" <TSCM at jps.net>
To: "DavidE Benedict" <iam at pmug.org>; <w8okn at charter.net>
Cc: <antennas at mailman.qth.net>
Sent: Wednesday, September 08, 2004 7:20 PM
Subject: RE: [Antennas] Coaxial Sleeve Dipole


> Companies like Kreco, DB Products, RFS-Celwave and others make these for
the
> commercial world,
> but the antennas usually include ham bands.  Imagine a groundpane antenna,
> droop the radials down until they are parallel the coax, now make the
> radials into a 1/4 wave sleeve that covers the coax cable.. It's a dipole,
> but fed like a groundplane.  Gain about equal to drooping-radial GP
> antennas.
> Jay
> W6CJ/AAR9QM
>
> -----Original Message-----
> From: antennas-bounces at mailman.qth.net
> [mailto:antennas-bounces at mailman.qth.net]On Behalf Of DavidE Benedict
> Sent: Wednesday, September 08, 2004 2:15 PM
> To: w8okn at charter.net
> Cc: antennas at mailman.qth.net
> Subject: Re: [Antennas] Coaxial Sleeve Dipole
>
>
> Hmmmm,...
> I'm curious,... what's a "sleeved" coaxial dipole?
>
> David B.
> w7dbh
>
>
> w8okn at charter.net,Internet writes:
> >I am looking for a description and/or photos of a 6 meter and perhaps, 10
> >meter, sleeved coaxial dipole.  Anyone have a website where this can be
> >found?  How about a QST article.  I am a member of the ARRL.
> >
> >I am not interested in a J-Pole design, I have plenty of those to study.
> >
> >Thanks in advance.
> >
> >- - -
> >
> >Your moderator for this list is:
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