[Antennas] The "Perfect" Dipole

[Ed]

Bob can that antenna work by feeding it with ladder line plus coax into a
tuner with a 4 to 1 balun?
ED  YEARY W4TEY
325 CUMBERLAND DRIVE
HARROGATE, TN. 37752-6942


----- Original Message -----
From: "Bob Wilder" <bwild@earthlink.net>
To: "Durwydd MacTara" <durwydd@hotmail.com>
Cc: <Antennas@mailman.qth.net>; <bwild@earthlink.net>
Sent: Tuesday, March 04, 2003 4:55 PM
Subject: Re: [Antennas] The "Perfect" Dipole


> At 09:08 PM 3/4/2003 +0000, Durwydd MacTara wrote:
>
> >In my quest for new antenna construction ideas I stumbled across Bob
> >Wilder's web site and a new project! A cheap, easily constructed, all
band
> >HF antenna! It is a folded Frannklin constructed solely of 450 ohm ladder
> >line. He feeds this beast through a 4:1 balun. My question is "why not
9:1?"
>
> A couple of comments...Why 4:1?  Well that is what I had on hand and it
> worked great.  I have
> used 9:1 long ago and did not see that much improvement over 4:1.  4:1 is
> easier to find and/or
> build, so why not go with the cheap if it works.
>
> The 40 meter version works great on 75 meters and takes up a lot less
room.
> When I say great, I mean
> I was able to work WAS on 75 and in some cases QRP-QRP as far as Alaska
> from Alabama.
>
>
> >My next question is this: He claims a lower radiation angle if the last
20
> >feet of each leg are "drooped" at 90 degrees. I am considering cutting
> >mine for 80 Meters, rather than his 40 Meter length (increased
bandwidth),
> >does this 20 feet still have an effect
>
> Have no mathematical proof, but only observation when being used that I
> could see better
> signals with the ends dropped so I had some vertical polarization.  As far
> as a 80 meter
> version, again I have no mathematical proof but I would guess it would
take
> 30-40 ft ends
> to be drooped to obtain the needed low angle
>
> Right at the moment I have my 450 Ohm Franklin down and am trying a
> full-wave 80 meter
> loop at 30 feet just to see how it works as an all band antenna.
>
>
> >  "Communications" is a People skill, the rest is technology.
> >             Durwydd MacTara
> >
> >
> >
> >
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> Bob Wilder, AF2HD/AFA2HD
> 6032 Idlemoore Court
> Theodore, AL 36582-4117
> 251-653-5274
> http://home.earthlink.net/~bwild
> Asst State MARS Director- Alabama
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