Sender: <marv@lancaironline.net> (Marvin Kaye)
To: lml
Date: Sun, 25 Aug 2002 17:02:29 -0400
Message-ID: <redirect-1711519@logan.com>
From: "Angier M. Ames" <N2811A@attbi.com>
Reply-To: N2811A@attbi.com
Organization: Alpha Delta Research
MIME-Version: 1.0
Subject: Re: Comm Antenna
References: <3D684BCC.5EE8A8A3@attbi.com> <002601c24bf7$08308cc0$86d3b3d1@bobs>
Content-Type: text/plain; charset=us-ascii; x-mac-type="54455854"; x-mac-creator="4D4F5353"
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Hi Bob,

A couple of years ago I bought my comm, nav and transponder antennas from Bob
Archer. His designs must be different from a 'standard dipole' and apparently
no magic beeds are necessary. Here is a message I got back from him this
morning.

Thanks for your tail picture.

Angier

Robert Archer wrote:

> ----- Original Message -----
> From: Angier M. Ames <N2811A@attbi.com>
> To: <bobsantennas@earthlink.net>
> Sent: Saturday, August 24, 2002 8:15 PM
> Subject: Comm Antenna
>
> Hi Angier;
>
> Those ferrite beads are absolutely useless! When Jim Weir came out with that
> idea years ago I immediately went down to our RF lab and ran some tests and;
> nothing that I could detect with some very sensitive equipment. For people
> that are using standard dipoles I will supply drawings so they can fabricate
> a balun that really works but on my antennas a balun is not required because
> they are designed with a "Gamma" match feed which does not require one.
>
> If you have any further questions just let me know.
>
> Regards
>
> Bob
>
> > Hi Bob,
> >
> > I'm about to install your comm antenna in the vertical tail of my
> > Lancair 360.
> > I've followed your written instructions to the letter but some other
> > builders have suggested that I install some ferrite toroids on the coax
> > where it attaches to the antenna. I hadn't planned to do so. Just
> > thought I'd check with you before closing up the tail.
> >
> > All the best,
> >
> > Angier Ames
> >