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
> >