-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Tue, 28 Oct 2003 16:18:57 -0500,
Rodney Myrvaagnes wrote:
On 28 Oct 2003 05:05:13 -0800, (Parallax)
wrote:


I never said I had good ideas. However, I realize that somehow you
better disconnect the connection when the VHF or radar is used. I
also forgot about impedance matching (my god, alzheimers, I taught an
engineering lab on impedance matching once). I really don't know how
a radar antenna works on small boats. If it is just a rotating dish,
it oughta work with the right transducer.


The kind with a dome has a printed-circuit board with an array of
little antenna elements with fixed phase relationship that produces
the beam and receives the echoes. The open ones are slotted wave
guides AFIK. I don't see how either would help a cell phone.


If they were the right freq, it would work, at least the antenna part.
Still have to deal with impedence issues.

The slotted wavguide type, are called "Alford" antenna's and they
basically act like an array of verticle dipoles. Except they are
horizontally polarized. The PCB looking ones, are microstrip patch
arrays.

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.3 (GNU/Linux)

iD8DBQE/n1Ghd90bcYOAWPYRAl2zAJ4qlPPEVjtuT9JC8Vvu49wI6E/ycgCfV7J4
F2dRPD5SOoPUGOU0TpBs5fY=
=vosS
-----END PGP SIGNATURE-----

--
Jim Richardson http://www.eskimo.com/~warlock
Think for yourselves and allow others the privilege to do the same.
- Voltare