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Re: [TowerTalk] Method of calculating phase delay variation

To: <K7LXC@aol.com>, <towertalk@contesting.com>, <k2cb@comcast.net>
Subject: Re: [TowerTalk] Method of calculating phase delay variation
From: "Patrick Greenlee" <patrick_g@windstream.net>
Date: Tue, 3 Sep 2013 10:39:59 -0500
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>

"Imagine your antennas canceling each other out."


Cancellation would not happen in all directions, just some "lobes." Unless of course there were special circumstances such as vertical antennas mounted one above the other and fed out of phase.

Patrick AF5CK


-----Original Message----- From: K7LXC@aol.com
Sent: Tuesday, September 03, 2013 10:28 AM
To: towertalk@contesting.com ; k2cb@comcast.net
Subject: Re: [TowerTalk] Method of calculating phase delay variation

Howdy --

   First, one of my ham rules is "Go with what  you've got" so I was glad
to see Gerald's, K5GW, comments on feeding both of  your antennas. Try it
and see what happens.

   OTOH the potential problems with out-of-phase  antennas can be
disastrous. Bob Heil's , K9EID, dramatic demonstration of out-of-phase speakers (another propagation device) will give you pause to maybe pursue more precise
phasing. (The sound disappears  when they are out of phase. Imagine your
antennas canceling each other  out.)

Cheers,
Steve      K7LXC
TOWER TECH

PS - I followed Bob's talk at the W9DXCC convention some years  ago and he
is a hard act to follow!

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