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Re: [TowerTalk] Funniest thing I've seen in weeks

To: towertalk reflector <towertalk@contesting.com>
Subject: Re: [TowerTalk] Funniest thing I've seen in weeks
From: doc <kd4e@verizon.net>
Reply-to: kd4e@verizon.net
Date: Thu, 01 Jul 2004 17:44:19 -0400
List-post: <mailto:towertalk@contesting.com>
I should think that if you optimized the antenna, there wouldn't be a significant difference between feeding at the back or the front. Feeding in the middle is always going to be better. In fact, doing a quick optimization, I get F/B ratios within 0.5 dB and gains within 0.5dB for feeding either the front or the back element
73, ... Joe, K4IK

If I recall from a friend who was optimizing 6M beams he said that other than the initial gain/pattern value of the first reflector the second best value of the reflector was keeping signals "off the back" to a minimum. I think he added a second to optimize that effect and then added a couple of directors to end up with a very narrow focal point in his pattern.

I am guessing that no reflector and all directors would make for a
gain antenna with poor FB ratio.

I'd guess that all reflectors and no directors would have a broad
pattern off the front and severe restriction of signals off the back.

Are your software runs not showing that to be so?

73, doc kd4e
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