From My experience with 3 different sets of 160M coaxial
inverted Ls, I found that in general the higher the
vertical component, the better the antenna will perform
for dx.
My first and 3rd sets (I used a pair phased most of the
time) with the vertical component approximately 70 to 80
feet performed superbly.
The second set (a single antenna) going up only 40 to 50
feet performed, but definitely not as well as one at 80
feet. But I still make contacts up to 3500 miles!
Whatever you have for skyhooks (I used trees) go for it
and remember to have as many radials as practical and do
not worry if you have to bend the radials to go around
property lines or buildings.
--73 Bruce, WA3AFS
>
>
>
>------------------------------
>
>Message: 2
>Date: Sun, 22 Jul 2007 08:41:15 -0700 (PDT)
>From: "R. David Eagle" <kb8nnu@yahoo.com>
>Subject: [TowerTalk] 160 M Inverted L Questions....???
>To: Tower Talk List <towertalk@contesting.com>
>Message-ID: <27581.34121.qm@web51702.mail.re2.yahoo.com>
>Content-Type: text/plain; charset=us-ascii
>
>Howdy all...
>
> I am interested in putting up an Inverted L for 160
>and not sure which version would be best. I see in the
>antenna handbook they have one with the radials that uses
>a simple impedance match with a single cap and some that
>have elevated radials (elevated? oh no!). To maintain my
>young age and stress level, I will stay away from the
>elevated radials debate. Hi Hi! BUT...what I would
>really like to know is how critical the vertical
>component is in this antenna....?? Is there a huge
>difference in efficiency between 40 and 60 feet?
>
>Thanks,
>
>Dave
>KB8NNU
>
>
>
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