Hi Tom (et al)
Always enjoy reading your posts.
My Delta loop as I recall is Vertically polarized. I fed it partway (I think
1/8WL(?)--been 9 years since I crawled into the thick trees and installed
it) along the bottom edge. It's really stuffed into the trees very well. At
100' away you really can't see it until winter time, and even then , just
the top of the triangle, as the leaves fall off the Maple tree. The bottom
1/2 is completely engulfed in thick fir trees. I always thought it kicked
butt. (compared to a R7000, dipole @ 35', G5RV, etc. etc.), but I can
honestly say I am truly amazed at this D40 @ 54'. It usually takes a LOT to
impress me when it comes to antennas.
I just got an actual "5/8" from Barcelona Lou (EA3JE)while running about
50w. He runs 4el monobander and untold gobs of RF and was 22-25dB over s9.
I guess it's true; big antennas up high are better than small ones down low
(some K1 sez that, not me, but I certainly agree)
Anyway, I "measured" the F/S ratio on the D40 as being "roughly" ("roughly"
being the key word here) 15dB
It works on 40m...1:1 @ 7.040MHz
Also works on 17M (with a minor massage from the tuner)
Loads on 30m but isn't too terribly great. (better than my Vee @ 30' though)
It'll also work on 52/53Mhz, but I am never than high in the band on 6m.
Been a great day! New rotor, new antenna. Happy Camper!
Oh, and the SWR and patterns seem (relatively) unaffected on any other
Michael, Coreen & Corey Smith
(VE9AA, VE9AAA & Baby-VE9)
271 Smith Rd
----- Original Message -----
Sent: Saturday, September 08, 2001 9:35 PM
Subject: Re: [TowerTalk] D40 really works!
> I'm not surprised. Getting a horizontal dipole
> up in the clear is always a good idea.
> OTOH, is your Delta Loop Horizontally or
> Vertically polarized? If it is horizontal, the
> effective height is less that half the average
> height. You may want to convert to vertical
> polarization for DX. Should be an interesting
> comparison. Let us know if you do so.
> Tom N4KG
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