On 12/7/2023 10:40 AM, K9AY wrote:
Had no problem, but I think the Inv-L was at least partly detuned during
receive by the T/R switch open circuit and length of coax.
This is an important factor that we don't often think about. I've used
this to create 2-el arrays from multiple 160M
I believe that it greatly depends on if the tower is closely resonant to 160
meters. In my case, the K9AY array is about 150 ft. from the tower. I
tried detuning my tower and even though the tower is shunt fed with an Omega
network, it made no difference. Yet at K9UWA and KD9SV and others, it
Ash,
The answer is "as far as necessary"! There seems to be a lot of variation in
the degree of interaction with towers and other antennas. Every QTH is
different.
I suppose 100 feet is a good starting distance. The minimum I've installed the
loops at my own QTH is 75 ft from an Inv-L. Had
I don't want to say "No Impact" but my K9AY is in a line of trees and has
very strong directivity with deep null.
It is about 50 feet from the vertical element of my transmit T, and
definitely in the shadow (80 feet below) of the top element of the transmit
T.
I can ground, unhook, etc. the
Well, on a small suburban lot with TALL pine trees (four and a large sweet gum
tree in a square of 50 x60 feet), I had an inverted L with one L shaped
elevated radial on the perimeter of the lot. One leg of the K9AY loop was about
6' away from the elevated radial. On receive I switched in an
Greetings Ringmasters, Trapeze Artists, Elephant Handlers, Strongmen, Clowns
and respected Others of the 160M Realm,
The Stew Perry Top Band Distance Challenge is afoot. It commences 1500Z
Dec. 30, 2023 and ends 24 hours later. This contest is all
Hi All,
How far should a K9AY be spaced from resonant antenna? I presume there is
no impact from nearby trees.
Please advise.
--
Ash ~ 3V8SS/KF5EYY
http://www.kf5eyy.info/
_
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