Bill,
I heard you many times this winter on 40m and the signal was amazing, very
often much over s9, so I can assure you the 40m beam is working preety well,
despite it's 90 foot tower, not 120 ;-)
But I have also one question about stacking tribanders - did anyone here
tried a *wide spaced* tribander stack and could share some experience?
I'm preparing a new tower here and because of the the type of the tower (and
few other factors) I am considering 2 antennas wide spaced, not 3 antennas
spaced eg. 10m/30ft like most people do.
This is also because my 13/22m actual stack doesn't work at all on 20m.
I'am on a flat terrain here.
In this case, "wide spaced" means 2 tribanders with long booms @16/31 meters
( abt 45/90 ft) in vertical stacking. So, the spacing seems too wide for
28MHz (abt 1,5 wavelenght), and in fact modeling shows some high angle
lobes, but how about real life?
73's
Mac SP2XF / SN2M
----- Original Message -----
From: "Bill via CQ-Contest" <cq-contest@contesting.com>
To: <cq-contest@contesting.com>
Sent: Wednesday, April 25, 2018 11:20 PM
Subject: Re: [CQ-Contest] 4O3A Tower Height
I concur with ZM4T.
In KH6 we are limited to 90 foot towers. It really doesn't make much
difference on 20-10 meters. With the huge drop to NA, EU and JA anything
higher would not be very effective. How do I know? My bible (HFTA) tells
me so. Anyone not using this tool who lives on uneven ground is cheating
themselves from having the best signal possible.
On the other hand I wish I could get the 40 meter Yagi up to 120 since
this seems to be the sweet spot, but I can live with what I have.
Bill KH7XS/K4XS
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