I once used a K8UR four square for 80m (vertical inverted V) with the
top at about 110 ft and it did work ... it was directional.
Unfortunately I wasn't able to compare it to a standard vertical four
square.
Doug
Banned from posting to un-moderated TowerTalk by Steve, K7LXC.
My goal to help clean the world of misinformation.
-----Original Message-----
From: antennaware-bounces@contesting.com
[mailto:antennaware-bounces@contesting.com] On Behalf Of aa4nn
Sent: February 17, 2009 7:24 PM
To: antennaware@contesting.com
Subject: Re: [Antennaware] 40m array
I meant to add that I experimented with 4 sloping dipoles off an 89 foot
tower and never could make the array work. This was for 80m dipoles and
I
tried many variations, including using the shortened dipoles with
loading
coils. Just could not get the proper separation.
de Joe, aa4nn
----- Original Message -----
From: "Tony Osman" <tony.osman@xplornet.com>
To: <antennaware@contesting.com>
Sent: Tuesday, February 17, 2009 7:43 PM
Subject: [Antennaware] 40m array
>I thought there might be some words of wisdom for me on this list....
>
> I am looking to build a 40m 4-square but currently I am looking at
> mortgaging the house to pay for aluminum - cant seem to find a scrap
> yard anywhere that has any - they are recycling as fast as they can
get
> the money for it....
>
> So, I have a 68ft vertical built from 3inch irrigation tubing. Could
I
> use this to suspend a K8UR type dipole array? I understand that to
get
> the best operation of this array, the coax feeding the dipoles should
> come away parallel to the ground. This means they would connect to
the
> vertical at about 25 feet or so off the ground. I would then bring
the
> coax down the vertical to the matching box at the base of the vertical
> (of course adjusting the coax lengths to provide correct current
forcing
> to each dipole).
>
> My question is - when using the vertical on 80m and 160m (it will have
a
> trap at the top of the vertical with top-loading wires for 160m) with
> approx 1KW, will there be any adverse effect on the dipole array or
the
> matching network - similarly would these have any effect on the
vertical
> for 80/160 operation?
>
> Thanks in advance for any information.
>
> Tony
> Ve3rz
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