Guys, this reflector is intended for antenna modelers, not antenna
builders. You're much more likely to get good response from the group on
towertalk@contesting.com which, despite its name, is for towers, antennas,
feed systems, connectors, coax, tuners, anything to do with actual amateur
radio antennas. Towertalk has been going for at least a decade, and the
archive is searchable by keywords, making it unnecessary in many cases to
reinvent the wheel.
73, Pete N4ZR
At 08:24 PM 2/17/2009, aa4nn wrote:
>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
> > _______________________________________________
> > Antennaware mailing list
> > Antennaware@contesting.com
> > http://lists.contesting.com/mailman/listinfo/antennaware
>
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