At 08:54 PM 12/16/2006, Trent and Lorraine wrote:
>
>Greetings all, Could anyone enlighten me ? : Is there any practical reason
>that free standing towers utilised in a gamma match configuration are not
>used for 4 squares ? Locally there are heaps of old free standing tv towers
>that are around the 50 ft mark
Nope. Especially for a narrow band application.
Probably just tradition and simplicity. In the pro world, matching
networks on each element are pretty common (if not standard).
>Trent VK4TI
>
>Trent Sampson
>[PO Box 1647 Toowoomba Qld 4350] VK4TI
>
>
>-----Original Message-----
>From: towertalk-bounces@contesting.com
>[mailto:towertalk-bounces@contesting.com] On Behalf Of john@kk9a.com
>Sent: Sunday, 17 December 2006 12:15 PM
>To: TOWERTALK@contesting.com
>Cc: David Robbins K1TTT; mike@mallardcove.com
>Subject: Re: [TowerTalk] 80m 4-square materials
>
>I don't know that Array Solutions still carries the 80m vertical. ZeroFive
>Antennas http://www.zerofive-antennas.com sells one that looks very
>similar to the Array Solutions freestanding vertical for $2200. I built a
>54' freestanding vertical at P40A for considerably less. For K1TTT's
>installation, I would consider using 3" diameter aluminum tubing guyed at
>two levels. The larger top sections will improve the bandwidth and I think
>it's a strong antenna than can be built for a reasonable price. I believe
>that K4JA built his 80m 9 circle vertical array this way.
>
>John KK9A
>
>
>To: <k1ttt
>Subject: Re: [TowerTalk] 80m 4-square materials
>From: "Mike Fatchett"
>Date: Sat, 16 Dec 2006 09:16:16 -0700
>List-post: <mailto:towertalk@contesting.com>
>
>I believe that Array Solutions also has full sized 80m verticals.
>
>
>David Robbins K1TTT pravi:
>
> >I am trying to decide what to use to build 4 new 80m verticals for a
> >4-square upgrade here. My criteria are:
> >1. full size 1/4 wave verticals, no top or base loading.
> >2. must be able to standup to new England winters at 2000' with ice and
> >wind 3. must be new material, I don't want to go scrounging for used
> >tower or pipe.
> >4. prefer only 1 guy level, but will do 2 if necessary.
> >5. prefer to stand up complete, but will climb to add top section(s) if
> >necessary, crane or truck access will be very hard to this spot.
> >6. prefer something that can be delivered to here, truck delivery is
> >not a problem, I don't want to have to haul long stuff myself.
> >
> >So, what might fit those criteria??
> >
> >
> >David Robbins K1TTT
> >e-mail: mailto:k1ttt@arrl.net
> >web: http://www.k1ttt.net
> >AR-Cluster node: 145.69MHz or telnet://dxc.k1ttt.net
> >
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