I have a number of Cushcraft 40's 1 40-2CD that was up for about 20
years on top of a 70ft tower in Colorado on top of a hill. I pinned the
elements and cap hats but it was in one piece when it came down last
year. They improved the survivability of the XM240 with some inserts
etc. I have one in Montana at 65 ft and one in Colorado at about 85
ft. Both are still up. Once again I pinned the elements and cap hats.
Still up and in good shape. The Montana version sits in the wind almost
constantly and has survived 80mph winds on a number of occasions. The
only regret I have on the Montana XM240 is that I did not ground the
reflector and when a T-storm approaches you can hear and sometimes see
the static discharging from the element tot he mounting bracket and it
creates a heck of a lot of noise on the radio!
The Montana stuff is being taken down and moved to Colorado this
summer. I will probably turn one of the 40's into a moxon.
Mike W0MU
W0MU-1 CC Cluster w0mu.net:23 or w0mu-1.dnsdynamic.com
Http://www.w0mu.com
On 5/25/2012 8:55 AM, GALE STEWARD wrote:
> I've have had very good luck with a reinforced Cushcraft 40-2CD. This antenna
> was reinforced as per the W6NL mods and has survived ice, heavy wet snow, and
> high winds. The newer model CC XM-240 can be strengthened in the same way.
>
> http://k7vc.com/402cd.html
>
>
> Mine is at 72ft so yours would see a bit weather related stress at 100ft.
>
> Also, if you want full length elements, ON4UN's 3 element 40M yagi looks very
> strong. With a bit of computer modeling, you could re-configure it as a 2
> element antenna. John's elements& boom are very robust.
>
> GL with the project.
>
> 73, Stew K3ND
>
>
>
> ________________________________
> From: "lkeller73@roadrunner.com"<lkeller73@roadrunner.com>
> To: towertalk@contesting.com
> Sent: Thursday, May 24, 2012 9:51 AM
> Subject: [TowerTalk] 2 el 40m beams
>
> Hello out there.
>
> I'm at a loss as to what to replace a snow-damaged 2 el 40m beam with.
>
> Everything I've found on-line doesn't really call out how strong the antenna
> is.
>
> Ideally, since most "gain" figures would be nebulous anyway, I want the
> STRONGEST beam
> out there since it's going on Bertha at 100 feet.
>
> Any suggestions?
>
> Lonnie
> WA2AOG/W2RR
> _______________________________________________
>
>
>
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