Rohn 25G without guys, how high?
 

"Rick (W-A-one-R-K-T)" wrote in message
.. .

How high would you all feel comfortable about going with a Rohn 25G tower
without guys, with a 6-foot concrete base and a 2 meter / 440 gain
vertical antenna on top (e.g. Diamond X-700HNA)?


Probably not reccomended but a friend gave me one that had been up for 20
years that had an antenna package simliar(2m Ringo) to the one you mention
plus an HF tri-bander beam This antenna survived Hurricanne Hugo when
trees in the same yard didnt. Strange thing, we took the tribander down
first and the antenna swayed more after it was removed.

Jimmie

Rohn 25G without guys, how high?
 

On Sun, 8 Jul 2007 08:51:57 -0400, Jimmie D wrote:

Strange thing, we took the tribander down
first and the antenna swayed more after it was removed.
^^^^^^^
ITYM "tower"

Mass... Inertia... Mass moment of inertia...

Of course, if it ever starts swaying dramatically,
the same factors come into play.

Jonesy
--
Marvin L Jones | jonz | W3DHJ | linux
38.24N 104.55W | @ config.com | Jonesy | OS/2
*** Killfiling google posts: http://jonz.net/ng.htm

Rohn 25G without guys, how high?
 

"Allodoxaphobia" wrote in message
...
On Sun, 8 Jul 2007 08:51:57 -0400, Jimmie D wrote:

Strange thing, we took the tribander down
first and the antenna swayed more after it was removed.
^^^^^^^
ITYM "tower"

Mass... Inertia... Mass moment of inertia...

Of course, if it ever starts swaying dramatically,
the same factors come into play.

Jonesy
--
Marvin L Jones | jonz | W3DHJ | linux
38.24N 104.55W | @ config.com | Jonesy | OS/2
*** Killfiling google posts: http://jonz.net/ng.htm

Yes I meant "tower"

Rohn 25G without guys, how high?
 

Depending on how it is supported at the base and where it might be supported
somewhere in the middle - freestanding to 50 ft. Any other height needs to
be guyed!

"Jimmie D" wrote in message
...

"Allodoxaphobia" wrote in message
...
On Sun, 8 Jul 2007 08:51:57 -0400, Jimmie D wrote:

Strange thing, we took the tribander down
first and the antenna swayed more after it was removed.
^^^^^^^
ITYM "tower"

Mass... Inertia... Mass moment of inertia...

Of course, if it ever starts swaying dramatically,
the same factors come into play.

Jonesy
--
Marvin L Jones | jonz | W3DHJ | linux
38.24N 104.55W | @ config.com | Jonesy | OS/2
*** Killfiling google posts: http://jonz.net/ng.htm

Yes I meant "tower"