Not according to Yaesu.
I called them and verified this.
The mast weight is included in the Yaesu K-Factor calculation.
It is in the user manual for the G-800DXA/G-1000DXA/G-2800DXA series (page
5).
They told me, for the antenna system I was considering, to take the
antenna/mast weight load off the rotor.
The K-Factor is Yaesu's formula for Yaesu rotors only.
John
Waa5zup
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] On Behalf Of K7LXC@aol.com
Sent: Sunday, April 06, 2008 6:00 PM
To: towertalk@contesting.com
Subject: [TowerTalk] Rotator capacity clarification
Howdy, TowerTalkians --
There was a recent rotator discussion where a poster determined the
loading that included a mast. The relative formula (weight times turning
radius)
gives Effective Moment (Hy-Gain) or K-Factor (Yaesu). This is a much better
way to look at it than the old square footage estimates but even this is an
estimate. An educated one, but an estimate nonetheless.
Throwing in the weight of the mast threw the numbers off significantly.
When it comes to rotator capacity, the mast is a non-issue. You don't add
the
mast weight in - just the antenna figures.
There's no problem including the mast. (weight 80# times turning
radius
of 1" = 13.3 foot/lbs) The mast has no effect on the rotator capacity.
Cheers,
Steve K7LXC
TOWER TECH -
Professional tower services for hams
Cell: 206-890-4188
**************Planning your summer road trip? Check out AOL Travel Guides.
(http://travel.aol.com/travel-guide/united-states?ncid=aoltrv00030000000016)
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