Towertalk
[Top] [All Lists]

## Re: [TowerTalk] Rotator capacity clarification

 To: Re: [TowerTalk] Rotator capacity clarification "wa5zup" Sun, 6 Apr 2008 18:33:48 -0600 mailto:towertalk@contesting.com>
 ```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) _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists.contesting.com/mailman/listinfo/towertalk _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists.contesting.com/mailman/listinfo/towertalk ```
 Current Thread [TowerTalk] Rotator capacity clarification, K7LXC Re: [TowerTalk] Rotator capacity clarification, wa5zup <= Re: [TowerTalk] Rotator capacity clarification, Pete Smith