My mast is 2" OD 6061 AL 12' The antenna is a Force 12 "DX'er" 15/17/20m
tribander 56lbs and 8.51 sq ft windload with future plans to install a 10/12m
antenna above it.
73 NR6M
ex: KF7NMD
Sincerely,
Rex Turvin
www.nr6m.com
________________________________
From: Wayne Kline <w3ea@hotmail.com>
To: Rex Turvin <turvin2009@yahoo.com>; "towertalk@contesting.com"
<towertalk@contesting.com>
Sent: Tuesday, November 26, 2013 1:04 PM
Subject: RE: [TowerTalk] Rotor location
My first question to you is A: what size mast are you using both OD and Length
B: what antenna do you plan to install ?
Why That top section can be used with the rotor shelf on the top set of
rungs of the Rohn 25.
But that's ok if were talking about a C-3, A-3 TA 33 ect. but if your
going BIGGER the problem comes when it's time to repair or replace the rotor
The little stub is hard to keep centered by your TB3 .... if you lower it
far inside the #25 the cross rungs can become a problem.
Wayne W3EA
> Date: Tue, 26 Nov 2013 11:44:01 -0800
> From: turvin2009@yahoo.com
> To: towertalk@contesting.com
> Subject: [TowerTalk] Rotor location
>
> I now have my Rohn 25 tower assembled awaiting my concrete to cure before
> erecting.
> I am getting ready to mount my rotor. At the top of the Rohn 25 sections I am
> using A BPL25G thrust bearing assembly section which has the top plate
> approximately 18" above the 1st section of cross members. My plan is to place
> the rotor at the 2nd set of cross members on the top section.
> Is this a good distance from the thrust bearing? If not, how much spacing do
> I need and why?
> Thank you in advance for the advice. Wanting to make sure I do this as best
> as possible.
> 73 NR6M
>
>
>
> ex: KF7NMD
>
>
> Sincerely,
>
>
> Rex Turvin
> www.nr6m.com
> _______________________________________________
>
>
>
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