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Re: [TowerTalk] Rotator mast mount

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Rotator mast mount
From: K8RI on TT <k8ri-on-towertalk@tm.net>
Date: Thu, 28 Apr 2011 13:31:46 -0400
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
On 4/29/2011 12:25 AM, Guy Molinari wrote:
> Anyone have any recommendations for mounting a Ham IV atop a 2" mast section. 
>    I'm building a standoff mount on one of my towers for a 3 element SteppIR. 
>   I've got some 2" angle iron that I'm going to bolt in place of 2 sets of 
> steps on my AB-105 tower.   This will allow for about a 4' piece of mast held 
> about 10-12" from the tower.
>
> Now I just need to track down a mount for the Ham IV.   I should get about 
> 100 degrees or so of azimuth.   Together with the 180 feature of the SteppIR 
> it should do the trick for JA/CA mults and for keeping the US off my QRG when 
> I've got the big boys pointed at EU.

I would strongly suggest a thrust bearing be mounted above the Ham IV 
even though side mounted.  The SteperIR would be a heavy load on the 
rotator at the top of a tower, let alone on top of a 4' mast to add 
leverage.

73

Roger (K8RI)
>
> Any thoughts?
>
> 73,
> Guy, N7ZG                                     
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