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Re: [TowerTalk] Swinging gate antenna mount

To: Robert Harmon <k6uj@pacbell.net>
Subject: Re: [TowerTalk] Swinging gate antenna mount
From: Richard Thorne <rthorne@rthorne.net>
Date: Fri, 5 Jun 2020 17:41:26 -0500
List-post: <mailto:towertalk@contesting.com>
One option is to use a green heron rt21 controller and setup soft limits.  That 
way the rotor will stop before the antenna or side mount hits the tower.

Rich - N5ZC

Sent from my iPhone

> On Jun 5, 2020, at 4:39 PM, Robert Harmon <k6uj@pacbell.net> wrote:
> 
> Dumb question.   When using the swinging gate, how do you make sure when the 
> rotator swings it around it won't hit the tower ?
> 
> 
> Bob
> K6UJ
> 
> 
> 
>> On Jun 5, 2020, at 1:52 PM, Grant Saviers <grants2@pacbell.net> wrote:
>> 
>> I have a Rohn 65 design in CAD, never built it, went with rings instead.  
>> Should have done the arms.  All 1/4" HRS steel plate, standard angles and 
>> channel, plus 2" NPT pipe, although other tube/pipe choices are easy.  
>> Different leg diameters depend on the u-bolt size (minor hole location 
>> change needed). Designed for hot dip galvanizing.  I designed for two 
>> antennas for up to 20' of pipe between top bearing and rotator. Or one 
>> antenna on a short pivot "mast". Uses a standard mount rotator at the bottom 
>> (my plan was Orion 2800) and a UHMW bearing at the top.  Make the plates on 
>> a laser or waterjet cutter.  Weld it up and HDG.
>> 
>> Reply off list and I well send 3D pdf's to review. Enough interest and some 
>> weld shop might make them.  Everything should UPS except the pipe, buy it 
>> locally.  Adding tabs and slots to the top and bottom supports for self 
>> fixturing of the welding would be nice.
>> 
>> Grant KZ1W
>> 
>>> On 6/5/2020 11:46, Jon Zaimes via TowerTalk wrote:
>>> Try here: http://www.w9iix.com/ii00012.htm
>>> Jon P. Zaimes, AA1K
>>> Tower climber for hire
>>> Website: aa1k.us
>>> Cell: 302-632-2353
>>> Email: jz73@verizon.net
>>> Hug your favorite tower every day, and always stay connected to it
>>>> On Friday, June 5, 2020 mike stokes <mike9v@gmail.com> wrote:
>>> I am looking for one as well.  Please reply to the list.
>>> 73
>>> Mike
>>> KK9V
>>> On Fri, Jun 5, 2020 at 2:20 PM Ignacy Misztal <no9e@arrl.net> wrote:
>>>> Does anybody make swinging gate mounts? I need one for 45G.
>>>> Ignacy, NO9E
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