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Re: [TowerTalk] ALIGNING ANTENNA

To: "Dale M. Schwartz" <dale@immlawfirm.com>, "Joe Subich, W4TV" <lists@subich.com>
Subject: Re: [TowerTalk] ALIGNING ANTENNA
From: JOHN OWENS <ham38john@comcast.net>
Date: Fri, 1 Jan 2021 12:08:37 -0800 (PST)
List-post: <mailto:towertalk@contesting.com>
You will end up loving it. I have one driving my Orion Rotator (really good 
rotator) and have been using it for about 2 years now. Love it. -  John Owens - 
  N7TK



 On 01/01/2021 11:57 AM Dale M. Schwartz <dale@immlawfirm.com> wrote:
> 
>  
> I have a Green Heren controller on order. Will that make any difference?
>                   Dale/K4ROZ
> 
> 
> [X]
> 
> Dale M. Schwartz
> SCHWARTZ | POSEL
> Immigration Law Group
> Suite 450 RiverEdge One
> 5500 Interstate North Pkwy., NW
> Atlanta, GA 30328
> 
> Tel:   770 951-1100
> Fax: 770 951-1113
> www.immlawfirm.com
> 
>    PAST PRESIDENT: AMERICAN
> IMMIGRATION LAWYERS ASS'N
>   ADJUNCT PROFESSOR: EMORY UNIVERSITY SCHOOL OF LAW (1989-2014)
> 
> 
> 
> 
> On Jan 1, 2021, at 2:11 PM, Joe Subich, W4TV <lists@subich.com> wrote:
> 
> On 2021-01-01 1:53 PM, Les Brown wrote:
> 
> >     I don't understand why you think it isn't right.
> 
> Simply put, the Hy-Gain controller does not have a correction for
> magnetic north and the Hy-Gain rotators have only 360 degree rotation.
> 
> If the antenna is 30 degrees off alignment and one adjusts the "north"
> position using the "calibrate" pot, the heading will be correct at
> north but will be off by a variable amount in the rest of the range -
> depending on whether the 30 degrees is clockwise or counter clockwise
> the indicator will show "south" (assuming the typical north centered
> scale) when the rotator is at 210 degrees (CCW limit) and "south" for
> 180 to 210 degrees (CW limit) or "south" for 150 (CCW limit) to 180
> and "south" at 150 (CW limit).
> 
> 73,
> 
>   ... Joe, W4TV
> 
> 
> On 2021-01-01 1:53 PM, Les Brown wrote:
> John,
>    I don't understand why you think it isn't right. The magnetic north offset 
> is a fixed offset for a given location. If your correct offset is let's say 
> 10 degrees and you have a misaligned antenna that is another 20 degrees off 
> in the same direction, why not just set the parameter to 30 degrees and not 
> worry about having to physically realign the mast? The only concern I can see 
> is if you don't have enough of a coax loop for the extra rotation.
> 73, Les VE3NNT
> -----Original Message-----
> From: JOHN OWENS [mailto:ham38john@comcast.net]
> Sent: Friday, January 01, 2021 1:04 PM
> To: Les Brown <lesbrown@sympatico.ca>; Dale M. Schwartz 
> <dale@immlawfirm.com>; towertalk@contesting.com
> Subject: Re: [TowerTalk] ALIGNING ANTENNA
> I kinda don't think that is right. Besides, the offset btwn mag and true is 
> unique to each location. -  John Owens -  N7TK
> On 01/01/2021 9:42 AM Les Brown <lesbrown@sympatico.ca> wrote:
> 
>  Dale,
>    Most rotor controllers have an offset for true north vs magnetic north. 
> Why don't you just adjust this parameter?
> 73, Les VE3NNT
> 
> -----Original Message-----
> From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of Dale 
> M. Schwartz
> Sent: Friday, January 01, 2021 12:22 PM
> To: towertalk@contesting.com
> Subject: [TowerTalk] ALIGNING ANTENNA
> 
> I just replaced my rotor (with a HAM-IV) on the bottom of my US Tower 55’ 
> flagpole with a SteppIR on top. The old rotor was off the tower for a few 
> weeks and I suspect the wind blew the beam a little.
>     Now my bearings are about 30-40 degrees off. So when my controller says I 
> am pointed due North, the beam is actually pointed NNW.
>     I know we could lower the tower and repoint the beam. But I’m looking for 
> suggestions on how to reorient the antenna from the ground.
>      Any thoughts would be appreciated.
>      HAPPY NEW YEAR!
>                  Dale/K4ROZ
> 
> 
> _______________________________________________
> 
> 
> 
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