I have mounted all four elements ON the tower leg, with no antenna mast.  The 
antenna worked just fine that way.

So you can mount it as close as you want.  I would suggest that you add a 
stabilizing bracket near the top of the antenna as well as the main mount at 
the bottom to keep the mast from banging against the tower in a high wind.  The 
top bracket would not have to be too sturdy as all it would need to do is stop 
the sway.  Of course if the dipoles are mounted on the tower leg itself, this 
is not a problem.

73 - Jim  W5ZIT

--- On Mon, 8/25/08, Don Kovalchik - W8DPK <[EMAIL PROTECTED]> wrote:
From: Don Kovalchik - W8DPK <[EMAIL PROTECTED]>
Subject: [Repeater-Builder] Side-mounted DB-224 performance
To: [email protected]
Date: Monday, August 25, 2008, 4:02 PM










    
            



Our club has permission to
mount our brand-new DB-224E on the side of the local hospital's tower,
about halfway up (90').  We want maximum signal to the north-east, so
will be mounting the antenna on the NE leg of the tower, with all 4
elements on the NE side of the mast.

Is it necessary to use a stand-off bracket? Or would it be OK to mount
the mast right next to the tower leg using the bracket(s) that came
with the antenna?  I don't care about performance to the south-west;
actually a null to the SW would be good to minimize interference from a
co-channel system only 100 miles away.



73,

--Don--  W8DPK






      

    
    
        
         
        
        








        


        
        


      

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