Doug,

Sorry for the confusion.

Using North as 0 degrees reference.

Top to Bottom.

#1
90
270
150
210

#2
90
270
180
180

#3
75
285
145
215

I hope this helps out.

Charles Miller



----- Original Message ----- 
From: "n3dab" <[EMAIL PROTECTED]>
To: <Repeater-Builder@yahoogroups.com>
Sent: Saturday, April 08, 2006 9:17 PM
Subject: [Repeater-Builder] Re: Hypothetical dipole antenna question


> Charles,
> 
> Thank you for response. It prety much confirms my suspitions but I 
> didn't have a modeling program to check it out   My inent was to 
> install the dipoles as indicated in my 2nd arrangement 1 E./1 w. and 
> 2 S. in that order top to bottom.  Your option 1 and 2 are clear but 
> I'm not sure I fully understand the arrangement in you 3rd option.  
> Can you give me the orientation from top to bottom of the 4 dipoles 
> based on the compass bearing each is pointed to, with N. being 0 
> degrees for option #3.  
> 
> Again thanks and 73
> 
> Doug   N3DAB
> 
> --- In Repeater-Builder@yahoogroups.com, "Charles Miller" <ham-
> [EMAIL PROTECTED]> wrote:
> >
> > Doug,
> > 
> > I have 3 patterns for you.
> > 
> > First, If you do not want any signal to go "N"  and the signal 
> equal around
> > to the South then take the dipoles and place them in a 60 degree
> > orientation. The 2 on the top section should be 180 from each other 
> to the
> > East and West and the 2 on the bottom should set at a 60 degrees. 
> The 2
> > lower dipoles should be aligned 30 degrees to the east and West of 
> the South
> > alignment.
> > 
> > This will give you a fairly good pattern for the area that you want 
> to
> > cover.
> > 
> > The second pattern that will work is to place the dipoles in a 70 
> degree
> > pattern. Using South as the Zero degree alignment, 1 each at 35 
> degrees to
> > the East and West and the others at 70 degrees past that. This will 
> leave a
> > 150 degree arc or 75 degrees off North. This will provide a little 
> to the
> > North but not very much.
> > 
> > The first or second will work very well. If you need a little more 
> to the
> > south then take the top at 180 degrees and the bottom towards the 
> south at
> > 90 degrees. This will give you a little more gain to the South than 
> to the
> > East and West.
> > 
> > We had to do this in South Texas to keep a FED signal out of 
> Mexico. The
> > first is the one we used and it is still in use today.
> > 
> > Charles Miller
> > 
> > ----- Original Message ----- 
> > From: "n3dab" <[EMAIL PROTECTED]>
> > To: <Repeater-Builder@yahoogroups.com>
> > Sent: Saturday, April 08, 2006 1:23 PM
> > Subject: [Repeater-Builder] Hypothetical dipole antenna question
> > 
> > 
> > > 73 to the Group. Since there is a current discusion ongoing 
> related to
> > > dipole antennas I would appreciate any comments about the 
> hypothetical
> > > situation below:
> > >
> > > Asumming a DB224E antenna with 4 dipoles, top mounted on a tower, 
> and a
> > > coverage area that is a 270 degree arc (E,S and W.) from the 
> antenna,
> > > the remaing 90 degree segment (N.) being blocked by nearby and 
> much
> > > higher terrain, what is the best orientation of the dipoles on 
> the mast
> > > to provide the max. coverage to the 270 degree arc. all other 
> things
> > > aside.
> > >
> > > All dipoles aligned on one the S.face of the mast.
> > > 2 dipoles facing S., 1 facing E. and 1 facing W.
> > > @ facing SSE. and 2 facing SSW.
> > > 1 E., 1 SSE., 1 SSW., and 1 W.
> > > or some other arrangement
> > >
> > > TIA
> > > Doug  N3DAB
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > Yahoo! Groups Links
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> >
> 
> 
> 
> 
> 
> 
> 
> 
> 
>  
> Yahoo! Groups Links
> 
> 
> 
>  
> 
> 
> 
> 





 
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