Re: [IRCA] [am] Current antenna projects

["Neil Kazaross" <neilkaz@xxxxxxxxxxxxx>]

Your zigzag BOG idea is interesting, but I fear it will basically be a bunch 
of little BOGs in series and have poor directivity. I haven't read good 
things about zigzagged Bev-type antennas.

However, if I had told people 6 years ago that I was going to replace my 
elevated 600 foot mini-Bevs (full Bevs at very high end) with BOGs many 
would have had my scheduled for a lobotomy.

It is via experimentation that we learn new things in this hobby where much 
can still be a "black art". I don't think anything will be gained by 
zigzagging, but it is worth a try and I will mention that even a 200 ft BOG 
is decent for the very high end of BCB.

73 KAZ
----- Original Message ----- 
From: "Craig Healy" <bubba@xxxxxxxxxxxxxxxxxxxx>
To: "am list" <am@xxxxxxxxx>
Sent: Monday, December 11, 2006 10:32 PM
Subject: [am] Current antenna projects


> Current antenna projects include:
>
> 1.  A small copper tube loop, maybe under a foot in diameter.  The idea is
> to see just how small a loop can be made and still have good nulling
> capabilities.
>
> 2.  A BOG project.  Instead of running the 900' wire out in a straight 
> line,
> it will be run in a zigzag fashion going back and forth maybe ten feet, 
> and
> five feet between "zigs".  The idea is to slow the velocity of propagation
> and see if a physically shorter space yields a useable directionality.  If
> so, two wires will be set out and then phased.  It would be interesting to
> get the 900' BOG effect in a 200' yard.
>
> 3.  Find out why two copper loops do not phase well.  I have set out two
> loops about 200' apart, lined up in the same direction.  This should put 
> the
> loop null in the same azimuth on both.  Then phase them to either enhance
> the null, or to null a different direction.  For example, set each loop to
> null Atlanta on 750 and phase the two to null Caracas.
>
> 4.  Create a specific HD Radio antenna to eliminate the bad reception. 
> The
> best plan I have is to use a two hundred foot antenna in a hundred foot
> yard.  This would overlap into the neighbor's properties just as the HD
> signal overlaps the adjacent frequencies.  I'm hoping that having the
> antenna hog space that isn't mine will parallel the HD signal hogging
> spectrum that isn't theirs and give good reception.
>
> Well, hey, three out of four ain't bad..
>
> Craig Healy
> Providence, RI
>

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