[TowerTalk] 160m 8-circle BSEF array

[Richard (Rick) Karlquist (N6RK)]

Also see:

http://www.n6rk.com/7_hex_array.pdf

which has more gain than the 9-circle
and a much simpler feed system (to get
6 directions) and a little more complexity
to get 12 directions:

http://www.n6rk.com/driving_the_7_hex.pdf

Rick N6RK

> -----Original Message-----
> From: towertalk-bounces at contesting.com
> [mailto:towertalk-bounces at contesting.com]On Behalf Of SJ W3TX
> Sent: Wednesday, April 13, 2005 7:16 PM
> To: TowerTalk at contesting.com
> Subject: [TowerTalk] 160m 8-circle BSEF array
> 
> 
> I was evaluating the simplicity of the feed system for the 8-circle tx/rx
> array (4 active elements per steered direction) compared to the 9-circle
> array (9 active elements per steered direction)  in the 4th edition of
> ON4UN's book Low Band DXing.
> 
> My thought process is this.  The 8-circle array uses a simplified
> broadside/endfire feed to only four (4) of the eight (8) 
> elements...that is,
> four of the elements are left un-fed no matter which direction 
> the array is
> steered. I would anticipate that the four unfed elements would impair the
> gain and FB pattern if left floating.  Would they impair the 
> pattern if they
> were unfed but grounded??
> 
> The difference in gain and FB is negligible between the 8-circle and the
> 9-circle.  But the 9-circles feed system is light years more 
> complicated and
> perhaps not worth the additional complexity comapred to a simple BSEF
> network??
> 
> 73, Scott W3TX
> 
> 
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