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@contesting.com
> [mailto:towertalk-bounces@contesting.com]On Behalf Of SJ W3TX
> Sent: Wednesday, April 13, 2005 7:16 PM
> To: TowerTalk@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
>
>
> _______________________________________________
>
> See: http://www.mscomputer.com for "Self Supporting Towers",
> "Wireless Weather Stations", and lot's more. Call Toll Free,
> 1-800-333-9041 with any questions and ask for Sherman, W2FLA.
>
> _______________________________________________
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> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
>
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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