Topband: [TowerTalk] Reverse feed system...

[Gene Smar]

Doug:

     Wire-based antennas like the one you're proposing (and like the ones I
have off my tower) are cheap.  Build it and try it.  You can always reuse
the wire from the radials.

     As another suggestion, try radials of two different lengths to give you
two points of low SWR within the broad 75/80M band.


73 de
Gene Smar  AD3F



-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of
Douglas Ruz / CO8DM
Sent: Friday, April 22, 2016 10:04 PM
To: topband at contesting.com
Cc: 'reflector Towertalk' <towertalk at contesting.com>
Subject: [TowerTalk] Reverse feed system...

Hi,

 

I would like try the Reverse Feed System (N4KG antenna) on 80m.

 

I have a 50 ft GROUNDED tower (isolated from the guy wires) and similar size
of Rohn 25G.How much top loading I need If radials (4) are connected at 15
ft?...

 

I have an spiderbeam on top but this antenna does not add any LOAD because
all elements are isolated.Anyway, I have a 6m Yagi. 5 elem on a 15ft boom.
The 6m yagi has all elem connected to the boom but the driven. I can install
the 6m yagi on top of the tower about 4 ft below the spiderbeam.

 

Maybe I need a larger 6m yagi to obtain enough loading ?

 

Thoughts ?

 

Doug, CO8DM

 

 

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