Topband: Another non-traditional antenna working.

Terry Conboy n6ry at
Thu Nov 17 14:38:02 PST 2011


On 2011-11-16 12:22 PM, Rik van Riel wrote:
> On 11/16/2011 12:10 AM, Guy Olinger K2AV wrote:
>>> We are testing N3ND's new 160 antenna tonight (Monday local time) 1818 @ 0005Z.  This is another antenna based on RBN validated untraditional design.
>>> 73, Guy.
>> This is an up 70, over 60, down 5 wire fed via a feedline isolation
>> transformer against a 5/16 wave single wire folded counterpoise at 8
>> feet.  No radials.
>> There is no way his small lot property could support a dense radial
>> field, either buried or elevated.  Therefore, presuming that undense
>> irregular radials that would fit would be excessively lossy, per RBN
>> data previously gathered, the +33, -33 foot linear folded counterpoise
>> (FCP) is used instead, elevated at 8 feet.  The folds in the
>> counterpoise are designed to self-cancel fields as much as possible,
>> thereby minimizing ground induction, which is loss to skywave
> Is there more info available on this antenna?
> Especially a diagram (or crude drawing) of how things are
> done would be appreciated.
> A NEC model would be fantastic, but I'd be more than happy
> to prepare that from the crudest drawing anyone could send
> me, and then make it available to everybody else :)

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