[Elecraft] Antenna Question

[Geoffrey Mackenzie-Kennedy]

Neil,

Were you able to see if the shortened fan dipole used by the county ERC has
the feeder connected to all three elements, as would be the case with a
typical fan dipole?

If the feeder is connected *only* to the mid-point of the longest element,
and the two shorter elements are unbroken lengths of wire running parallel
to the longest wire, then this antenna would belong to the family of
multiband antennas known as "Coupled Resonators".  It would be tricky though
to use linear loading with these antennas.

73,

Geoff
LX2AO


On Monday, June 18, 2012 at 5:26 AM, Niel Skousen wrote:

> I'm pretty sure I've seen this antenna on the net, but don't recall the 
> name nor have I been able to find a link to a description / design data.

> The county ERC has a 'shortened fan dipole' with three parallel elements, 
> spaced about 18-24" apart on each side.   the longest element folds back 
> around the mid-> > length element toward the shortest element.   The 
> antenna end insulator / guy rope is attached to the long element, where it 
> folds back.   There appears (from the
> ground) to be a 6~8" insulator / gap between the end of the shortest 
> element, and the longest element where its been folded back.  no traps, 
> loading coils, or loading
> resistors that I can see.

> I'm assuming three or four band coverage (80, 40, 20, and 15 ??) with a 
> 75m dipole, a 40m dipole (with 15m as a freebie), and a 20 m dipole.   but 
> would be
> interested in more technical details if anyone can decipher my text 
> description above…