On 29/11/2015 12:18, Fred Roberts wrote:
On 28/11/2015 22:11, gareth wrote:

Spike recently commented upon his success with DX by implementing at
the base of his vertical antenna a fan of 300 ground wires pointing
in the direction that he wished to work.

I've not seen my suggestion before, but why could one not just have a
1/4 wave vertical, with the other 1/4 wave making up the dipole being
rotatable for the desired direction of working?

This was covered in, IIRC, Pat Hawkers Technical Topics many years ago.
The Americans had done some research on this very topic during the
Vietnam war, if one bends a vertical dipole so that the two elements are
at right angles to each other it is possible it would seem to get some
directivity in the direction of the horizontal element.

Gareth is missing the point of the multitude of radials, which are there
essentially to get the ground in the radial arc looking like a sheet of
metal (and thus lowering the angle of the main lobe). Ideally they
should run out to 2.5 lambda, but I didn't have enough wire :-(

The bent arm of the dipole can't do that, and is essentially a
convenient place to attach the coax outer.


--
Spike

"Crime butchers innocence to secure a throne, and innocence struggles
with all its might against the attempts of crime"

- Maximilien Robespierre