On Jun 22, 7:11*am, Gary KW4Z wrote:
... I noticed a
new antenna mounted to their tower. *It was in an inverted Vee form
...approximately three white insulators ...
running between the two wires of this antenna. *...
The [bottom] wire proceeded out from the balun ...
and at each end appeared to ...be attached to the top wire ...
which ... ended up meeting the other side ...
*The top (middle) of the antenna had no
contact with the bottom middle (of the antenna), ...
Any input would *be appreciated.


What you describe is a common Folded Dipole. Whether or not it is
the B&W model can't be determined without a photo. However, in the
form you describe with the "top" wire going straight across with
nothing breaking it, makes it a simple folded dipole. It is cut for a
single band ( it is a 1/2 wave long, end-to-end) and is a little wider
in bandwidth that the single wire equivalent that you are probably
familiar with. With a tuner, it can work effectively on several
bands, similar to the ordinary dipole.
It'll actually work at ODD harmonics fairly well without a tuner. As
a 40 meter dipole on 15 meters.

These two wires are in parallel as far as the antenna is concerned,
but the feed point (coax and balun) only sees HALF of the current.
With half the current, but the same power, means the feed voltage is
twice. This makes the impedance four times the ordinary dipole. 2V /
0.5I = 4Z Playing either with the diameters of the conductors (make
the top thicker), or adding more "straight through" wires (on "top")
raises the impedance more since less and less of the total antenna
current flows at the feed point.

Help?

73, Steve, K9DCI