"Owen Duffy" wrote in message
...
lu6etj wrote in
:

On 3 mayo, 18:29, Ian Jackson
wrote:
In message
,
lu6etj writes

...
No, no :) both wires are introduced in each driven element tubes, at
similar mode as a coaxial cable stripped of braid is introduced in a
gamma rod.

I have not seen it done, and can't imagine wide application.

The technique presumably is to insert a (lossy) capacitive reactance in
series with the feedpoint, and such that the reactance decreases with
freqeuency, thus exacerbating the natural feedpoint impedance change.

Owen

I think it was Mosley that used it in their Classic 33 beam. I don't recall
exectally how it was made, but the driven element was in two insulated
pieces. Then a piece of coax (it may have been just the center part with
the braid stripped off) was placed in the driven element. Part ran inside
one element side and the other part ran the other way I don't think there
is any direct connection to the driven element.