[TowerTalk] Fwd: Stacking question - another reality data point

[Richard (Rick) Karlquist]

On 8/11/2016 8:48 AM, Hans Hammarquist via TowerTalk wrote:
>
>  I have had an idea for some time: When you feed all these stacked antennas in phase you will have optimum radiation to the horizon (or just above). My idea is to add switchable delay lines to the higher located antennas. (You could rather easily replace the damping networks in an attenuator with some coax do make this.) Thereby you will be able to get optimum angle for "higher up" propagation. You should select the steps to be small enough not to get "gaps".
>
> Any taker? (K1TTT?)
>
> Hans - N2JFS
>

I tried modeling stacks with phase shifts of both polarities
and was never able to come up with a configuration that seemed
like it would be useful.  It is one of those "squeezing on a
balloon" problems.

Although you describe this as "your idea" it is inconceivable
that it wasn't around decades ago.  If it made sense, someone
would be doing it.  As you say "beam tilt" for UHF TV antennas
is something else again and not analogous to HF radio.

Rick N6RK