On Mon, 04 Apr 2005 10:10:44 -0700, Wes Stewart
wrote:

[snip]

Another application is to shunt feed a grounded monopole, such as when
a grounded tower is used as a radiator. In this case too, the base
impedance is lower than the transmission line Z.

Before I'm taken to task, let me add, "is usually lower" than the
transmission line Z.\

Shunt feeding can be/is done on towers longer than 1/4 wavelength
where the Z at the bottom of the tower is higher than Zo.