On 12 Jun 2005 23:39:08 -0700, wrote:

It takes at least
two decoupling sections to fully decouple an elevated vertical.

That statement is generally correct, however, if you were to use a
bead balun things change a bit. The reason being that on 2-meters the
balun is about 10" long (about 1/8-wavelength). When model correctly,
you can observe that such a balun is pretty good at choking of common
mode current without resorting to adding a second one.

It works even better on 200 MHz and 440MHz.

73,
Danny, K6MHE