On Sat, 19 Jul 2003 15:25:47 -0500, W5DXP
wrote:

Dilon Earl wrote:
You can indeed get 200 watts
to (incident upon) the antenna with a 100 watt transmitter. Trouble
is, the antenna only accepts half of that power.

Where does the other 100 watts go?

It is reflected back toward the source. It causes standing waves
and additional losses in the transmission line.

For some reason I need a circulator on my SB-401.

Only if you allow reflected energy to reach your SB-401.

How can I stop it from reaching my SB-401?

Does the SB-401 have an adjustable Pi-net output? If so,
you can adjust it for a Zg-match which will keep reflected
energy from being incident upon the SB-401 amp. If not, you
can use an external antenna tuner.

So I can change my reflected power, or SWR by adjusting my Pi-net
output?

I have never seen either one change when changing my load and tune
controls.