On 7 Jan, 10:12, Cecil Moore wrote:
Richard Clark wrote:
Cecil Moore wrote:
http://www.w5dxp.com/rhombicT.EZ
This is a terminated rhombic in free space. The termination
resistor is 880 ohms and the 880 ohm feedpoint SWR is 1.032:1.

Which, of course, has nothing to do with Standing Waves ON THE
ANTENNA.

The SWR on the antenna has nothing to do with the standing
waves on the antenna?????? Good grief, Richard, it makes
sense now. You don't even know what a standing-wave antenna
is - so allow me to explain.

An antenna has a characteristic impedance range. If the
terminating resistor is in the center of that range,
*reflections are reduced to a negligible value*. That's
why terminated antennas are (usually) classified as
*traveling-wave antennas* - because they minimize reflections.

The ends of a dipole are (surprise) an open-circuit. All
of the forward wave is reflected. That's why a dipole is
a *standing-wave antenna*. There is nothing except radiation
that can reduce the reflections.

Sorry, nothing else you could have to say would make any
difference with a gross misconception like that.
--
73, Cecil *http://www.w5dxp.com

Cecil, Can you help me understand that the end of a dipole is an open
circuit?
Nothing falls out because the current changes direction ala AC because
the end of a dipole equates with the time that requires the current
changes direction. So where is the open circuit? I also cannot see why
radiation reduces reflection if the circuit can be completed with
iron!
Best regards
Art