"David G. Nagel" wrote in message
...
Jerry Martes wrote:

"Cecil Moore" wrote in message
...

dansawyeror wrote:

Below is a link to a site that claims to model coax radiation from a
dipole.

http://www.smeter.net/feeding/feedpowr.php

Please note that the third wire to ground creates the unbalance
that causes feedline radiation. You seem to be confusing cause
and effect. The cause of the feedline radiation is the existence
of that third wire, not SWR. All it proves is that feedline
radiation is caused by that third wire path which unbalances
the source currents.
--
73, Cecil http://www.qsl.net/w5dxp


Cecil

How wrong would it be to say that the *coax* part of the line doesnt
radiate at all?
I see this as a situation where the *outer shield* of a transmission
line is conducting current that radiates.
It seems that a "balanced" antenna that is comprised of a single
conductor and a L shaped conductor that includes the outer conductor of
the coax, could be fed with a balanced line for modeling.

Jerry
What I was taught is that in a properly installed antenna system the coax
will not radiate. If the antenna is not properly matched to the coax you
get current flow along the outside of the coax shield.

Dave WD9BDZ

Dave

I'd agree with your statement if "matched" doesnt refer to *impedance*
match.

Jerry