On Tue, 11 Oct 2005 03:20:51 GMT, David wrote:

Does it matter that the outer sleeve and radiator element are connected
together in the model ?

The actual antenna only connects the sleeves to earth braid and the
centre conductor does not touch anything ?

In the model I supplied, the first wire (cleverly labeled "Source
Wire") contains the source. By modeling convention, a source must be
"on" a wire, so the wire connecting the upper radiator to the
skirt/sleeve is equivalent to the transmitter (coax center conductor)
and is *not* a short circuit.