"Reg Edwards" wrote in message
...
This suggests that other folks are correct in asserting that
the mast, and the outside of the feedline are doing a lot of the
radiating.
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What's wrong with radiation from the feedline? It's just as useful as
radiation from elsewhere.

If I have a nice yagi array aimed at the moon and thus a low system noise
temp, and the feedline is allowed to radiate, I would think that might have
a bit of an effect not only on the array's pattern but also ruin the system
noise temp. The return loss then is also a function of cable length, routing
etc. Hardly a predictable array.
I can think of other examples. Although I admit in the case of the Isotron,
cable radiation is probably an advantage.

Dale W4OP