Suggest you do a google search for baluns coupled with each of the following
Maxwell, Cebik, and Lewellen.

You will become enlightened grasshopper...

wrote in message
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On Thu, 15 Sep 2005 18:37:48 -0000, (Dave Platt)
wrote:
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If the antenna feed point is a matched condition what is the RF on the
coax shield from? It should be very small.