Bob Miller wrote:
Well, the coax before the choke balun radiates signal, and I would
imagine the coax after the balun does not. How the balun, or line
isolator, as they call it, works, I dunno.

I wonder if the isolator simply reflects the common mode waves
thus causing common mode standing waves on the vertical section?
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73, Cecil http://www.qsl.net/w5dxp