At 08:02 AM 10/9/2006, Dan Hearn wrote:
>"Since a vertical always has this basic lack of symmetry, there is no way
>to connect a feedline directly to the antenna without setting up
>common-mode currents that will make the feedline radiate. A coax-fed
>vertical always needs some kind of device to prevent the outer surface
>of the coax behaving as an unwanted part of the antenna."
>
>We know that buried radials are affected by the soil around them to the
>extent that they are not capable of being resonated. It seems to me that a
>buried feedline would not need a choke to stop current on the shield outer.
>Anyone agree or disagree?
One could conceivably resonate a buried wire, but, generally, it
would be pretty lossy. It would just be another radial.
I think you'd just want a choke where the feedline comes into the
shack, just to make sure that RF stays on the "inside" of the coax.
>Dan, N5AR
>
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