Mike Coslo wrote:
Andrea wrote:

One more thing is not clear to me:
If I use a 1/4 wave wire, where are the 6000 ohms?
Near the feed point or on the far end?

It will be at the far end of the antenna, Andrea.

One way to remember that:
The Z = V/I ratio is sky high at the end of an antenna
because the current is obviously very close to zero.
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73, Cecil http://www.w5dxp.com