Rick N6RK:
On 12/16/2012 8:31 AM, Tom W8JI wrote:
You likely had an antenna with 1/2 wave of wire spooled up on a short
fiberglass rod, which would never behave like a half-wave.
You are exactly right. Unfortunately, this myth dies hard.
Below is a link to a page on this topic from "ANTENNAS," 3rd edition, by
John Kraus.
Kraus states in the middle of that page that the radiation resistance of
such an antenna is the same as a linear conductor of the same overall
height/length.
http://i62.photobucket.com/albums/h85/rfry-100/Helically-woundVertical.gif
RF
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