Half-wave dipoles are equal no matter how they are fed. With an end-fed
dipole, the short counterpoise advocated by W8JI is merely a method of
accomplishing feed to that high impedance point. There is no difference
in the radiation of any half wave dipole (except as influenced by
ground, surrounding objects, etc.) - if you can couple RF into it, it
will radiate.
73,
Don W3FPR
On 6/27/2014 8:51 AM, K8JHR wrote:
Hmmm.... vertical dipole... vs... end fed half wave vertical "dipole"
- not sure these are equivalent in performance. I know W8JI thinks
the end fed half wave needs some sort of ground system-counterpoise to
keep the feed line from becoming part of the antenna, so I am
wondering - asking not telling - whether these two are really
equivalent? (He said reaching for his ARRL Antenna Book...)
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