RadioBanter - View Single Post

May 10th 06, 06:37 AM posted to rec.radio.amateur.antenna

On Wed, 10 May 2006 04:39:07 -0000, (Dave Platt)
wrote:

My guess is that the classic J-pole may be somewhat more vulnerable to
being de-tuned by nearby materials than a center-fed half-wave
radiator.

My experience at my kids' place is that it has the same effect on the
vertical dipole as it does with the jpole. I have a dipole I created
by using wire inside a cpvc pipe. The coax was rolled up to form the
choke balun. The dipole antenna has the same problem with hitting the
local repeaters as the jpole did. In the same places, the two
antennas had such similar effects that I could literally not tell a
difference either in audio or signal strength as displayed by the
radio. SUper J-Poles, on the other hand, perform much better than
either the j-pole or the vertical dipole.

--
73 for now
Buck
N4PGW