wrote
Jack Painter wrote:
wrote
One final note: the J-Pole is no miracle antenna. It's has zero gain
when
compared to any vertical antenna, and its entire attraction is it
"fairly"
easy construction, and very inexpensive construction materials. To
get as
*reliable* a vertical antenna for marine use that I required, might
have
cost well over $100. At or above that level the vertical antennas of
5/8
wavelength can normally provide gain of 6-10 dbi, and I do not want
to get
into what that is compared to as it has been hashed over a million
times. I
would leave it at "there will be considerable gain possible in
vertical
designs over the J-Pole". You have to be willing to pay for that.
Most users
are happy with J-Pole performance so it's record stands pretty well
on its
own.

73,
Jack Painter
Virginia Beach, Virginia

What type of verticle are you talking about, like a ground plane? Would
a ground plane be a better antenna for 2meters?


Yes/Yes, and there are a number of verticals with referenced gain far in
excess of the more or less unity-gain J-Pole. The specific ones I mentioned
are Marine. Like a vertical-dipole the J-Pole is a "complete" antenna and
requires no radials, I doubt that it could even benefit from them. And the
gain is referring to transmit, not receive, as all verticals are pretty
equal in reception (and it's not always pretty ;-)

What is your target for 2 meters? General area coverage or specific
directional? Need to null out signals or interference from specific
directions? Look at aYagi. J-Poles are not for anything special, just good
general coverage at about $10 in parts. At that job they have become very
popular antennas!

73,
Jack Painter
Virginia Beach, Virginia