Thanks for the clarification, John. So I think the analyzer would best
help you determine the impedance match which may be affected by those
various affects and proximities that you refer to. It won't tell you
what your radiation pattern will be. Certainly coupling to nearby
metalic objects can detune an antenna (and change radiation patterns)
and so the adjustment of its location to minimize those affects would be
something you could see with such an analyzer, w.r.t. impedance and
SWR. You might best if possible find a location to mount the antenna
that has minimal affect from nearby conductors. Presumably minimal
affect may also result in less distortion of the desired radiation
pattern as well. However, in some cases the spacing of a vertical
antenna a given distance from a metalic object (mast, wall, etc) can
give possibly desired directional characterists as well, always
something to consider.
Mark, NK8Q
K2 4786
[EMAIL PROTECTED] wrote:
Comrades,
what I was wondering was whether an analyzer would help me locate and
tune an antenna on my boat. I was hoping to find out whether it would
"see" the capacitance and other effects of several of the large metal
structures above deck. I was hoping that I would be able to move the
antenna around, maybe tip it a bit, adjust its ground connections and
try a lot of things and have some hint of progress show up on the
analyzer. I was hoping I would be able to see whether grounding these
other structures was worthwhile or indifferent. I am not likely to
have to deal with strong adjacent signals nor other structures. All
"near-fiield" effects will be caused by a large radar arch (aluminum),
an aluminum jib crane (dinghy lift) and the other antennas. As
always, I'm astonished at the knowledge available on this reflector
and am appreciative of the help I'm getting.
John Ferguson
M/V Arcadian
_______________________________________________
Elecraft mailing list
Post to: [email protected]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com
_______________________________________________
Elecraft mailing list
Post to: [email protected]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com
