El 01-04-14 4:38, Irv Finkleman escribió:
I've been doing a bit of reading and wonder about the following.

In a number of places I've read that in the case of a short vertical
antenna. the radials need be no longer than the height of the antenna
which in my case is about 8 ft. Even then I will be pressed to spread
out the currently planned eight 9ft. radials on my small balcony. I'll have
wire
all over the place but once I get things working I hope to lay a bit of
outdoor carpeting over the radials to make things look a little
neater.

No way will I be able to go 120 radials!!

Don't worry, it doesn't say that using less radials turns your antenna
into a dummy load. Just connect as much metal you can find together to
make a non-resonant ground provision.

Of course the overall antenna efficiency will be less compared to a
full size vertical with a solid floating or burried ground, but an
antenna with 10% radiation efficiency is always better then no antenna.

Don't forget to add some common mode provision (ferrite choke) where
the cable enters the shack.

Local interference may even be a bigger problem.

And there is no real practical
way of putting out off ground radials for each band!

The snow is still falling here!!! -- but I'm optimistic that by the
end of may I should be able to move things outside onto the
balcony and start playing.

Any comments or ideas will be welcome.

Irv VE6BP







--
Wim
PA3DJS
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