"Macman" wrote in
:
I'm about to retro fit a residential TV tower antenna into my new SW
antenna. I would also like to use it for my scanner on it as well.
Just a couple of questions:
1. The first I need to get is the actual antenna to mount. Can I
use the same antenna for my SW and scanner or do I need two different
configurations?
Not likely, vastly different frequencies.
2. If I was go to my local Radio Shack and pick out a new SW
antenna, which one would I look for? I know this particular question
is quite broad, but what I'm looking for is a good antenna array that
does not require too much 'fuss' to install.
Do you want an omni-directional or directional antenna? Most people use
omni-directional antennas. The antenna uniformly gathers signals from all
directions. A directional antenna usually requires a rotor to spin the
antenna. They'll be an increase in signal level from some signals while
other will be decreased, depending on the direction that the antenna is
aimed.
3. Grounding the tower itself. Would a 4 foot grounding rod be
enough, or should I look for a longer rod?
I saw an article on grounding HAM antennas, with a disclaimer of the need
to adequately sink the grounding rod. The author of the article claimed
that he actually saw rods that were blown from the ground during a
lightning strike. He said that the water in the ground had instantly
turned to steam, and the steam served as the driving force for driving
the rods out. Electrically speaking, usually the deeper the better. More
than one will also offer more protection, perhaps another poster can
comment on the feasibility of multiple rods. Always be aware of driving
rods concerning underground wiring, water and sewage pipes, etc.
Any input would be much appreciated. Thanks in advance.
Regards.
--
Never say never.
Nothing is absolute.
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