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Old December 4th 05, 01:29 AM posted to rec.radio.amateur.antenna
 
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Default My vertical blew down!!!

All,

Thanks so much for getting back on this... I am located about 50 miles
west of Gallup, NM.
I am in a trailer park so I do not have a very large lot. Also while
my super is a nice person, amything large enough to seriously ding a
trailer if it fell would not be not okay with him. My wife also wants
to put a storage shed next to the trailer fairly well adjacent to where
I mounted my first pipe into concrete. That limits my choices further.

My YF is generous enough to allow me to keep trying with this antenna,
but she is already concerned that I put $300 into it ($175 parts and
concrete, $50 tools, $75 to hire someone who speaks propane torch) and
thinks that I should leave the design and installation to a
professional, hence my question about decent mounting for less than
$1000.

For purposes of discussion the dimension limits to be about 25 to 35
foot vertical, and about 8 foot radius for mounted radials. I am
allowed to create ground counterpoises up to 40 feet long as long as
they snake into the back lot. Severe sway is not allowed as it could
spank the trailer.

One thing I have noticed is that street lamps and telephone poles are
unguyed but have no problem with this wind. Unfortunately, I am not
close enough to either of them to use them for a mounting.

(I cannot move, I am committed to staying. I got laid off by my
company in mid-september and we moved to a place where my wife could
use her new master's degree in education... and we have to stay in this
trailer right next to her school as a condition of her employment... it
is, fortunately, low rent forced housing).

Questions:

1) Since I have an 8 foot limit for radials, could I have 1/4
wavelength helical radials for 40m that could fit into an 8 foot
length?

1a) Could I do the same helical trick for the radiator as well?

2) My base 1 inch diameter galvanized pipe is presently 2 1/2 foot into
a 2 1/2 foot cube concrete filled hole with 2 1/2 foot exposed. What
could I screw in it that would not need guying, and would not bend nor
sway in 100 mph wind, and how high could I make that?

3) If I run up a metal pipe to 20 foot and then an insulated wire from
the dirt to the top alongside the pipe as my radiator, what effect will
the pipe have on the radiating wire?

Thanks again,

The Eternal Squire

 
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