Re: TV picture quality problems
- From: Ken Weitzel <kweitzel@xxxxxxx>
- Date: Mon, 12 Jun 2006 23:02:48 GMT
gcotterl@xxxxxxxxxxxxxxxxxx wrote:
Hi Ken,
The main boom of the antenna is "bubble-level" horizontal. My house is
about 850 feet above sea level and the broadcast towers are 6,000 feet
above sea level on Mt. Wilson which is about 45 miles away. How do I
know how much to angle the antenna?
Yes, I have the balun connects the antenna terrminals and the coax.
(In fact, the balun that came with the antenna was bad so Terk sent me
a new one).
There is no "wall" (little or big; with or without metal flashing)
around the roof-edge. However, there are a few PVC and metal air-vents
(about 1 foot tall) within 10 feet of the antenna.
The coax cable goes from the antenna, down one of the air vents, runs
through the attic/crawl-space for about 40 feet then drops down to the
TV set.
============
Right now, the top elements of the antenna are just barely visible
above the perimeter of the roof. I really can't raise the antenna
(even a few inches) because the condo-rules forbid any antennas from
being on or mounted to common-area property (including roofs). Since I
have no other location on my unit to put my antenna, I figure that, if
the condo-board can't see the antenna, they won't know it's there.
Hi...
The top of your mountain is pretty close to 1 mile higher than
your location. The curvature of the earth is about 8 inches per
mile. So, you have pretty close to 30 feet left to make up to
get yourself line of sight.
In other words, bubble level at your location is very wrong, you
have to raise the director (the shortest bars, pointed to the
station) end of the antenna considerably. I leave it to you to
find out how much, but a suggestion would be to either temporarily
run an AC cord up there, or get a hold of a battery operated set,
hook it up on the roof, and watch it while manipulating the antenna.
Or, another way might be to get a pair of walkie-talkies, and
while you on the roof play with the antenna someone else in your
apartment "guides" you with the walkie talkies.
Take care.
Ken
.
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