In a message dated 97-11-14 23:30:03 EST, firstname.lastname@example.org writes:
<< The FAA requires towers that are painted, to be painted in seven alternate
stripes of red and white, with red being at both the top and bottom of the
tower. Each of the 7 stripes are of equal length, whether the tower is 200
feet, or 2000 feet tall.
Those broadcast towers that are not painted, are required to have strobes
on them running day and nite.
Towers under 200 ft normally are not required to be either painted or
strobed, unless in close proximity of an airport.
73, Bernie W7KQ
If we're going to be exact, the paint color is a specific shade of orange and
white. It is alternated every one seventh of the height, begining and ending
with orange. Strobes do run day and night, however their intestity changes
during the day. Lighting for painted towers is strictly regulated to
type-accepted fixtures. The top beacon contains redundant bulbs, also type
approved (= expensive). Lights on painted towers are only on from dawn until
dusk. Even the blinker for lighted towers is type approved!
If you have a Rohn catalog, you can see the exact lighting scheme for various
heights of towers. It makes guessing at commercial tower heights a little
73 and DX,
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