[opendtv] Re: Big? sticks

What are you talking about?  Specifically, do you understand the difference 
between Height Above Average Terrain(HAAT), HAGL (Height above ground level) 
and HAMSL (Height above mean sea level)?  

You reference HAAT in the first sentence, but I suspect that you have never 
done a FCC-mandated height above average terrain calculation (24 evenly spaced 
radials starting at true north, plus possibly the radial to the principal city, 
with 100 discrete, evenly spaced points between 2 and 10 miles from the 
transmitter site), and you don't know that other regulatory bodies have their 
own criteria (IIRC, the UK requires 72 radials, with other differences) and 
methodology.

The listing below seems to be a mixture of HAGL and HAMSL.  Also, note your 
conclusions without any U.S. data points.  It's always helpful when making 
comparisons to compare apples to apples and not apples to pears, or apples to 
unmentioned assumptions.

KCBS-TV Los Angeles is 5700 f or so AMSL, and more than 5000 f aat; Mt. 
Washington, NH is 11,000 feet or so AMSL; San Francisco, Chicago, Salt Lake 
City, Denver, Phoenix, Tucson, Yuma and Alb, NM also have very high AATs and 
AMSLs for the common tx points.  San Diego's V's are about 753 f amsl; the U's 
are about 2500.

None of the below save Rome would be considered a big stick in the U.S.  

How come you didn't mention the Patronas Tower in Indonesia?

Look at how high the broadcasters made the Mt. Sutro tower in SF above the 
surrounding ground level.

You continue to make ill-informed statements in areas where you should be 
asking questions.

hth

John Willkie


'Bert" wrote
In spite of often using low power transmitters, here are some examples of other 
big sticks (where "big" relates to HAAT) in some major oft-mentioned urban 
markets. Note how they compare with their US counterparts.

London
Crystal Palace - 313 m (1027')

Berlin
Alexanderplatz Fernsehturm - 365 m (1197')

Paris
Eiffel Tower antenna - 324 m (1062')

Rome
Monte Cavo (South, not counting tower) - 949 m (3114') Monte Mario (North, 
tower and hill) - 269 m (882')

Tokyo
Tokyo Tower antenna - 333 m (1093')


Looks like more similar than different.

Bert
 
 
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