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Old September 17th 08, 04:01 AM posted to rec.radio.amateur.antenna
Richard Clark Richard Clark is offline
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First recorded activity by RadioBanter: Jul 2006
Posts: 2,951
Default Quick Rooftop Antenna For Channel 2?

On Tue, 16 Sep 2008 18:21:22 -0700, "Sal M. Onella"
wrote:

MY DISTANT TRANSMITTERS ARE ON A 6,000
FT MOUNTAINTOP, WHICH IS A SIGNIFICANT ADVANTAGE FOR ME.


Hi Joe,

The impact of this statement is that with the transmitter antenna that
high, it can see to an horizon (edge of the viewable earth) that is
109 miles away. This is just the situation you need if your receive
antenna was sitting on the ground. Unfortunately, the Empire State
Building is not that tall (1200 feet or so), and it is effectively
(from your point of view, literally) underground by that needed
additional 4800 feet.

To make up the difference, you would lift that antenna off the ground,
and try to raise it that same 4800 feet. Unlikely. A gain antenna
will not make up for looking through 100 miles of mud and water.

On the flip side, if ducting is working (don't make a schedule based
on this coinciding with your calendar), rabbit ears on your roof will
do nicely. Myself, during the summer months in Colorado, I could get
Edmonton and Calgary Canada - more than 1000 miles away. Getting
them on separate occasions was more a surprise than a plan, however.
But I did manage to get to see an entire movie before the duct
collapsed.

A simple question that hasn't been addressed:
What do you see when you tune NYC stations?

73's
Richard Clark, KB7QHC