It will be ERP, at the antenna height, and directed at the horizon.
There is a classical music radio station near Raleigh, WCPE. It
broadcasts on 89.7. The antenna is up a ~1200 foot tower. It
broadcasts at 100 KW ERP.
At the studio, which is just outside the fall radius of the tower, on
the stock FM radio in my old Aerostar, not particularly high tech, I
can listen to the student radio station at UNC on 89.5 that runs 500
watts about 25 miles away. (This is not the 100 KW PBS flagship
station WUNC on 91.5.)
This is much harder to do a mile away from the transmitter. Up close
there is a cone of reduced radiation directly under a station like
this.
A 100,000 watt station must maintain that ERP. A less efficient
antenna means they have to run more power at the transmitter, raising
fixed costs to operate the station. The pattern of the antenna at the
top of the tower is a critical issue for any station owner.
I'd guess you'll be OK. There could be birdies and such, which
stations usually try to clean up, but not much in the way of raw
overload.
73, Guy.
----- Original Message -----
From: <N4OX@webtv.net>
To: <towertalk@contesting.com>
Sent: Thursday, October 17, 2002 8:59 PM
Subject: [Towertalk] Moving To New QTH
> Has anyone on the list lived near, very near a 100,000 watt FM
broadcast
> station tower? I have a unique housing situation. I am a Deputy
Sheriff
> and currently live on the grounds of an elementary school where I
> provide "security" for the school building and grounds. This has
been a
> good deal for me economics wise. Free lot rent, free electricity,
free
> garbage disposal and free water and sewer. The only real drawback
has
> been not being able to erect any real antennas. Now for the problem.
The
> school board has decided and is in the process of building a new
school
> and will possibly close the school where I currently live and most
> likely sell the building and property. No, I can't afford to buy the
old
> school.
>
> I may have an opportunity to move the trailer I own and live in to
> another site, that being the grounds of an FM broadcast station. The
> tower is approximatley 1200 feet tall and has a 100,000 watt
transmitter
> on it. The output power may not actually be 100,000 watts, that may
be
> E.R.P. In any event, it's a high power FM station operating at
107.3.
> There is ample room at the site for me to locate my trailer away
from
> the tower to avoid any possible damage or injury in case of a freak
ice
> storm. I would like to talk to anyone who has had a ham station
located
> "close" to a tower like this to find out if there were any RF
problems.
>
> You can either reply to the list or to me directly.
>
> 73, Jay N4OX
>
> _______________________________________________
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