Most powerful radio station in the world coming toFitchburg???????

Sun Oct 23 18:15:25 EDT 2011

Presumably, the effective radiated power, 500 megawatts (500 MW),
which is the same thing as 500 million watts. A full class B FM
operating at the Class maximum HAAT (height above average terrain) of
150m (150 meters or 492 ft) is allowed an ERP (effective radiated
power) of 50,000 watts (50 kilowatts or 50 kW). If the HAAT exceeds
492' (many stations are grandfathered to 500'), the ERP must be
reduced approximately in proportion to the ratio of the square of the
HAAT divided by the square of 492'. Thus, if the actual HAAT is 984'
(2 x 492'), the allowed ERP would be reduced to approximately 1/2
squared or 1/4 of 50 kW (that is 12.5 kW). 500 MW is 10,000 times 50
kW. Back in the days of analog TV, some UHF (Ultra-High-Frequency) TV
stations operated at ERPs as high as 5 MW. That is the highest power I
have ever heard of for a broadcasting station of any type in the US.
500 mW is 100 times 5 MW.

Dan Strassberg (
eFax 1-707-215-6367

----- Original Message ----- 
From: "Don" <>
To: "Gary's Ice Cream" <>; "Boston radio e-mail
list" <>
Sent: Sunday, October 23, 2011 11:34 AM
Subject: Re: Most powerful radio station in the world coming

> From: "Gary's Ice Cream" <>
>> From todays Lowell Sun...
>> The 500-megawatt station will transmit
> What exactly is "500-megawatts""?

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