MB E-Filing Site
These FCC/MB forms MUST be electronically filed:
FCC Forms 301, 301-CA, 302-CA, 302-FM, 302-DTV, 302-TV, 303-S, 314,
315, 316, 318, 319, 323, 323-E, 337, 340, 346, 347, 349,
EEO Forms 395-A and 395-B have been suspended by
Commission Order FCC 01-34.
CDBS Users Guide or call (202)-418-2662
CDBS System Status
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station call signs
Antenna Structure Registration via ULS
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FMpower ERP and FM Station
This program uses the FM propagation
curves program to calculate the effective radiated power
(ERP) needed to achieve the maximum (reference) facilities for a given
FM station class. Only three pieces of information are
required to use this program -- the U.S. state of interest,
the station class, and the antenna height above average terrain (HAAT). The HAAT for a particular
FM station may be found via the FM Query.
For example, the program will tell you that 4.1 kW ERP at 122
meters HAAT is equivalent to reference Class A facilities of 6.0
kW ERP at 100 meters HAAT. Reference parameters for the various
classes are specified in 47 CFR 73.211 and may be viewed at FM Station Classes page.
Options are also available for 3.0 kW ERP / 100 meter HAAT Class A stations,
as well as for existing grandfathered short-spaced Class A stations
covered by the provisions of 47 CFR 73.213(c).
For shorter antenna heights, the equivalent ERP will often be
larger than the maximum permitted ERP for the station class. In
such cases, a warning message will be posted. In practical terms, this means
that coverage equivalent to the reference facilities for the
station class cannot be obtained with the given HAAT. (This also
illustrates the importance of antenna height on coverage for FM
and TV facilities.)
Equivalence between FM facilities is made by comparing the
distances to the 60 dBu (1 mV/m) F(50,50) service contour. The sole exception
to this practice is for those grandfathered Class A stations
covered by rule section 47 CFR 73.213(c). For such stations,
equivalence is determined by comparing the 34 dBu F(50,10)
interfering contour if the HAAT is below the class reference HAAT of 100
meters, or by comparing the 60 dBu contours if the HAAT is 100
meters or more.
The original FMPOWER program was written by Gary Kalagian.
Adapted for Internet use by Dale
Bickel in March 1999.