Electronic Filing
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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,
350, 381
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
Call Sign Reservations & Authorizations
for broadcast
station call signs
Antenna Structure Registration via ULS
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Easy, one-stop access to all online U.S. Federal Government resources
www.USA.gov
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Why Do FM Frequencies End in an Odd Decimal Number?
The FM broadcast in the United States starts at 88.0 MHz and ends at 108.0 MHz.
The band is divided into 100 channels, each 200 kHz (0.2 MHz) wide. The center
frequency is located at 1/2 the bandwidth of the FM Channel, or 100 kHz (0.1 MHz)
up from the lower end of the channel. For example, the center frequency for
Channel 201 (the first FM channel) is 88.0 MHz + 0.1 MHz = 88.1 MHz.
Every FM center frequency ends with a decimal extension of .1, .3, .5, .7, or .9.
To convert FM channel numbers to/from a corresponding frequency, you may use the
conversion tool at http://www.fcc.gov/fcc-bin/audio/findvalues.html.
In the AM band, each AM station has a maximum bandwidth of 10 kHz,
extending 5 kHz above and 5 kHz below the assigned center frequency. The AM band in the
United States covers frequencies from 540 kHz up to 1700 kHz, in 10 kHz steps (540, 550,
560 ,,, 1680, 1690, 1700). 530 kHz in the United States is not available for
broadcast use, but is reserved for the use
of low powered Travellers' Information Stations. AM band stations do not have
assigned channel numbers.
AM and FM station assignments in other countries may not be made according
these procedures. In some countries, an FM station may be assigned a frequency
with an even decimal such as 106.2 MHz. In many places, AM broadcast stations
are assigned on frequencies with a 9 kHz bandwidth (531 kHz, 540 kHz,
549 kHz, etc.). (Links to other countries' regulatory agencies are
listed at http://www.fcc.gov/fcc-bin/world-govt-telecom.html.)
There are a few AM stations assigned in the United States in this manner,
in Guam, the
Marianas Islands, and
American Samoa.
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