Goto Section: 2.100 | 2.102 | Table of Contents
FCC 2.101
Revised as of October 2, 2015
Goto Year:2014 |
2016
§ 2.101 Frequency and wavelength bands.
(a) The radio spectrum shall be subdivided into nine frequency bands, which
shall be designated by progressive whole numbers in accordance with the
following table. As the unit of frequency is the hertz (Hz), frequencies
shall be expressed:
(1) In kilohertz (kHz), up to and including 3 000 kHz;
(2) In megahertz (MHz), above 3 MHz, up to and including 3 000 MHz;
(3) In gigahertz (GHz), above 3 GHz, up to and including 3 000 GHz.
(b) However, where adherence to these provisions would introduce serious
difficulties, for example in connection with the notification and
registration of frequencies, the lists of frequencies and related matters,
reasonable departures may be made.1
1In the application of the ITU Radio Regulations, the Radiocommunication
Bureau uses the following units:
kHz: For frequencies up to 28 000 kHz inclusive;
MHz: For frequencies above 28 000 kHz up to 10 500 MHz inclusive; and
GHz: For frequencies above 10 500 MHz.
Band
number Symbols Frequency range (lower limit
exclusive, upper limit inclusive) Corresponding metric subdivision Metric
abbreviations
for the bands
4 VLF 3 to 30 kHz Myriametric waves B.Mam
5 LF 30 to 300 kHz Kilometric waves B.km
6 MF 300 to 3 000 kHz Hectometric waves B.hm
7 HF 3 to 30 MHz Decametric waves B.dam
8 VHF 30 to 300 MHz Metric waves B.m
9 UHF 300 to 3 000 MHz Decimetric waves B.dm
10 SHF 3 to 30 GHz Centimetric waves B.cm
11 EHF 30 to 300 GHz Millimetric waves B.mm
12 300 to 3 000 GHz Decimillimetric waves
Note 1: “Band N” (N = band number) extends from 0.3 × 10^N Hz to 3 × 10^N
Hz.
Note 2: Prefix: k = kilo (10^3), M = mega (10^6), G = giga (10^9).
(c) In communications between administrations and the ITU, no names, symbols
or abbreviations should be used for the various frequency bands other than
those specified in this section.
Band No. Symbols (terms)^2 Frequency range (lower limit exclusive, upper
limit inclusive) Corresponding metric subdivision Metric
abbreviations
for the bands
4 VLF (very low frequency) 3 to 30 kHz Myriametric waves B.Mam
5 LF (low frequency) 30 to 300 kHz Kilometric waves B.km
6 MF (medium frequency) 300 to 3,000 kHz Hectometric waves B.hm
7 HF (high frequency) 3 to 30 MHz Decametric waves B.dam
8 VHF (very high frequency) 30 to 300 MHz Metric waves B.m
9 UHF (ultra high frequency) 300 to 3,000 MHz Decimetric waves B.dm
10 SHF (super high frequency) 3 to 30 GHz Centimetric waves B.cm
11 EHF (extremely high frequency) 30 to 300 GHz Millimetric waves B.mm
12 300 to 3,000 GHz Decimillimetric waves
NOTE 1: “Band N” (N = band number) extends from 0.3 × 10^N Hz to 3 × 10^N
Hz.
NOTE 2: Prefix: k = kilo (10^3), M = mega (10^6), G = giga (10^9).
[ 70 FR 46583 , Aug. 10, 2005; 70 FR 53074 , Sept. 7, 2005; 75 FR 62933 , Oct.
13, 2010; 80 FR 38823 , July 7, 2015]
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Goto Section: 2.100 | 2.102
Goto Year: 2014 |
2016
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