The range 30-300 kHz of the electromagnetic spectrum
"Low band" redirects here. For the musical group Low, see Low (band).
Low frequency
Frequency range
30–300 kHz
Wavelength range
10–1 km
Radio bands
ITU
1 (ELF)
2 (SLF)
3 (ULF)
4 (VLF)
5 (LF)
6 (MF)
7 (HF)
8 (VHF)
9 (UHF)
10 (SHF)
11 (EHF)
12 (THF)
EU / NATO / US ECM
A
B
C
D
E
F
G
H
I
J
K
L
M
N
IEEE
HF
VHF
UHF
L
S
C
X
Ku
K
Ka
V
W
mm
Other TV and radio
I
II
III
IV
V
VI
v
t
e
Low frequency (LF) is the ITU designation[1] for radio frequencies (RF) in the range of 30–300 kHz. Since its wavelengths range from 10–1 km, respectively, it is also known as the kilometre band or kilometre waves.
LF radio waves exhibit low signal attenuation, making them suitable for long-distance communications. In Europe and areas of Northern Africa and Asia, part of the LF spectrum is used for AM broadcasting as the "longwave" band. In the western hemisphere, its main use is for aircraft beacons, navigation (LORAN, mostly defunct), information, and weather systems. A number of time signal broadcasts also use this band. The main mode of transmission used in this band is ground waves, in which LF radio waves travel just above the Earth's surface, following the terrain. LF ground waves can travel over hills, and can travel far beyond the horizon, up to several hundred kilometers from the transmitter.
^"Rec. ITU-R V.431-7, Nomenclature of the frequency and wavelength bands used in telecommunications" (PDF). ITU. Archived from the original (PDF) on 31 October 2013. Retrieved 20 February 2013.
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