Allocations

 
U.S. Non-Federal-Government Allocations
0 - 9 kHz


U.S. Federal Government Allocations
0 - 9 kHz


ITU Region 1 Allocations
8.3 - 9 kHz
METEOROLOGICAL AIDS 5.54A 5.54B 5.54C


ITU Region 2 Allocations
8.3 - 9 kHz
METEOROLOGICAL AIDS 5.54A 5.54B 5.54C


ITU Region 3 Allocations
8.3 - 9 kHz
METEOROLOGICAL AIDS 5.54A 5.54B 5.54C


SpectrumWiki


Footnotes


5.53 Administrations authorizing the use of frequencies below 9 kHz shall ensure that no harmful interference is caused thereby to the services to which the bands above 9 kHz are allocated.

5.54 Administrations conducting scientific research using frequencies below 9 kHz are urged to advise other administrations that may be concerned in order that such research may be afforded all practicable protection from harmful interference.

Could not find 5.54A

Could not find 5.54B

Could not find 5.54C

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Lightning Detection
Radiofrequency Identification (RFID)
Avalanche transceivers


Related Documents, Links, and Multimedia:
FCC Proceeding (8)

Engineering Data

Lower Frequency Center Frequency Upper Frequency
Frequency 0 Hz 4.5 kHz 9 kHz
Wavelength 0.0 N/A 66.6 km 33.3 km
Band designator(s) N/A VLF VLF
Isotropic collecting area N/A 353,188,467.5 m2 88,297,116.9 m2
Free space loss (1 m) N/A (near field) N/A (near field) N/A (near field)
Free space loss (1 km) N/A (near field) N/A (near field) N/A (near field)
Free space loss (10 km) 10.8 dB 5.5 dB 11.5 dB
Free space loss (100 km) 30.8 dB 25.5 dB 31.5 dB
Free space loss (1000 km) 50.8 dB 45.5 dB 51.5 dB
Free space loss
(35,786 km = GEO orbit)
81.9 dB 76.6 dB 82.6 dB
Free space loss (378,370 km = Moon) 102.4 dB 97.1 dB 103.1 dB