Basse fréquence

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On appelle basse fréquence (BF) (ou LF, Low frequency en anglais), la bande de radiofréquences qui s'étend de 30 à 300 kHz (longueur d'onde de 10 à 1 km).

Spectre radiofréquence
ELF	SLF	ULF	VLF	LF/OL (LW)	MF/OM (MW)	HF/OC (SW)	VHF	UHF	SHF	EHF
3 Hz	30 Hz	300 Hz	3 kHz	30 kHz	300 kHz	3 MHz	30 MHz	300 MHz	3 GHz	30 GHz	300 GHz
100 000 km	10 000 km	1000 km	100 km	10 km	1 km	100 m	10 m	1 m	10 cm	1 cm	1 mm

Fréquence	Emetteur	Pays	Lieu	Antenne	Puissance	Commentaires
153 kHz	Deutschlandfunk	Allemand	Donebach	directional aerial, two guyed steel framework masts, 363 m high, fed at the top	500 kW	night 250 kW
	Radio Romania	Romania	Brasov		1200 kW
	NRK Finnmark	Norway	Ingoy	omnidirectional aerial, guyed steel framework mast of 362 m height	100 kW
162 kHz	France Inter	France	Allouis	two guyed steel framework masts, height 350 m, fed on the top	2000 kW
171 kHz	Radio Medi	Morocco	Nador	directional aerial consisting of at least two guyed steel framework masts, 380 metres high	2000 kW
	Radio Rossiya	Russia	Kaliningrad		1200 kW
177 kHz	Deutschlandradio Kultur	Germany	Zehlendorf near Oranienburg	cage aerial mounted on 359.7 m high guyed mast, triangle aerial on 3 150 m high guyed steel framework masts	500 kW	since August 29th, 2005 in DRM-Mode
183 kHz	Europe 1	Germany	Felsberg	directional aerial, 4 insulated guyed steel framework masts, heights: 282 m, 280 m, 26 m and 270 m	2000 kW	French Program
189 kHz	RÚV	Iceland	Hellissandur	omnidirectional aerial, guyed steel framework mast, height 412 m	300 kW
	RAI	Italia	Caltanissetta	omnidirectional aerial, guyed steel framework mast, height 282 m	10 kW	inactive since August 2004
198 kHz	BBC Radio 4	United Kingdom	Droitwich	T-aerial on 2 guyed steel framework masts with a height of 213 metre	500 kW	BBC World Service
	BBC Radio 4	United Kingdom	Burghead	Guyed steel framework mast	50 kW
	BBC Radio 4	United Kingdom	Westerglen	Guyed steel framework mast, height 152 m	50 kW
	Radio Polonia	Poland	Raszyn	Guyed insulated mast, 335 m high	500 kW	only active at daytime
207 kHz	Deutschlandfunk	Germany	Aholming	directional aerial, two guyed steel framework masts, 265 m high, fed at the top	500 kW	night 250 kW
216 kHz	Radio Monte Carlo	France	Roumoules	directional aerial, 3 300 metre high guyed steel framework masts, 330 metre high guyed steel framework mast as backup aerial	1200 kW	Transmitter site exterritorial, exclave of Monaco
225 kHz	Radio Polonia	Poland	Solec Kujawski	2 guyed radio masts fed on the top, heights 330 m and 289 m	1000 kW	Earlier tranmitter site Konstantynow
234 kHz	RTL	Luxemburg	Beidweiler	directional aerial, 3 guyed grounded steel framework masts, 290 m high, with vertikal cage aerials	2000 kW	Spare transmitter site Junglinster
243 kHz	Danmarks Radio	Danmark	Kalundborg	Alexanderson aerial, carried from 2 118 Meter high freestanding steel framework towers	300 kW
252 kHz	[RTA Algier]]	Algeria	Tipaza		1500 kW	French programme; during nighttime half transmitter-power
	RTÉ Radio 1	Ireland	Clarkestown	Guyed steel framework mast, insulated against ground, height 248 m	500 kW	Earlier used by Atlantic 252 and TeamTalk 252, increases power at night
261 kHz	Transmitter Burg	Germany	Burg	Cage aerial on 324 m high guyed steel framework mast, 210 m high steel tube mast, insulated against ground, omnidirectional radiation	200 kW	inactive at the moment, former used by Radio Wolga and Radioropa Info
	Radio Rossiya	Russia	Taldom		2500 kW	Most powerful transmitter in the world
270 kHz	ČRO 1 - Radiožurnál	Czech Republic	Topolna	two grounded guyed steel framework mast with cage aerials, height 257 m, directional radiation with maximum of radiation in East-West direction	500 kW
279 kHz	Musicmann279	Isle of Man	± 5 km off Ramsey	Crossed field antenna	500 kW	Tests planned to begin in early 2005 pending a summer 2005 launch
	BR1	Belarus	Minsk		500 kW