Comparison of radio systems

Many of the world's radio stations broadcast in a variety of analog and digital formats. This page will list and compare them in chart form.

Table
World radio systems (Terrestrial)
System Type Modulation Data rate Sidebands? Ch. Bandwidth (KHz) Radio spectrum Sound Codec Digital subchannels SFN Metadata/RDS/RBDS
AM radioAnalog radioAmplitude ModulationN/A ?18–20 kHz148.5-283.5 kHz (Longwave)
510–1610 kHz (Europe)
510–1710 kHz (USA and Canada)		N/AN/ANoNone
Motorola C-QUAMAnalog radio (AM stereo)QAMN/A ?18–20 kHz510–1610 kHz (Europe
510–1710 kHz (USA and Canada)		N/AN/ANoNone
DABDigital radioOFDM (DQPSK)around 1000 kbit/s (4 channels up to 256 kbit/s) ?1500 kHzVHF-High/174-240 MHz,
L-band/1452-1492 MHz		MPEG-Layer 2Yes, typically 4-6 "stations" per channelYesYes
DAB+Digital radioOFDM (DQPSK)up to 256 kbit/s ?1500 kHzVHF-High/174-240 MHz,
L-band/1452-1492 MHz		HE-AACNoYesYes
Digital Radio MondialeDigital radioCOFDM (QAM)up to 72 kbit/s ?4.5–5 kHz (hybrid mode),
9–10 kHz,
18-20 kHz		510-1610 kHz (Europe),
510–1710 kHz (USA and Canada),
SW, LW		MPEG-4 HE-AAC/CELP/HVXCYes, via IBOCNo?Yes
FM radioAnalog radioFrequency ModulationN/A ?200 kHz87.5-108 MHz,
76-90 MHz (Japan),
65.8-74 MHz (USSR)		N/AN/ANoneYes (depending on station)
HD RadioHybrid/Digital radioCOFDM-HDC (SBR)up to 60 kbit/s on AM,
up to 300 kbit/s on FM		 ?20–30 kHz on AM band ±5 kHz (on adjacent channel),
up to 400 kHz on FM band (2 full FM channels)		510–1710 kHz,
87.5-108 MHz		HDCup to 7 (3 full-power, 4 low-power) subchannels (FM)No?Yes

References
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