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Analog Cellular Telephones
Standard
AMPS/NAMPS
Narrow Band Advanced
Mobile System
TACS
Total Access
Communication System
NMT
Nordic Mobile
Telephone
Mobile Frequency Range (MHz)
Rx: 896-894
Tx: 824-849
ETACS:
Rx: 916-949, Tx: 871-904
NTACS:
Rx: 860-870, Tx: 915-925
NMT-450:
Rx: 463-468, Tx: 453-458
NMT-900:
Rx: 935-960, Tx: 890-915
Multiple Access Method
FDMA
Duplex Method
FDD
Number of Channels
AMPS: 832
NAMPS: 2496
ETACS: 1240
NTACS: 400
NMT-450: 200
NMT-900: 1999
Channel Spacing
AMPS: 30 kHz
NAMPS: 10 kHz
ETACS: 25 kHz
NTACS: 12.5 kHz
NMT-450: 25 kHz
NMT-900: 12.5 kHz
Modulation
FM
Channel Bit Rate
n/a
