Analog Cellular Phones

Matrix of Worldwide Wireless Telecommunication Standard Characteristics

Analog Cellular Telephones
Standard
AMPS
Advanced Mobile Phone Service
TACS
Total Access Communication System
NMT
Nordic Mobile Telephone
Mobile Frequency Range (MHz)
Rx:869-894 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
FDMA
FDMA
Duplex Method
FDD
FDD
FDD
Number of Channels
832
ETACS:1240 NTACS:400
NMT-450: 200 NMT-900: 1999
Channel Spacing
30kHz
ETACS: 25kHz NTACS: 12.5kHz
NMT-450: 25kHz NMT-900: 12.5kHz
Modulation
FM
FM
FM
Channel Bit Rate
n/a
n/a
n/a
Reference: Philips Semiconductors (Innovation in Wireless Communication)

 

   
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