| 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 |
