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| n |
based
on analog cellular systems
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– |
existing
analog cellular systems:
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n |
AMPS
(Advanced Mobile Phone System) in North America,
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operates
at 824-894 MHz, 832 channels of 30 kHz each.
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Variation
is N-AMPS (Narrowband AMPS) which uses 10kHz
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channels
(three times capacity of AMPS)
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n |
NMT
(Nordic Mobile Telephone Service) in Northern Europe:
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NMT450
operates at 450 MHz, NMT900 at 900 MHz
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n |
TACS
(Total Access Communications System) in U.K. Some
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variants
are JTACS (in Japan), E-TACS (expanded TACS in
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U.K.),
or J-TACS (Japan, similar to N-AMPS)
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