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Advanced Mobile Phone Service is the term used by AT&T
BellLaboratories (prior to the break-up in 1984) to refer to its
cellulartechnology. The AMPS standard has been the foundation for the
industryin the United States, although it has been slightly modified in
recentyears. This service used to operate in the 825-845 MHz and 870-890MHz
bands. Currently, another 10 MHz has been added to the spectrum,changing the
name of the system to EAMPS or Extended AMPS.
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