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To increase the capacity of AMPS, Motorola developed ____________

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To increase the capacity of AMPS, Motorola developed ____________

(a) P-AMPS

(b) N-AMPS

(c) H-APMS

(d) R-AMPS

I got this question in a national level competition.

The query is from AMPS and ETACS in section Wireless Systems and Standards of Wireless/Mobile

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Right answer is (b) N-AMPS

To explain: To increase capacity in large AMPS markets, Motorola developed an AMPS like system called N-AMPS (narrowband AMPS) in 1991. N-AMPS did not become widespread as 2G digital technologies displaced many of the original FM analog systems.

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