1.

AMPS and ETACS use ___________ and _____ for radio transmission.(a) FM, TDD(b) FM, FDD(c) AM, TDD(d) FM, FDDI have been asked this question by my college director while I was bunking the class.Question is taken from AMPS and ETACS topic in division Wireless Systems and Standards of Wireless/Mobile

Answer»

The correct choice is (b) FM, FDD

The explanation: Like all other first generation, analog, CELLULAR systems, AMPS and ETACS use FREQUENCY modulation (FM) and frequency DIVISION duplex (FDD) for radio transmission.



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