The system which uses FM for the subcarriers is called _____(a) FM II system(b) FM/FM system(c) FM/AM system(d) 2 stage FM systemI have been asked this question at a job interview.This intriguing question originated from Frequency Division Multiplexing in portion Radio Transmitters, Communication Receivers, Multiplexing and Demultiplexing of Avionics

The system which uses FM for the subcarriers is called _____(a) FM II

1.	The system which uses FM for the subcarriers is called _____(a) FM II system(b) FM/FM system(c) FM/AM system(d) 2 stage FM systemI have been asked this question at a job interview.This intriguing question originated from Frequency Division Multiplexing in portion Radio Transmitters, Communication Receivers, Multiplexing and Demultiplexing of Avionics
Answer» RIGHT answer is (b) FM/FM system The BEST I can explain: Generally the INDIVIDUAL signals which require multiplexing are frequency modulated. These signals are then added up by the mixer and the resulting output signal is again frequency modulated before transmission.

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