A signal contains components at 400 Hz and 2400 Hz This signal modulates a carrier of frequency 100 MHz. However, after demodulation, it is found that the 400 Hz signal component is present. The channel bandwidth is 15 kHz. What is the reason for the higher frequency signal not to be detected properly?
1
Modulation used in FM and BW is insufficient
2
Modulation used in AM and BW is insufficient
3
Modulation used in FM but pre-emphasis is not used
4
Modulation used in AM but detector is for FM