In a broadcast superheterodyne receiver, the
A. local oscillator operates below the signal frequency
B. mixer input must be tuned to the signal frequency
C. local oscillator frequency is normally double the IF
D. RF amplifier normally works at 455 kHz above the carrier frequency
Answer:B
In a broadcast superheterodyne receiver, the
A. local oscillator operates below the signal frequency B. mixer input must be tuned to the signal frequency C. local oscillator frequency is normally double the IF D. RF amplifier normally works at 455 kHz above the carrier frequency