General › G8 Signals and Emissions › G8B01
G8B01
Which mixer input is varied or tuned to convert signals of different frequencies to an intermediate frequency (IF)?
Pick an answer to check it.
Answer: B. Local oscillator
In a superheterodyne receiver, the local oscillator is tuned so that mixing it with each incoming signal produces the fixed intermediate frequency. The RF input is whatever signal arrives.
Tip: Tune the LO to land on the IF.