Basic Electronics Paper 2, WASSCE (PC), 2016

Question 6

(a) Draw the block diagram of a superheterodyne receiver.
(b) State two advantages of superheterodyne receiver over tuned radio frequency receiver.

This questions requires the block diagram of superheterodyne receiver which contains the receiving antenna, RF amplifier, Mixer, Local Oscillator, IF amplifier, Demodulator, AF amplifier and Loudspeaker in that order

Observation

The expected answers were;

(b)        Advantages of superheterodyne receiver over tuned radio
frequency receiver
- Good selectivity
            - Good stability
            - Uniform gain
           - Good fidelity
           - Good sensitivity

Only a few Candidates responded well this question