Question

What is the advantage of IF modulation?

(a) it uses SSB which further reduces its bandwidth

(b) modular section and visual exciter can be of any state

(c) it cannot be tuned

(d) modular section and visual exciter can be solid state devices

The question was posed to me in my homework.

The doubt is from Representation of SSB-SC in Time & Frequency Domain in section SSB Modulation of Analog Communications

Answer 1

Right answer is (d) modular section and visual exciter can be solid state devices

To explain I would say: Advantages of IF modulation is that the modular section and visual exciter can be solid state devices. Its other advantages are it can use VSB filter that can be introduced at low power level. Moreover it is economical.