Question

Why are ssb receivers more difficult to tune than conventional am receivers?

Answer 1

The options were
A. Need for carrier reinsertion
B. Bandwidth required by SSB cut in half
C. Complete signal cancellation may result
D. Overcrowded high-frequency spectrum
The answer is A.
For conventional AM demodulator the signal The carrier is used in the demodulation of the signal by the receiver. So if the carrier and sidebands fit within the receiver’s range, the signal will be correctly demodulated. But with SSB, there is no transmitted carrier. The receiver must produce it’s own carrier which is produce with the help of local oscillator.So there will be some always some tuning required to tune this Local Oscillator with the carrier of the received signal.

Answer 2

The answer is Need for carrier reinsertion
SSB receivers have a more complicated circuitry compared to normal AM receive.
These type of receivers need an oscillator that is used along with a mixer or product detector in order to amplify its modulation.