F.M., A.M. and S.S.B. transmitters

Explanation of question 24

Conventionally, in SSB transmission,

  1. i and ii are both true
  2. i is true but ii is false
  3. i is false but ii is true
  4. i and ii are both false

The answer is :- 2 Conventionally, upper sideband is used for frequencies above 10 MHz and lower sideband for frequencies below 10 MHz. The 20 m band is the frequency range 14—14.35 MHz, therefore, use upper sideband. The 40 m band is the frequency range 7-7.1 MHz, therefore, use lower sideband.

 

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