A communication receiver has an intermediate frequency of 9 MHz. What is the frequency of its oscillator when it is tuned to 15 MHz?

Skip distance depends on time of day and angle of incidence.

A. True

B. False

It is found that a ship to ship communication suffers from fading. This can be avoided by using

A. Space diversity

B. Frequency diversity

C. Broad band antenna

D. Directional antenna

A buffer amplifier is

A. A double-tuned amplifier

B. A high gain D.C. amplifier

C. A cathode follower stage

D. None of the above

SSB can be generated by

A. Filter method

B. Phase cancellation method

C. Good attenuation characteristics

D. All of the above