Question 1

The most important advantage of SSB over AM is:

Accepted Answer

A)  the resulting savings in power 
B)  simplicity in design 
C)  that it is a more effective utilization of the available frequency spectrum 
D)  that it is less subject to the effects of selective fading 
A)  the resulting savings in power 
B)  simplicity in design 
C)  that it is a more effective utilization of the available frequency spectrum 
D)  that it is less subject to the effects of selective fading

Question 2

Which of the following can be used as an SSB demodulator?

Accepted Answer

A)  mixer 
B)  RF amplifier 
C)  audio amplifier 
D)  AGC circuitry 
A)  mixer 
B)  RF amplifier 
C)  audio amplifier 
D)  AGC circuitry

Question 3

SSB transmitters are usually rated in terms of:

Accepted Answer

A)  power gain 
B)  modulation index 
C)  peak envelope power 
D)  voltage gain 
A)  power gain 
B)  modulation index 
C)  peak envelope power 
D)  voltage gain

Question 4

In an SSB transmitter having voice modulation using audio frequencies ranging from 100 Hz to 3 kHz, the upper and lower sidebands generated by the balanced modulator are separated by:

Accepted Answer

A)  40 Hz 
B)  200 Hz 
C)  6 kHz 
D)  500 Hz 
A)  40 Hz 
B)  200 Hz 
C)  6 kHz 
D)  500 Hz

Question 5

The type of sideband that involves having the upper sideband contain different information than the lower sideband is referred to as:

Accepted Answer

A)  SSBSC 
B)  ACSSB 
C)  vestigial sideband 
D)  independent sideband 
A)  SSBSC 
B)  ACSSB 
C)  vestigial sideband 
D)  independent sideband

Question 6

Voice transmission requires an audio frequency range of:

Accepted Answer

A)  20 Hz to 20 kHz 
B)  100 Hz to 3 kHz 
C)  500 Hz to 1 kHz 
D)  30 Hz to 10 kHz 
A)  20 Hz to 20 kHz 
B)  100 Hz to 3 kHz 
C)  500 Hz to 1 kHz 
D)  30 Hz to 10 kHz

Question 7

Which of the following will not work as a balanced modulator?

Accepted Answer

A)  a push-pull modulator 
B)  a ring-diode modulator 
C)  an LM1496 integrated circuit stage 
D)  a dual-gate FET and a band-pass filter 
A)  a push-pull modulator 
B)  a ring-diode modulator 
C)  an LM1496 integrated circuit stage 
D)  a dual-gate FET and a band-pass filter

Question 8

The PEP rating of an SSB transmitter is often misleading due to:

Accepted Answer

A)  the PEP rating is the same rating no matter what type of waveform the transmitter is providing. 
B)  the fact that with normal voice signals, an SSB transmitter develops an average of only one-third to one-fourth of its PEP rating. 
C)  the SSB transmitter's power supplies and components are not always designed for continuous duty PEP power levels. 
D)  all of the above 
A)  the PEP rating is the same rating no matter what type of waveform the transmitter is providing. 
B)  the fact that with normal voice signals, an SSB transmitter develops an average of only one-third to one-fourth of its PEP rating. 
C)  the SSB transmitter's power supplies and components are not always designed for continuous duty PEP power levels. 
D)  all of the above

Question 9

Crystal filters:

Accepted Answer

A)  employ phasing capacitors to produce a rejection notch of undesired resonant frequencies 
B)  have Q values as high as 50,000 
C)  employ phasing capacitors to produce a rejection notch of undesired resonant frequencies. 
D)  all of the above 
A)  employ phasing capacitors to produce a rejection notch of undesired resonant frequencies 
B)  have Q values as high as 50,000 
C)  employ phasing capacitors to produce a rejection notch of undesired resonant frequencies. 
D)  all of the above

Question 10

The main disadvantage of the phase method in generating SSB is:

Accepted Answer

A)  the complex design of the 90 degree phase shifting network for the carrier signal 
B)  the complex method of mixing the carrier with the intelligence signal 
C)  the complex method used to amplify the resulting SSB signal 
D)  the complex design of the 90 degree phase shifting network for the intelligence signal 
A)  the complex design of the 90 degree phase shifting network for the carrier signal 
B)  the complex method of mixing the carrier with the intelligence signal 
C)  the complex method used to amplify the resulting SSB signal 
D)  the complex design of the 90 degree phase shifting network for the intelligence signal

Question 11

The major disadvantage of the phase method of SSB generation is:

Accepted Answer

A)  does not use high Q filters 
B)  90 degree phase-shifting network for intelligence signal 
C)  requires two balance modulators 
D)  all of the above 
A)  does not use high Q filters 
B)  90 degree phase-shifting network for intelligence signal 
C)  requires two balance modulators 
D)  all of the above

Question 12

A more recently developed system of sideband that involves compressing the amplitude of the intelligence signal before modulation occurs is called:

Accepted Answer

A)  ACSSB 
B)  vestigial sideband 
C)  SSBSC 
D)  independent sideband 
A)  ACSSB 
B)  vestigial sideband 
C)  SSBSC 
D)  independent sideband

Question 13

Which is not an advantage of SSB over AM?

Accepted Answer

A)  SSB provides a more effective utilization of the available frequency spectrum 
B)  SSB has a resulting savings in power 
C)  simplicity in design 
D)  SSB is less subject to the effects of selective fading 
A)  SSB provides a more effective utilization of the available frequency spectrum 
B)  SSB has a resulting savings in power 
C)  simplicity in design 
D)  SSB is less subject to the effects of selective fading

Question 14

Why is the carrier signal needed in an SSB receiver?

Accepted Answer

A)  It is needed for the demodulator to be able to recreate the intelligence 
B)  Without a carrier, the signal strength of the received station is zero 
C)  The carrier actually contains the intelligence signal 
D)  It is needed for the receiver to maintain its sensitivity and selectivity 
A)  It is needed for the demodulator to be able to recreate the intelligence 
B)  Without a carrier, the signal strength of the received station is zero 
C)  The carrier actually contains the intelligence signal 
D)  It is needed for the receiver to maintain its sensitivity and selectivity

The most important advantage of SSB over AM is:

Which of the following can be used as an SSB demodulator?

SSB transmitters are usually rated in terms of:

In an SSB transmitter having voice modulation using audio frequencies ranging from 100 Hz to 3 kHz, the upper and lower sidebands generated by the balanced modulator are separated by:

The type of sideband that involves having the upper sideband contain different information than the lower sideband is referred to as:

Voice transmission requires an audio frequency range of:

Which of the following will not work as a balanced modulator?

The PEP rating of an SSB transmitter is often misleading due to:

Crystal filters:

The main disadvantage of the phase method in generating SSB is:

The major disadvantage of the phase method of SSB generation is:

A more recently developed system of sideband that involves compressing the amplitude of the intelligence signal before modulation occurs is called:

Which is not an advantage of SSB over AM?

Why is the carrier signal needed in an SSB receiver?

Introductory Topics

Amplitude Modulation: Transmission

Amplitude Modulation: Reception

Frequency Modulation: Transmission

Frequency Modulation: Reception

Communications Techniques

Digital Communications: Coding Techniques

Wired Digital Communications

Wireless Digital Communications

Network Communications

Transmission Lines

Wave Propagation

Antennas

Waveguides and Radar

Microwaves and Lasers

Television

Fiber Optics

Filters

Exam 4: Single-Sideband Communications

The most important advantage of SSB over AM is:

Which of the following can be used as an SSB demodulator?

SSB transmitters are usually rated in terms of:

In an SSB transmitter having voice modulation using audio frequencies ranging from 100 Hz to 3 kHz, the upper and lower sidebands generated by the balanced modulator are separated by:

The type of sideband that involves having the upper sideband contain different information than the lower sideband is referred to as:

Voice transmission requires an audio frequency range of:

Which of the following will not work as a balanced modulator?

The PEP rating of an SSB transmitter is often misleading due to:

Crystal filters:

The main disadvantage of the phase method in generating SSB is:

The major disadvantage of the phase method of SSB generation is:

A more recently developed system of sideband that involves compressing the amplitude of the intelligence signal before modulation occurs is called:

Which is not an advantage of SSB over AM?

Why is the carrier signal needed in an SSB receiver?

Introductory Topics

Amplitude Modulation: Transmission

Amplitude Modulation: Reception

Frequency Modulation: Transmission

Frequency Modulation: Reception

Communications Techniques

Digital Communications: Coding Techniques

Wired Digital Communications

Wireless Digital Communications

Network Communications

Transmission Lines

Wave Propagation

Antennas

Waveguides and Radar

Microwaves and Lasers

Television

Fiber Optics

Filters