Question 1

Demodulation of the SSB signal requires a beat-frequency oscillator and a(n)_____________.

Accepted Answer

A) intelligence signal 
B) mixer stage 
C) diode detector 
D) sideband receiver 
A) intelligence signal 
B) mixer stage 
C) diode detector 
D) sideband receiver

Question 2

What does it mean if two signals are said to be in quadrature?

Accepted Answer

A) At a 90° angle 
B) Output is zero with no modulation 
C) One-half that for the Foster-Seeley circuit 
D) Phase-shift detection arises quite often 
A) At a 90° angle 
B) Output is zero with no modulation 
C) One-half that for the Foster-Seeley circuit 
D) Phase-shift detection arises quite often

Question 3

Poor __________ causes problems,such as undesired interference and distortion,when a strong signal is received.

Accepted Answer

A) RF generator output 
B) dynamic range 
C) ambient temperature 
D) carrier frequency 
A) RF generator output 
B) dynamic range 
C) ambient temperature 
D) carrier frequency

Question 4

What is the factor most directly limiting sensitivity?

Accepted Answer

A) Bandwidth 
B) Carrier frequency 
C) Sufficient amplification 
D) Noise 
A) Bandwidth 
B) Carrier frequency 
C) Sufficient amplification 
D) Noise

Question 5

What is the purpose of the detector?

Accepted Answer

A) To recover the low-frequency intelligence or baseband signal from the much higher intermediate- or radio-frequency carrier. 
B) To remove any residual amplitude modulation and the amplitude variations resulting from noise. 
C) To make an economical LC oscillator at 100 MHz with sufficient frequency stability. 
D) To recreate the carrier. 
A) To recover the low-frequency intelligence or baseband signal from the much higher intermediate- or radio-frequency carrier. 
B) To remove any residual amplitude modulation and the amplitude variations resulting from noise. 
C) To make an economical LC oscillator at 100 MHz with sufficient frequency stability. 
D) To recreate the carrier.

Demodulation of the SSB signal requires a beat-frequency oscillator and a(n)_____________.

What does it mean if two signals are said to be in quadrature?

Poor __________ causes problems,such as undesired interference and distortion,when a strong signal is received.

What is the factor most directly limiting sensitivity?

What is the purpose of the detector?

Fundamental Communications Concept

Amplitude Modulation

Angle Modulation

Communications Circuits

Transmitters

Digital Communications Techniques

Digital Modulation and Demodulation

Telephone Networks

Wireless Communications Systems

Computer Communication and the Internet

Transmission Lines

Wave Propagation

Antennas

Waveguides and Radar

Fiber Optics

Filters

Exam 6: Receivers

Demodulation of the SSB signal requires a beat-frequency oscillator and a(n)_____________.

What does it mean if two signals are said to be in quadrature?

Poor __________ causes problems,such as undesired interference and distortion,when a strong signal is received.

What is the factor most directly limiting sensitivity?

What is the purpose of the detector?

Fundamental Communications Concept

Amplitude Modulation

Angle Modulation

Communications Circuits

Transmitters

Digital Communications Techniques

Digital Modulation and Demodulation

Telephone Networks

Wireless Communications Systems

Computer Communication and the Internet

Transmission Lines

Wave Propagation

Antennas

Waveguides and Radar

Fiber Optics

Filters