General
FM receiver
SSB and CW Receivers
Filters
Detection
Basic Qualification Question Bank for Amateur Radio Operator Certificate Examinations 12 June, 2014

Receivers

General

(A)

B-003-010-002 The figure in a receiver's specifications which indicates its sensitivity is the:
A RF input signal needed to achieve a given signal plus noise to noise ratio
B audio output in watts
C bandwidth of the IF in kilohertz
D number of RF amplifiers

(B)
B-003-010-003 If two receivers of different sensitivity are compared, the less sensitive receiver will produce:
A more signal or less noise
B less signal or more noise
C a steady oscillator drift
D more than one signal

(B)
B-003-010-008 The three main parameters against which the quality of a receiver is measured are:
A sensitivity, selectivity and image rejection
B sensitivity, selectivity and stability
C selectivity, stability and frequency range
D sensitivity, stability and cross-modulation

FM Receiver

(A)

B-003-003-001 In a frequency modulation receiver, the ________is connected to the input of the radio frequency amplifier.
A antenna
B mixer
C frequency discriminator
D limiter

(C)
B-003-003-002 In a frequency modulation receiver, the __________ is in between the antenna and the mixer.
A local oscillator
B intermediate frequency amplifier
C radio frequency amplifier
D audio frequency amplifier

(D)
B-003-003-003 In a frequency modulation receiver, the output of the local oscillator is fed to the:
A radio frequency amplifier
B limiter
C antenna
D mixer

(C)
B-003-003-004 In a frequency modulation receiver, the output of the ________is connected to the mixer.
A intermediate frequency amplifier
B speaker or headphones
C local oscillator
D frequency discriminator

(B)
B-003-003-005 In a frequency modulation receiver, the_________ is in between the mixer and the intermediate frequency amplifier.
A radio frequency amplifier
B filter
C limiter
D frequency discriminator

(D)
B-003-003-006 In a frequency modulation receiver, the ________ is located between the filter and the limiter.
A local oscillator
B mixer
C radio frequency amplifier
D intermediate frequency amplifier

(D)
B-003-003-007 In a frequency modulation receiver, the__________ is in between the intermediate frequency amplifier and the frequency discriminator.
A filter
B local oscillator
C radio frequency amplifier
D limiter

(A)
B-003-003-008 In a frequency modulation receiver, the __________ is located between the limiter and the audio frequency amplifier.
A frequency discriminator
B intermediate frequency amplifier
C speaker or headphones
D local oscillator

(C)
B-003-003-009 In a frequency modulation receiver, the _________ is located between the speaker or headphones and the frequency discriminator.
A intermediate frequency amplifier
B radio frequency amplifier
C audio frequency amplifier
D limiter

(D)
B-003-003-010 In a frequency modulation receiver, the __________ connects to the audio frequency amplifier output.
A intermediate frequency amplifier
B frequency discriminator
C limiter
D speaker or headphones

SSB and CW Receivers

(B)

B-003-005-001 In a single sideband and CW receiver, the antenna is connected to the ____________ .
A intermediate frequency amplifier
B radio frequency amplifier
C product detector
D local oscillator

(B)
B-003-005-002 In a single sideband and CW receiver, the output of the _____________ is connected to the mixer.
A audio frequency amplifier
B radio frequency amplifier
C filter
D intermediate frequency amplifier

(A)
B-003-005-003 In a single sideband and CW receiver, the __________ is connected to the radio frequency amplifier and the local oscillator.
A mixer
B beat frequency oscillator
C product detector
D filter

(A)
B-003-005-004 In a single sideband and CW receiver, the output of the ___________ is connected to the mixer.
A local oscillator
B intermediate frequency amplifier
C beat frequency oscillator
D product detector

(B)
B-003-005-005 In a single sideband and CW receiver, the _____________ is in between the mixer and intermediate frequency amplifier.
A product detector
B filter
C radio frequency amplifier
D beat frequency oscillator

(D)
B-003-005-006 In a single sideband and CW receiver, the __________ is in between the filter and product detector.
A audio frequency amplifier
B beat frequency oscillator
C radio frequency amplifier
D intermediate frequency amplifier

(B)
B-003-005-007 In a single sideband and CW receiver, the __________ output is connected to the audio frequency amplifier.
A intermediate frequency amplifier
B product detector
C local oscillator
D beat frequency oscillator

(B)
B-003-005-008 In a single sideband and CW receiver, the output of the ___________ is connected to the product detector.
A audio frequency amplifier
B beat frequency oscillator
C mixer
D radio frequency amplifier

(A)
B-003-005-009 In a single sideband and CW receiver, the __________ is connected to the output of the product detector.
A audio frequency amplifier
B intermediate frequency amplifier
C local oscillator
D radio frequency amplifier

(B)
B-003-005-010 In a single sideband and CW receiver, the __________ is connected to the output of the audio frequency amplifier.
A beat frequency oscillator
B speaker or headphones
C mixer
D radio frequency amplifier

(D)
B-003-010-005 A receiver designed for SSB reception must have a BFO(beat frequency oscillator) because:
A it beats with the received carrier to produce the other sideband
B it reduces the passband of the IF stages
C it phases out the unwanted sideband signal
D the suppressed carrier must be replaced for detection

(B)
B-003-010-006 A receiver receives an incoming signal of 3.54 MHz, and the local oscillator produces a signal of 3.995 MHz. To which frequency should the IF be tuned?
A 3.54 MHz
B 455 kHz
C 7.435 MHz
D 3.995 MHz

Filters

(D)

B-003-010-007 What kind of filter would you use to attenuate an interfering carrier signal while receiving an SSB transmission?
A A band pass filter
B An all pass filter
C A pi-network filter
D A notch filter

(C)
B-003-010-009 A communications receiver has four filters installed in it, respectively designated as 250 Hz, 500 Hz, 2.4 kHz, and 6 kHz. If you were listening to single sideband, which filter would you utilize?
A 6 kHz
B 500 Hz
C 2.4 kHz
D 250 Hz

(A)
B-003-010-010 A communications receiver has four filters installed in it, respectively designated as 250 Hz, 500 Hz, 2.4 kHz and 6 kHz. You are copying a CW transmission and there is a great deal of interference. Which one of the filters would you choose?
A 250 Hz
B 500 Hz
C 2.4 kHz
D 6 kHz

(A)
B-003-010-011 Selectivity can be placed in the audio stages of a receiver by the utilization of RC active or passive audio filters. If you were to copy CW, which of the following bandpasses would you choose?
A 750 - 850 Hz
B 2100 - 2300 Hz
C 300 - 2700 Hz
D 100 - 1100 Hz

Detection

(A)

B-004-002-002 One important application for diodes is recovering information from transmitted signals. This is referred to as:
A demodulation
B regeneration
C ionization
D biasing
The Georgian Bay Amateur Radio Club
P.O. Box 113, Owen Sound
Ontario Canada N4K5P1
© 1973 -2017 GBARC
November 20, 2017