Technician Practice Test T7 – Station Equipment and Interference
Receivers and transmitters, interference, SWR and feed line problems, multimeters and soldering. Tap an answer to check it.
Score: 0 / 0 (15)
Question 1
Which term describes the ability of a receiver to detect the presence of a signal?
Sensitivity is a receiver's ability to detect weak signals.
Question 2
What is a transceiver?
A transceiver combines a receiver and a transmitter in one unit.
Question 3
Which of the following is used to convert a signal from one frequency to another?
A mixer converts a signal from one frequency to another.
Question 4
Which term describes the ability of a receiver to discriminate between multiple signals?
Selectivity is a receiver's ability to separate one signal from others nearby.
Question 5
What is the name of a circuit that generates a signal at a specific frequency?
An oscillator generates a signal at a specific frequency.
Question 6
What device converts the RF input and output of a transceiver to another band?
A transverter converts a transceiver's RF input and output to another band.
Question 7
What is the function of a transceiver’s PTT input?
When the PTT (push-to-talk) input is grounded, the transceiver switches from receive to transmit.
Question 8
Which of the following describes combining speech with an RF carrier signal?
Combining speech with an RF carrier is called modulation.
Question 9
What is the function of the switch which selects either SSB or CW-FM on some VHF power amplifiers?
The SSB/CW-FM switch sets the amplifier to operate correctly for the selected mode (linear for SSB).
Question 10
What can be added to the output of a transceiver to increase the transmitted output power?
An RF power amplifier added after the transceiver increases the transmitted power.
Question 11
What is the function of the Variable Frequency Oscillator (VFO) circuit in a transceiver?
The VFO sets the receive and transmit frequency.
Question 12
What can you do if you are told your FM handheld or mobile transceiver is over-deviating?
Over-deviation means your audio is too strong. Speaking farther from the microphone reduces it.
Question 13
What would cause a broadcast AM or FM radio to receive an amateur radio transmission unintentionally?
A broadcast radio that cannot reject strong signals outside its band may pick up a nearby amateur transmission.
Question 14
Which of the following can cause radio frequency interference?
Fundamental overload, harmonics and spurious emissions can all cause radio frequency interference.
Question 15
Which of the following might be the cause of low RF power output from a solid-state transceiver?
Solid-state transmitters reduce power when SWR is high to protect the output transistors.
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The questions are the official public Technician pool. The rules come from FCC Part 97. Always check these sources for the current rules.