What might be the problem if you receive a report that your audio signal through the repeater is distorted or unintelligible?
A. Your transmitter may be slightly off frequency
B. Your batteries may be running low
C. You could be in a bad location
D. All of these choices are correct
D
What may happen if a transmitter is operated with the microphone gain set too high?
C.
What can you do if you are told your FM handheld or mobile transceiver is over deviating?
A.
What should you do if you receive a report that your station’s transmissions are causing splatter or interference on nearby frequencies?
B.
Which of the following would reduce ignition interference to a receiver?
A. Change frequency slightly
B. Decrease the squelch setting
C. Turn on the noise blanker
D. Use the RIT control
C
What could be happening if another operator reports a variable high-pitched whine on the audio from your mobile transmitter?
C.
What is the source of a high-pitched whine that varies with engine speed in a mobile transceiver’s receive audio?
A.
Which would you use to reduce RF current flowing on the shield of an audio cable?
A. Band-pass filter
B. Low-pass filter
C. Preamplifier
D. Ferrite choke
D
What type of filter should be connected to a TV receiver as the first step in trying to prevent RF overload from a nearby 2 meter transmitter?
C.
Where must a filter be installed to reduce harmonic emissions?
A. Between the transmitter and the antenna
B. Between the receiver and the transmitter
C. At the station power supply
D. At the microphone
A
Which of the following may be a cause of radio frequency interference?
A.
What is a symptom of RF feedback in a transmitter or transceiver?
A.
What should you do first if someone tells you that your station’s transmissions are interfering with their radio or TV reception?
C.
What is the most likely cause of interference to a non-cordless telephone from a nearby transmitter?
D. Improper transmitter adjustment
A.
What is a logical first step when attempting to cure a radio frequency interference problem in a nearby telephone?
B.
Which of the following may be useful in correcting a radio frequency interference problem?
A. Snap-on ferrite chokes
B. Low-pass and high-pass filters
C. Band-reject and band-pass filters
D. All of these choices are correct
D
What should you do if a "Part 15" device in your neighbor’s home is causing harmful interference to your amateur station?
C.
What is the electrical term for the electromotive force (EMF) that causes electron flow?
A.
What is the basic unit of electromotive force?
B.
Which instrument would you use to measure electric potential or electromotive force?
C.
What is the correct way to connect a voltmeter to a circuit?
D. In phase with the circuit
A.
What is the nominal voltage of a fully charged nickel-cadmium cell?
B.
Which battery type is not rechargeable?
C.
How much voltage does a mobile transceiver usually require?
C.
Where should a mobile transceiver’s power negative connection be made?
B.
What is the name for the flow of electrons in an electric circuit?
A.
Which instrument is used to measure electric current?
D.
How is an ammeter usually connected to a circuit?
C.
Electrical current is measured in which of the following units?
C.
Which of the following is a good electrical conductor?
A.
What is the name for a current that reverses direction on a regular basis?
A. Alternating current
B. Direct current
C. Circular current
D. Vertical current
A
What term describes the number of times per second that an alternating current reverses direction?
C.
Which of the following devices or circuits changes an alternating current into a varying direct current signal?
A.
What is the name for a current that flows only in one direction?
D. Smooth current
A.
What electronic component allows current to flow in only one direction?
B.
What are the names of the two electrodes of a diode?
D.
How is a semiconductor diode’s cathode lead usually identified?
D. All of these choices are correct
C.
What electrical component is used to oppose the flow of current in a DC circuit?
B.
What instrument is used to measure resistance?
B.
What type of component is often used as an adjustable volume control?
B.
What electrical parameter is controlled by a potentiometer?
D.
Which of the following is a good electrical insulator?
A.
What type of electrical component stores energy in a magnetic field?
D.
What electrical component is usually composed of a coil of wire?
B.
What is the ability to store energy in a magnetic field called?
B.
What is the basic unit of inductance?
A.
What is the ability to store energy in an electric field called?
A.
What is the basic unit of capacitance?
C.
What electrical component stores energy in an electric field?
A. Resistor
B. Capacitor
C. Inductor
D. Diode
B
What type of electrical component consists of two or more conductive surfaces separated by an insulator?
A. Resistor
B. Potentiometer
C. Oscillator
D. Capacitor
D
What electrical component is used to connect or disconnect electrical circuits?
A.
What electrical component is used to protect other circuit components from current overloads?
A.
Which of these components can be used as an electronic switch or amplifier?
D.
What class of electronic components is capable of using a voltage or current signal to control current flow?
A.
Which of the following electronic components can amplify signals?
B.
What is the term that describes a transistor's ability to amplify a signal?
D.
Which semiconductor component has an emitter electrode?
B.
Which of these components is made of three layers of semiconductor material?
B.
What does the abbreviation "FET" stand for?
D. Field Emission Thickness
A.
Which semiconductor component has a gate electrode?