Operating Your Radio
What term describes an amateur station that is transmitting and receiving on the same frequency?
A. Full duplex
B. Diplex
C. Simplex
D. Multiplex
What is "C. Simplex"?
When may an amateur station transmit without a control operator?
A. When using automatic control, such as in the case of a repeater
B. When the station licensee is away and another licensed amateur is using the station
C. When the transmitting station is an auxiliary station
D. Never
What is "D. Never"?
What information is contained in the preamble of a formal traffic message?
A. The email address of the originating station
B. The address of the intended recipient
C. The telephone number of the addressee
D. Information needed to track the message
What is "D. Information needed to track the message"?
What does the abbreviation “RF” mean?
A. Radio frequency signals of all types
B. The resonant frequency of a tuned circuit
C. The real frequency transmitted as opposed to the apparent frequency
D. Reflective force in antenna transmission lines
What is "A. Radio frequency signals of all types"?
Which of the following types of propagation is most commonly associated with occasional strong signals on the 10, 6, and 2 meter bands from beyond the radio horizon?
A. Backscatter
B. Sporadic E
C. D region absorption
D. Gray-line propagation
What is "B. Sporadic E"?
What is the unit of impedance?
A. The volt
B. The ampere
C. The coulomb
D. The ohm
What is "D. The ohm"?
What is impedance?
A. The opposition to AC current flow
B. The inverse of resistance
C. The Q or Quality Factor of a component
D. The power handling capability of a component
What is "A. The opposition to AC current flow"?
What electronic component allows current to flow in only one direction?
A. Resistor
B. Fuse
C. Diode
D. Driven element
What is "C. Diode"?
An electronic keyer is
A. A device for switching antennas from transmit to receive
B. A device for voice activated switching from receive to transmit
C. A device that assists in manual sending of Morse code
D. An interlock to prevent unauthorized use of a radio
What is "C. A device that assists in manual sending of Morse code"?
Which type of modulation is commonly used for VHF and UHF voice repeaters?
A. AM
B. SSB
C. PSK
D. FM or PM
What is "D. FM or PM"?
When do FCC rules NOT apply to the operation of an amateur station?
A. When operating a RACES station
B. When operating under special FEMA rules
C. When operating under special ARES rules
D. FCC rules always apply
What is "D. FCC rules always apply"?
What does the term “traffic” refer to in net operation?
A. Messages exchanged by net stations
B. The number of stations checking in and out of a net
C. Operation by mobile or portable stations
D. Requests to activate the net by a served agency
What is "A. Messages exchanged by net stations"?
What is the approximate velocity of a radio wave in free space?
A. 150,000 meters per second
B. 300,000,000 meters per second
C. 300,000,000 miles per hour
D. 150,000 miles per hour
What is "B. 300,000,000 meters per second"?
What is the FCC Part 97 definition of a beacon?
A. A government transmitter marking the amateur radio band edges
B. A bulletin sent by the FCC to announce a national emergency
C. A continuous transmission of weather information authorized in the amateur bands by the National Weather Service
D. An amateur station transmitting communications for the purposes of observing propagation or related experimental activities
What is "D. An amateur station transmitting communications for the purposes of observing propagation or related experimental activities"?
What is antenna gain?
A. The additional power that is added to the transmitter power
B. The additional power that is required in the antenna when transmitting on a higher frequency
C. The increase in signal strength in a specified direction compared to a reference antenna
D. The increase in impedance on receive or transmit compared to a reference antenna
What is "C. The increase in signal strength in a specified direction compared to a reference antenna"?
What is the name for the flow of electrons in an electric circuit?
A. Voltage
B. Resistance
C. Capacitance
D. Current
What is "D. Current"?
What electrical component stores energy in an electric field?
A. Varistor
B. Capacitor
C. Inductor
D. Diode
What is "B. Capacitor"?
CW is
A. A type of electromagnetic propagation
B. A digital mode used primarily on 2 meter FM
C. A technique for coil winding
D. Another name for a Morse code transmission
What is "D. Another name for a Morse Code transmission"?
Which type of voice mode is often used for long-distance (weak signal) contacts on the VHF and UHF bands?
A. FM
B. DRM
C. SSB
D. PM
What is "C. SSB"?
Under which of the following circumstances are one-way transmissions by an amateur station prohibited?
A. In all circumstances
B. Broadcasting
C. International Morse Code Practice
D. Telecommand or transmissions of telemetry
What is "B. Broadcasting"?
Which of the following is a characteristic of good traffic handling?
A. Passing messages exactly as received
B. Making decisions as to whether messages are worthy of relay or delivery
C. Ensuring that any newsworthy messages are relayed to the news media
D. All these choices are correct
What is "A. Passing messages exactly as received"?
What is the unit of frequency?
A. Hertz
B. Henry
C. Farad
D. Tesla
What is "A. Hertz"?
What is generally the best time for long-distance 10 meter band propagation via the F region?
A. From dawn to shortly after sunset during periods of high sunspot activity
B. From shortly after sunset to dawn during periods of high sunspot activity
C. From dawn to shortly after sunset during periods of low sunspot activity
D. From shortly after sunset to dawn during periods of low sunspot activity
What is "A. From dawn to shortly after sunset during periods of high sunspot activity"?
T7C01 (A)
What is the primary purpose of a dummy load?
A. To prevent transmitting signals over the air when making tests
B. To prevent over-modulation of a transmitter
C. To improve the efficiency of an antenna
D. To improve the signal-to-noise ratio of a receiver
What is "A. To prevent transmitting signals over the air when making tests"?
Which of the following is a good electrical insulator? A. Copper B. Glass C. Aluminum D. Mercury
What is "B. Glass"?
What is the unit of capacitance?
A. The farad
B. The ohm
C. The volt
D. The henry
What is "A. The farad"?
The abbreviation "PSK means
A. Pulse Shift Keying
B. Phase Shift Keying
C. Packet Short Keying
D. Phased Slide Keying
What is "B. Phase Shift Keying"?
What type of amateur station simultaneously retransmits the signal of another amateur station on a different channel or channels?
A. Beacon station
B. Earth station
C. Repeater station
D. Message forwarding station
What is "C. Repeater station"?
Which of the following is an example of automatic control?
A. Repeater operation
B. Controlling a station over the internet
C. Using a computer or other device to send CW automatically
D. Using a computer or other device to identify automatically
What is "A. Repeater operation"?
What is meant by “check” in a radiogram header?
A. The number of words or word equivalents in the text portion of the message
B. The call sign of the originating station
C. A list of stations that have relayed the message
D. A box on the message form that indicates that the message was received and/or relayed
What is "A. The number of words or word equivalents in the text portion of the message"?
What describes the number of times per second that an alternating current makes a complete cycle?
A. Pulse rate
B. Speed
C. Wavelength
D. Frequency
What is "D. Frequency"?
What causes tropospheric ducting?
A. Discharges of lightning during electrical storms
B. Sunspots and solar flares
C. Updrafts from hurricanes and tornadoes
D. Temperature inversions in the atmosphere
What is "D. Temperature inversions in the atmosphere"?
What mode of transmission is commonly used by amateur radio satellites?
A. SSB
B. FM
C. CW/data
D. All these choices are correct
What is "D. All these choices are correct"?
What formula is used to calculate voltage in a circuit? A. E = I x R
B. E = I / R
C. E = I + R
D. E = I - R
What is "A. E = I x R"?
What describes the ability to store energy in a magnetic field?
A. Admittance
B. Capacitance
C. Resistance
D. Inductance
What is "D. Inductance"?
FT8 is
A. A wideband FM voice mode
B. A digital mode capable of low signal-to-noise operation
C. An eight channel multiplex mode for FM repeaters
D. A digital slow-scan TV mode with forward error correction and automatic color compensation
What is "B. A digital mode capable of low signal-to-noise operation"?
What is the national calling frequency for FM simplex operations in the 2 meter band?
A. 146.520 MHz
B. 145.000 MHz
C. 432.100 MHz
D. 446.000 MHz
What is "A. 146.520 MHz"?
What language may you use for identification when operating in a phone sub-band?
A. Any language recognized by the United Nations
B. Any language recognized by the ITU
C. English
D. English, French, or Spanish
What is "C. English"?
What is a grid locator?
A. A letter-number designator assigned to a geographic location
B. A letter-number designator assigned to an azimuth and elevation
C. An instrument for neutralizing a final amplifier
D. An instrument for radio direction finding
What is "A. A letter-number designator assigned to a geographic location"?
Why are simplex channels designated in the VHF/UHF band plans?
A. So stations within range of each other can communicate without tying up a repeater
B. For contest operation
C. For working DX only
D. So stations with simple transmitters can access the repeater without automated offset
What is "A. So stations within range of each other can communicate without tying up a repeater"?
What weather condition might decrease range at microwave frequencies?
A. High winds
B. Low barometric pressure
C. Precipitation
D. Colder temperatures
What is "C. Precipitation"?
What reading on an SWR meter indicates a perfect impedance match between the antenna and the feed line?
A. 50:50
B. Zero
C. 1:1
D. Full Scale
What is "C. 1:1"?
Which decibel value most closely represents a power increase from 5 watts to 10 watts?
A. 2 dB
B. 3 dB
C. 5 dB
D. 10 dB
What is "B. 3 dB"?
In which type of circuit is voltage the same across all components?
A. Series
B. Parallel
C. Resonant
D. Branch
What is "B. Parallel"?
What is the Internet Radio Linking Project (IRLP)?
A. A technique to connect amateur radio systems, such as repeaters, via the internet using Voice Over Internet Protocol (VoIP)
B. A system for providing access to websites via amateur radio
C. A system for informing amateurs in real time of the frequency of active DX stations
D. A technique for measuring signal strength of an amateur transmitter via the internet
What is "A. A technique to connect amateur radio systems, such as repeaters, via the internet using Voice Over Internet Protocol (VoIP)"?
Which of the following entities recommends transmit/receive channels and other parameters for auxiliary and repeater stations?
A. Frequency Spectrum Manager appointed by the FCC
B. Volunteer Frequency Coordinator recognized by local amateurs
C. FCC Regional Field Office
D. International Telecommunication Union
What is "B. Volunteer Frequency Coordinator recognized by local amateurs"?
What is the definition of third party communications?
A. A message from a control operator to another amateur station control operator on behalf of another person
B. Amateur radio communications where three stations are in communications with one another
C. Operation when the transmitting equipment is licensed to a person other than the control operator
D. Temporary authorization for an unlicensed person to transmit on the amateur bands for technical experiments
What is "A. A message from a control operator to another amateur station control operator on behalf of another person"?
What is the grace period for renewal if an amateur license expires?
A. Two years
B. Three years
C. Five years
D. Ten years
What is "A. Two years"?
What is the maximum peak envelope power output for Technician class operators in their HF band segments?
A. 200 watts
B. 100 watts
C. 50 watts
D. 10 watts
What is "A. 200 watts"?
What is the effect of vegetation on UHF and microwave signals?
A. Knife-edge diffraction
B. Absorption
C. Amplification
D. Polarization rotation
What is "B. Absorption"?
What can cause erratic changes in SWR?
A. Local thunderstorm
B. Loose connection in the antenna or feed line
C. Over-modulation
D. Overload from a strong local station
What is "B. Loose connection in the antenna or feed line"?
What is the voltage across a 10-ohm resistor if a current of 2 amperes flows through it?
A. 8 volts
B. 0.2 volts
C. 12 volts
D. 20 volts
What is "D. 20 volts"?
What electrical component is typically constructed as a coil of wire?
A. Switch
B. Capacitor
C. Diode
D. Inductor
What is "D. Inductor"?
Which of the following best describes an amateur radio mesh network?
A. An amateur-radio based data network using commercial Wi-Fi equipment with modified firmware
B. A wide-bandwidth digital voice mode employing DMR protocols
C. A satellite communications network using modified commercial satellite TV hardware
D. An internet linking protocol used to network repeaters
What is "A. An amateur-radio based data network using commercial Wi-Fi equipment with modified firmware"?