Practice Exam

T8D02

1. What is a "talkgroup" on a DMR repeater?

• A. A group of operators sharing common interests
• B. A net that meets at a specified time
• C. A protocol that increases the signal-to-noise ratio when multiple repeaters are linked together
• D. A way for groups of users to share a channel at different times without hearing other users on the channel

T3A07

2. What weather condition might decrease range at microwave frequencies?

• A. Low barometric pressure
• B. High winds
• C. Precipitation
• D. Colder temperatures

T4A01

3. Which of the following is an appropriate power supply rating for a typical 50 watt output mobile FM transceiver?

• A. 24.0 volts at 12 amperes
• B. 13.8 volts at 12 amperes
• C. 13.8 volts at 4 amperes
• D. 24.0 volts at 4 amperes

T6A03

4. What electrical parameter is controlled by a potentiometer?

• A. Resistance
• B. Capacitance
• C. Field strength
• D. Inductance

T5B08

5. Which is equal to 1,000,000 picofarads?

• A. 0.001 microfarads
• B. 1000 microfarads
• C. 1,000,000,000 microfarads
• D. 1 microfarad

T6D02

6. What is a relay?

• A. An electrically-controlled switch
• B. An inverting amplifier
• C. A pass transistor
• D. A current controlled amplifier

T2A10

7. What is a band plan, beyond the privileges established by the FCC?

• A. A list of operating schedules
• B. A plan devised by a club to indicate frequency band usage
• C. A voluntary guideline for using different modes or activities within an amateur band
• D. A list of available net frequencies

T1F11

8. Which of the following is a requirement for the issuance of a club station license grant?

• A. The trustee must have an Amateur Extra Class operator license grant
• B. The club must have at least four members
• C. All these choices are correct
• D. The club must be registered with the American Radio Relay League

T7A11

9. Where is an RF preamplifier installed?

• A. Between the antenna and receiver
• B. At the output of the transmitter power amplifier
• C. At the output of the receiver audio amplifier
• D. Between the transmitter and the antenna tuner

T8C01

10. Which of the following methods is used to locate sources of noise interference or jamming?

• A. Radio direction finding
• B. Doppler radar
• C. Phase locking
• D. Echolocation

T1E07

11. When the control operator is not the station licensee, who is responsible for the proper operation of the station?

• A. Only the station licensee
• B. All licensed amateurs who are present at the operation
• C. Only the control operator
• D. The control operator and the station licensee

T0C01

12. What type of radiation are radio signals?

• A. Alpha radiation
• B. Non-ionizing radiation
• C. Ionizing radiation
• D. Gamma radiation

T5C03

13. What describes the ability to store energy in a magnetic field?

• A. Admittance
• B. Inductance
• C. Resistance
• D. Capacitance

T9A08

14. What is the approximate length, in inches, of a quarter-wavelength vertical antenna for 146 MHz?

• A. 50
• B. 19
• C. 112
• D. 12

T0A02

15. What health hazard is presented by electrical current flowing through the body?

• A. It may disrupt the electrical functions of cells
• B. All these choices are correct
• C. It may cause injury by heating tissue
• D. It may cause involuntary muscle contractions

T0B03

16. Under what circumstances is it safe to climb a tower without a helper or observer?

• A. When no electrical work is being performed
• B. When the work being done is not more than 20 feet above the ground
• C. When no mechanical work is being performed
• D. Never

T4B06

17. Which of the following controls could be used if the voice pitch of a single-sideband signal returning to your CQ call seems too high or low?

• A. The tone squelch
• B. The RIT or Clarifier
• C. The AGC or limiter
• D. The bandwidth selection

T5A04

18. What are the units of electrical resistance?

• A. Ohms
• B. Mhos
• C. Siemens
• D. Coulombs

T2B06

19. What type of signaling uses pairs of audio tones?

• A. D-STAR
• B. CTCSS
• C. DTMF
• D. GPRS

T1C06

20. From which of the following locations may an FCC-licensed amateur station transmit?

• A. From any vessel or craft located in international waters and documented or registered in the United States
• B. From anywhere within International Telecommunication Union (ITU) Regions 2 and 3
• C. From within any country that belongs to the International Telecommunication Union
• D. From within any country that is a member of the United Nations

T2C09

21. Are amateur station control operators ever permitted to operate outside the frequency privileges of their license class?

• A. Yes, but only in situations involving the immediate safety of human life or protection of property
• B. Yes, but only when part of a FEMA emergency plan
• C. No
• D. Yes, but only when part of a RACES emergency plan

T5D01

22. What formula is used to calculate current in a circuit?

• A. I = E * R
• B. I = E + R
• C. I = E - R
• D. I = E / R

T8A02

23. What type of modulation is commonly used for VHF packet radio transmissions?

• A. PSK
• B. SSB
• C. FM or PM
• D. AM

T9B11

24. Which of the following types of feed line has the lowest loss at VHF and UHF?

• A. Air-insulated hardline
• B. 75-ohm flexible coax
• C. Multi-conductor unbalanced cable
• D. 50-ohm flexible coax

T7B10

25. What might be a problem if you receive a report that your audio signal through an FM repeater is distorted or unintelligible?

• A. Your batteries are running low
• B. You are in a bad location
• C. All these choices are correct
• D. Your transmitter is slightly off frequency

T3C10

26. Which of the following bands may provide long-distance communications via the ionosphere's F region during the peak of the sunspot cycle?

• A. 23 centimeters
• B. 6 and 10 meters
• C. All these choices are correct
• D. 70 centimeters and 1.25 meters

T7C07

27. What happens to power lost in a feed line?

• A. It is converted into heat
• B. It is radiated as harmonics
• C. It increases the SWR
• D. It distorts the signal

T7D11

28. Which of the following precautions should be taken when measuring in-circuit resistance with an ohmmeter?

• A. Ensure that the circuit is operating at the correct frequency
• B. Ensure that the circuit is grounded
• C. Ensure that the circuit is not powered
• D. Ensure that the applied voltages are correct

T6B02

29. What electronic component allows current to flow in only one direction?

• A. Fuse
• B. Resistor
• C. Diode
• D. Driven element

T1A03

30. What do the FCC rules state regarding the use of a phonetic alphabet for station identification in the Amateur Radio Service?

• A. It is encouraged
• B. All these choices are correct
• C. It is required when in contact with foreign stations
• D. It is required when transmitting emergency messages

T1B05

31. How may amateurs use the 219 to 220 MHz segment of 1.25 meter band?

• A. Emergency traffic only
• B. Fast-scan television only
• C. Fixed digital message forwarding systems only
• D. Spread spectrum only

T3B09

32. What frequency range is referred to as UHF?

• A. 30 to 300 MHz
• B. 300 to 3000 MHz
• C. 300 to 3000 kHz
• D. 30 to 300 kHz

T1D04

33. Under what conditions is an amateur station authorized to transmit music using a phone emission?

• A. When incidental to an authorized retransmission of manned spacecraft communications
• B. When the music produces no spurious emissions
• C. When the music is transmitted above 1280 MHz
• D. When transmissions are limited to less than three minutes per hour

T6C12

34. Which of the following is accurately represented in electrical schematics?

• A. Component connections
• B. All these choices are correct
• C. Wire lengths
• D. Physical appearance of components

T8B06

35. Which of the following are inputs to a satellite tracking program?

• A. The Keplerian elements
• B. The last observed time of zero Doppler shift
• C. The satellite transmitted power
• D. All these choices are correct