Practice Exam

T8D07

1. Which of the following describes DMR?

• A. An automatic computer logging technique for hands-off logging when communicating while operating a vehicle
• B. An automatic position tracking mode for FM mobiles communicating through repeaters
• C. A digital technique for transmitting on two repeater inputs simultaneously for automatic error correction
• D. A technique for time-multiplexing two digital voice signals on a single 12.5 kHz repeater channel

T2C06

2. What is the Amateur Radio Emergency Service (ARES)?

• A. A group of licensed amateurs who are members of the military and who voluntarily agreed to provide message handling services in the case of an emergency
• B. A training program that certifies amateur operators for membership in the Radio Amateur Civil Emergency Service
• C. A training program that provides licensing courses for those interested in obtaining an amateur license to use during emergencies
• D. A group of licensed amateurs who have voluntarily registered their qualifications and equipment for communications duty in the public service

T6C04

3. What is component 3 in figure T-1?

• A. Transistor
• B. Lamp
• C. Ground symbol
• D. Resistor

T6B05

4. What type of transistor has a gate, drain, and source?

• A. Tesla-effect
• B. Bipolar junction
• C. Field-effect
• D. Varistor

T7D11

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

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

T5C11

6. How much current is required to deliver 120 watts at a voltage of 12 volts DC?

• A. 12 amperes
• B. 10 amperes
• C. 132 amperes
• D. 0.1 amperes

T5B03

7. Which is equal to one kilovolt?

• A. One hundred volts
• B. One million volts
• C. One thousand volts
• D. One one-thousandth of a volt

T8C04

8. Which of the following is good procedure when contacting another station in a contest?

• A. Send only the minimum information needed for proper identification and the contest exchange
• B. Sign only the last two letters of your call if there are many other stations calling
• C. Contact the station twice to be sure that you are in his log
• D. All these choices are correct

T7A01

9. Which term describes the ability of a receiver to detect the presence of a signal?

• A. Total Harmonic Distortion
• B. Linearity
• C. Sensitivity
• D. Selectivity

T1B05

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

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

T1A10

11. What is the Radio Amateur Civil Emergency Service (RACES)?

• A. A radio service using amateur frequencies for emergency management or civil defense communications
• B. All these choices are correct
• C. An emergency service using amateur operators certified by a civil defense organization as being enrolled in that organization
• D. A radio service using amateur stations for emergency management or civil defense communications

T0C12

12. How does RF radiation differ from ionizing radiation (radioactivity)?

• A. RF radiation is perfectly safe
• B. RF radiation is limited in range to a few feet
• C. RF radiation can only be detected with an RF dosimeter
• D. RF radiation does not have sufficient energy to cause chemical changes in cells and damage DNA

T3A11

13. Which region of the atmosphere can refract or bend HF and VHF radio waves?

• A. The stratosphere
• B. The mesosphere
• C. The troposphere
• D. The ionosphere

T6D06

14. What component changes 120 V AC power to a lower AC voltage for other uses?

• A. Variable capacitor
• B. Diode
• C. Transistor
• D. Transformer

T1F11

15. 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. All these choices are correct
• C. The club must have at least four members
• D. The club must be registered with the American Radio Relay League

T4A07

16. Which of the following connections is made between a computer and a transceiver to use computer software when operating digital modes?

• A. Computer "line in" to transceiver push-to-talk
• B. Computer "line out" to transceiver push-to-talk
• C. Computer "line out" to transceiver speaker connector
• D. Computer "line in" to transceiver speaker connector

T1E01

17. When may an amateur station transmit without a control operator?

• A. When the station licensee is away and another licensed amateur is using the station
• B. When the transmitting station is an auxiliary station
• C. Never
• D. When using automatic control, such as in the case of a repeater

T2B03

18. Which of the following describes a linked repeater network?

• A. A system of repeaters linked by APRS
• B. A single repeater with more than one receiver
• C. A network of repeaters in which signals received by one repeater are transmitted by all the repeaters in the network
• D. Multiple repeaters with the same control operator

T8A11

19. What is the approximate bandwidth required to transmit a CW signal?

• A. 1000 Hz
• B. 2.4 kHz
• C. 150 Hz
• D. 15 kHz

T0B09

20. Why should you avoid attaching an antenna to a utility pole?

• A. The 60 Hz radiations from the feed line may increase the SWR
• B. The antenna will not work properly because of induced voltages
• C. The antenna could contact high-voltage power lines
• D. All these choices are correct

T1D10

21. How does the FCC define broadcasting for the Amateur Radio Service?

• A. Transmissions intended for reception by the general public
• B. Transmission of messages directed only to amateur operators
• C. Two-way transmissions by amateur stations
• D. Any transmission made by the licensed station

T4B06

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

T5D10

23. What is the voltage across a 2-ohm resistor if a current of 0.5 amperes flows through it?

• A. 1.5 volts
• B. 2.5 volts
• C. 1 volt
• D. 0.25 volts

T8B06

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

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

T7C01

25. What is the primary purpose of a dummy load?

• A. To prevent over-modulation of a transmitter
• B. To improve the signal-to-noise ratio of a receiver
• C. To prevent transmitting signals over the air when making tests
• D. To improve the efficiency of an antenna

T0A10

26. What hazard is caused by charging or discharging a battery too quickly?

• A. Half-wave rectification
• B. Excess output ripple
• C. Overheating or out-gassing
• D. Inverse memory effect

T3B04

27. What is the velocity of a radio wave traveling through free space?

• A. Speed inversely proportional to its wavelength
• B. Speed of sound
• C. Speed that increases as the frequency increases
• D. Speed of light

T5A11

28. What type of current flow is opposed by resistance?

• A. Alternating current
• B. RF current
• C. Direct current
• D. All these choices are correct

T1C04

29. What may happen if the FCC is unable to reach you by email?

• A. Revocation of access to the license record in the FCC system
• B. Fine and suspension of operator license
• C. Revocation of the station license or suspension of the operator license
• D. Nothing; there is no such requirement

T6A07

30. What electrical component is typically constructed as a coil of wire?

• A. Switch
• B. Inductor
• C. Diode
• D. Capacitor

T9A07

31. What is a disadvantage of using a handheld VHF transceiver with a flexible antenna inside a vehicle?

• A. Signal strength is reduced due to the shielding effect of the vehicle
• B. The bandwidth of the antenna will decrease, increasing SWR
• C. All these choices are correct
• D. The SWR might decrease, decreasing the signal strength

T2A11

32. What term describes an amateur station that is transmitting and receiving on the same frequency?

• A. Diplex
• B. Simplex
• C. Full duplex
• D. Multiplex

T3C01

33. Why are simplex UHF signals rarely heard beyond their radio horizon?

• A. They are too weak to go very far
• B. FCC regulations prohibit them from going more than 50 miles
• C. UHF signals are usually not propagated by the ionosphere
• D. UHF signals are absorbed by the ionospheric D region

T7B04

34. Which of the following could you use to cure distorted audio caused by RF current on the shield of a microphone cable?

• A. Band-pass filter
• B. Preamplifier
• C. Ferrite choke
• D. Low-pass filter

T9B08

35. Which of the following is a source of loss in coaxial feed line?

• A. Water intrusion into coaxial connectors
• B. High SWR
• C. Multiple connectors in the line
• D. All these choices are correct