Practice Exam

T3B10

1. What frequency range is referred to as HF?

• A. 3 to 30 MHz
• B. 300 to 3000 MHz
• C. 300 to 3000 kHz
• D. 30 to 300 MHz

T6B07

2. What causes a light-emitting diode (LED) to emit light?

• A. Reverse current
• B. Forward current
• C. Capacitively-coupled RF signal
• D. Inductively-coupled RF signal

T2C07

3. Which of the following is standard practice when you participate in a net?

• A. All these choices are correct
• B. Unless you are reporting an emergency, transmit only when directed by the net control station
• C. Record the time of each of your transmissions
• D. When first responding to the net control station, transmit your call sign, name, and address as in the FCC database

T1D03

4. When is it permissible to transmit messages encoded to obscure their meaning?

• A. Only during contests
• B. Never
• C. Only when transmitting control commands to space stations or radio control craft
• D. Only when transmitting certain approved digital codes

T6A04

5. What electrical component stores energy in an electric field?

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

T1E01

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

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

T8D11

7. What is an ARQ transmission system?

• A. A system used to encrypt command signals to an amateur radio satellite
• B. An error correction method in which the receiving station detects errors and sends a request for retransmission
• C. A special transmission format limited to video signals
• D. A method of compressing data using autonomous reiterative Q codes prior to final encoding

T5D04

8. What is the resistance of a circuit in which a current of 3 amperes flows when connected to 90 volts?

• A. 93 ohms
• B. 30 ohms
• C. 3 ohms
• D. 270 ohms

T6D01

9. Which of the following devices or circuits changes an alternating current into a varying direct current signal?

• A. Transformer
• B. Reflector
• C. Amplifier
• D. Rectifier

T1F11

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

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

T2B06

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

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

T7B09

12. What should be the first step to resolve non-fiber optic cable TV interference caused by your amateur radio transmission?

• A. Add a preamplifier to the TV antenna input
• B. Be sure all TV feed line coaxial connectors are installed properly
• C. Add a high-pass filter to the TV antenna input
• D. Add a low-pass filter to the TV antenna input

T4A01

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

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

T2A12

14. What should you do before calling CQ?

• A. Make sure you are authorized to use that frequency
• B. All these choices are correct
• C. Ask if the frequency is in use
• D. Listen first to be sure that no one else is using the frequency

T6C08

15. What is component 9 in figure T-2?

• A. Variable capacitor
• B. Variable resistor
• C. Variable inductor
• D. Variable transformer

T8A12

16. Which of the following is a disadvantage of FM compared with single sideband?

• A. All these choices are correct
• B. Voice quality is poorer
• C. FM signals are harder to tune
• D. Only one signal can be received at a time

T7C08

17. Which instrument can be used to determine SWR?

• A. Voltmeter
• B. Iambic pentameter
• C. Ohmmeter
• D. Directional wattmeter

T3C10

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

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

T5C06

19. What does the abbreviation "RF" mean?

• A. Reflective force in antenna transmission lines
• B. Radio frequency signals of all types
• C. The real frequency transmitted as opposed to the apparent frequency
• D. The resonant frequency of a tuned circuit

T0A09

20. What should be done to all external ground rods or earth connections?

• A. Waterproof them with silicone caulk or electrical tape
• B. Bond them together with heavy wire or conductive strap
• C. Tune them for resonance on the lowest frequency of operation
• D. Keep them as far apart as possible

T0C02

21. At which of the following frequencies does maximum permissible exposure have the lowest value?

• A. 50 MHz
• B. 3.5 MHz
• C. 440 MHz
• D. 1296 MHz

T5A04

22. What are the units of electrical resistance?

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

T1C09

23. What is the grace period for renewal if an amateur license expires?

• A. Five years
• B. Two years
• C. Ten years
• D. Three years

T5B12

24. Which is equal to 28400 kHz?

• A. 28.400 kHz
• B. 28.400 MHz
• C. 2.800 MHz
• D. 284.00 MHz

T8C02

25. Which of these items would be useful for a hidden transmitter hunt?

• A. A calibrated noise bridge
• B. Calibrated SWR meter
• C. A directional antenna
• D. All these choices are correct

T3A01

26. Why do VHF signal strengths sometimes vary greatly when the antenna is moved only a few feet?

• A. All these choices are correct
• B. VHF ionospheric propagation is very sensitive to path length
• C. Multipath propagation cancels or reinforces signals
• D. The signal path encounters different concentrations of water vapor

T1B03

27. Which frequency is in the 6 meter amateur band?

• A. 222.15 MHz
• B. 52.525 MHz
• C. 28.50 MHz
• D. 49.00 MHz

T0B08

28. Which is a proper grounding method for a tower?

• A. A ferrite-core RF choke connected between the tower and ground
• B. A connection between the tower base and a cold water pipe
• C. Separate eight-foot ground rods for each tower leg, bonded to the tower and each other
• D. A single four-foot ground rod, driven into the ground no more than 12 inches from the base

T8B06

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

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

T4B03

30. How is squelch adjusted so that a weak FM signal can be heard?

• A. Set the squelch threshold so that receiver output audio is on all the time
• B. Turn on the anti-squelch function
• C. Turn up the audio level until it overcomes the squelch threshold
• D. Enable squelch enhancement

T1A06

31. What is the FCC Part 97 definition of a beacon?

• A. A bulletin sent by the FCC to announce a national emergency
• B. An amateur station transmitting communications for the purposes of observing propagation or related experimental activities
• C. A continuous transmission of weather information authorized in the amateur bands by the National Weather Service
• D. A government transmitter marking the amateur radio band edges

T7D01

32. Which instrument would you use to measure electric potential?

• A. An ammeter
• B. A voltmeter
• C. An ohmmeter
• D. A wavemeter

T9B11

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

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

T9A02

34. Which of the following describes a type of antenna loading?

• A. Strengthening the radiating elements of a beam antenna to better resist wind damage
• B. Installing a spring in the base of a mobile vertical antenna to make it more flexible
• C. Inserting a resistor in the radiating portion of the antenna to make it resonant
• D. Electrically lengthening by inserting inductors in radiating elements

T7A07

35. What is the function of a transceiver's PTT input?

• A. Provides a transmit tuning tone when grounded
• B. Switches transceiver from receive to transmit when grounded
• C. Input for a key used to send CW
• D. Input for a preamplifier tuning tone