Practice Exam

T9A07

1. 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

T1C06

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

• A. From anywhere within International Telecommunication Union (ITU) Regions 2 and 3
• B. From any vessel or craft located in international waters and documented or registered in the United States
• 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

T6D05

3. What type of circuit controls the amount of voltage from a power supply?

• A. Regulator
• B. Oscillator
• C. Filter
• D. Phase inverter

T7D11

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

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

T3A10

5. What effect does multi-path propagation have on data transmissions?

• A. Error rates are likely to increase
• B. No significant changes will occur if the signals are transmitted using FM
• C. Transmission rates must be increased by a factor equal to the number of separate paths observed
• D. Transmission rates must be decreased by a factor equal to the number of separate paths observed

T2A10

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

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

T1F11

7. 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. The club must be registered with the American Radio Relay League
• D. All these choices are correct

T5D01

8. 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

T7B02

9. What would cause a broadcast AM or FM radio to receive an amateur radio transmission unintentionally?

• A. The receiver is unable to reject strong signals outside the AM or FM band
• B. The microphone gain of the transmitter is turned up too high
• C. The audio amplifier of the transmitter is overloaded
• D. The deviation of an FM transmitter is set too low

T0B10

10. Which of the following is true when installing grounding conductors used for lightning protection?

• A. Common grounds must be avoided
• B. Wires must be carefully routed with precise right-angle bends
• C. Use only non-insulated wire
• D. Sharp bends must be avoided

T5B08

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

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

T8D08

12. Which of the following is included in packet radio transmissions?

• A. A header that contains the call sign of the station to which the information is being sent
• B. Automatic repeat request in case of error
• C. All these choices are correct
• D. A check sum that permits error detection

T1E08

13. 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 identify automatically
• D. Using a computer or other device to send CW automatically

T8C02

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

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

T6B03

15. Which of these components can be used as an electronic switch?

• A. Potentiometer
• B. Varistor
• C. Thermistor
• D. Transistor

T6C03

16. What is component 2 in figure T-1?

• A. Resistor
• B. Indicator lamp
• C. Transistor
• D. Connector

T6A03

17. What electrical parameter is controlled by a potentiometer?

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

T1D04

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

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

T1A04

19. How many operator/primary station license grants may be held by any one person?

• A. One for each permanent station location from which the person plans to operate
• B. One
• C. No more than two
• D. One for each band on which the person plans to operate

T3C01

20. 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 absorbed by the ionospheric D region
• D. UHF signals are usually not propagated by the ionosphere

T0A08

21. Where should a fuse or circuit breaker be installed in a 120V AC power circuit?

• A. In parallel with the hot and neutral conductors
• B. In series with the hot and neutral conductors
• C. In series with the hot conductor only
• D. In parallel with the hot conductor only

T4A01

22. 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. 24.0 volts at 4 amperes
• C. 13.8 volts at 12 amperes
• D. 13.8 volts at 4 amperes

T7C07

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

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

T4B12

24. What is the result of tuning an FM receiver above or below a signal's frequency?

• A. Sideband inversion
• B. Distortion of the signal's audio
• C. Generation of a heterodyne tone
• D. Change in audio pitch

T0C10

25. Why is duty cycle one of the factors used to determine safe RF radiation exposure levels?

• A. It affects the average exposure to radiation
• B. It takes into account the antenna feed line loss
• C. It affects the peak exposure to radiation
• D. It takes into account the thermal effects of the final amplifier

T3B06

26. What is the formula for converting frequency to approximate wavelength in meters?

• A. Wavelength in meters equals 300 divided by frequency in megahertz
• B. Wavelength in meters equals frequency in hertz divided by 300
• C. Wavelength in meters equals frequency in megahertz divided by 300
• D. Wavelength in meters equals frequency in hertz multiplied by 300

T8A09

27. What is the approximate bandwidth of a VHF repeater FM voice signal?

• A. Between 50 and 125 kHz
• B. About 150 kHz
• C. Less than 500 Hz
• D. Between 10 and 15 kHz

T1B03

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

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

T7A10

29. What device increases the transmitted output power from a transceiver?

• A. An RF power amplifier
• B. A voltage divider
• C. All these choices are correct
• D. An impedance network

T5C13

30. What is the abbreviation for kilohertz?

• A. khz
• B. khZ
• C. KHZ
• D. kHz

T9B08

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

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

T2B08

32. Which of the following applies when two stations transmitting on the same frequency interfere with each other?

• A. The stations should negotiate continued use of the frequency
• B. Both stations should choose another frequency to avoid conflict
• C. Interference is inevitable, so no action is required
• D. Use subaudible tones so both stations can share the frequency

T5A06

33. What is the unit of frequency?

• A. Henry
• B. Tesla
• C. Hertz
• D. Farad

T8B09

34. What causes spin fading of satellite signals?

• A. Circular polarized noise interference radiated from the sun
• B. Doppler shift of the received signal
• C. Rotation of the satellite and its antennas
• D. Interfering signals within the satellite uplink band

T2C05

35. What does the term "traffic" refer to in net operation?

• A. Operation by mobile or portable stations
• B. The number of stations checking in and out of a net
• C. Messages exchanged by net stations
• D. Requests to activate the net by a served agency