Practice Exam

T4A03

1. Why are short, heavy-gauge wires used for a transceiver's DC power connection?

• A. To minimize voltage drop when transmitting
• B. To avoid RF interference
• C. To provide a good counterpoise for the antenna
• D. All these choices are correct

T8A02

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

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

T1E03

3. Who must designate the station control operator?

• A. Any licensed operator
• B. The FCC
• C. The station licensee
• D. The frequency coordinator

T3A06

4. What is the meaning of the term "picket fencing"?

• A. Alternating transmissions during a net operation
• B. Local vs long-distance communications
• C. A type of ground system used with vertical antennas
• D. Rapid flutter on mobile signals due to multipath propagation

T8B06

5. 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

T6A10

6. Which of the following battery chemistries is rechargeable?

• A. All these choices are correct
• B. Lead-acid
• C. Lithium-ion
• D. Nickel-metal hydride

T5B05

7. Which is equal to 500 milliwatts?

• A. 0.5 watts
• B. 0.02 watts
• C. 5 watts
• D. 50 watts

T3B05

8. What is the relationship between wavelength and frequency?

• A. Wavelength gets longer as frequency increases
• B. Wavelength and frequency increase as path length increases
• C. Wavelength and frequency are unrelated
• D. Wavelength gets shorter as frequency increases

T1A03

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

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

T5D07

10. What is the current in a circuit with an applied voltage of 120 volts and a resistance of 80 ohms?

• A. 9600 amperes
• B. 1.5 amperes
• C. 0.667 amperes
• D. 200 amperes

T1D07

11. What types of amateur stations can automatically retransmit the signals of other amateur stations?

• A. Auxiliary, beacon, or Earth stations
• B. Repeater, auxiliary, or space stations
• C. Beacon, repeater, or space stations
• D. Earth, repeater, or space stations

T1C11

12. If your license has expired and is still within the allowable grace period, may you continue to transmit on the amateur radio bands?

• A. No, you must wait until the license has been renewed
• B. Yes, as soon as you apply for renewal
• C. Yes, for up to two years
• D. Yes, for up to one year

T2B05

13. What would cause your FM transmission audio to be distorted on voice peaks?

• A. Your repeater offset is inverted
• B. You need to talk louder
• C. Your transmit power is too high
• D. You are talking too loudly

T9A03

14. Which of the following describes a simple dipole oriented parallel to Earth's surface?

• A. A ground-wave antenna
• B. A travelling-wave antenna
• C. A horizontally polarized antenna
• D. A vertically polarized antenna

T7A07

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

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

T8D02

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

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

T4B04

17. What is a way to enable quick access to a favorite frequency or channel on your transceiver?

• A. Use the scan mode to select the desired frequency
• B. Enable the VOX
• C. Store it in a memory channel
• D. Enable the frequency offset

T5A01

18. Electrical current is measured in which of the following units?

• A. Amperes
• B. Ohms
• C. Volts
• D. Watts

T0C11

19. What is the definition of duty cycle during the averaging time for RF exposure?

• A. The percentage of time that a transmitter is not transmitting
• B. The difference between the lowest power output and the highest power output of a transmitter
• C. The percentage of time that a transmitter is transmitting
• D. The difference between the PEP and average power output of a transmitter

T0B09

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

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

T7D08

21. Which of the following types of solder should not be used for radio and electronic applications?

• A. Acid-core solder
• B. Tin-copper solder
• C. Lead-tin solder
• D. Rosin-core solder

T7C05

22. Why do most solid-state transmitters reduce output power as SWR increases beyond a certain level?

• A. To protect the output amplifier transistors
• B. Because power supplies cannot supply enough current at high SWR
• C. To comply with FCC rules on spectral purity
• D. To lower the SWR on the transmission line

T2C09

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

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

T0A09

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

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

T1F04

25. What language may you use for identification when operating in a phone sub-band?

• A. English, French, or Spanish
• B. Any language recognized by the United Nations
• C. English
• D. Any language recognized by the ITU

T6C02

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

• A. Battery
• B. Resistor
• C. Transistor
• D. Connector

T7B11

27. What is a symptom of RF feedback in a transmitter or transceiver?

• A. The transmitter will not stay on the desired frequency
• B. Frequent blowing of power supply fuses
• C. Reports of garbled, distorted, or unintelligible voice transmissions
• D. Excessive SWR at the antenna connection

T3C05

28. Which of the following effects may allow radio signals to travel beyond obstructions between the transmitting and receiving stations?

• A. Quantum tunneling
• B. Faraday rotation
• C. Doppler shift
• D. Knife-edge diffraction

T5C13

29. What is the abbreviation for kilohertz?

• A. KHZ
• B. kHz
• C. khZ
• D. khz

T6B05

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

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

T8C01

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

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

T2A10

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

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

T9B11

33. 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. 50-ohm flexible coax
• D. Multi-conductor unbalanced cable

T6D10

34. What is the function of component 2 in figure T-1?

• A. Convert electrical energy into radio waves
• B. Supply electrical energy
• C. Give off light when current flows through it
• D. Control the flow of current

T1B10

35. Where may SSB phone be used in amateur bands above 50 MHz?

• A. On any band if the power is limited to 25 watts
• B. In at least some segment of all these bands
• C. Only in sub-bands allocated to General class or higher licensees
• D. Only on repeaters