Practice Exam

T7C10

1. Why should the outer jacket of coaxial cable be resistant to ultraviolet light?

• A. Ultraviolet and RF signals can mix, causing interference
• B. Ultraviolet resistant jackets prevent harmonic radiation
• C. Ultraviolet light can increase losses in the cable's jacket
• D. Ultraviolet light can damage the jacket and allow water to enter the cable

T4B01

2. What is the effect of excessive microphone gain on SSB transmissions?

• A. All these choices are correct
• B. Frequency instability
• C. Increased SWR
• D. Distorted transmitted audio

T6A07

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

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

T9A01

4. What is a beam antenna?

• A. An antenna built from aluminum I-beams
• B. An antenna that reverses the phase of received signals
• C. An antenna that concentrates signals in one direction
• D. An omnidirectional antenna invented by Clarence Beam

T1F07

5. Which of the following restrictions apply when a non-licensed person is allowed to speak to a foreign station using a station under the control of a licensed amateur operator?

• A. The person must be a U.S. citizen
• B. The foreign station must be in a country with which the U.S. has a third party agreement
• C. The licensed control operator must do the station identification
• D. All these choices are correct

T7D07

6. Which of the following measurements are made using a multimeter?

• A. Voltage and resistance
• B. Impedance and reactance
• C. Signal strength and noise
• D. All these choices are correct

T0A12

7. Which of the following precautions should be taken when measuring high voltages with a voltmeter?

• A. Ensure that the voltmeter is set to the correct frequency
• B. Ensure that the circuit is grounded through the voltmeter
• C. Ensure that the voltmeter and leads are rated for use at the voltages to be measured
• D. Ensure that the voltmeter has very low impedance

T0B09

8. 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 60 Hz radiations from the feed line may increase the SWR
• D. The antenna will not work properly because of induced voltages

T6D03

9. Which of the following is a reason to use shielded wire?

• A. To decrease the resistance of DC power connections
• B. To increase the current carrying capability of the wire
• C. To couple the wire to other signals
• D. To prevent coupling of unwanted signals to or from the wire

T5B07

10. Which is equal to 3.525 MHz?

• A. 35.25 kHz
• B. 3,525,000 kHz
• C. 0.003525 kHz
• D. 3525 kHz

T8A12

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

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

T1E03

12. Who must designate the station control operator?

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

T1B09

13. Why should you not set your transmit frequency to be exactly at the edge of an amateur band or sub-band?

• A. To allow for calibration error in the transmitter frequency display
• B. To allow for transmitter frequency drift
• C. So that modulation sidebands do not extend beyond the band edge
• D. All these choices are correct

T8B12

14. Which of the following is a way to determine whether your satellite uplink power is neither too low nor too high?

• A. Listen for distortion on your downlink signal
• B. Check your signal strength report in the telemetry data
• C. Your signal strength on the downlink should be about the same as the beacon
• D. All these choices are correct

T3A03

15. What antenna polarization is normally used for long-distance CW and SSB contacts on the VHF and UHF bands?

• A. Horizontal
• B. Left-hand circular
• C. Vertical
• D. Right-hand circular

T7A03

16. Which of the following is used to convert a signal from one frequency to another?

• A. Mixer
• B. Inverter
• C. Phase splitter
• D. Amplifier

T2B13

17. What is the purpose of a squelch function?

• A. Eliminate parasitic oscillations in an RF amplifier
• B. Reduce interference from impulse noise
• C. Mute the receiver audio when a signal is not present
• D. Reduce a CW transmitter's key clicks

T2A03

18. What is a common repeater frequency offset in the 70 cm band?

• A. Plus or minus 5 MHz
• B. Plus or minus 600 kHz
• C. Plus or minus 500 kHz
• D. Plus or minus 1 MHz

T1A03

19. 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 required when transmitting emergency messages
• C. It is encouraged
• D. All these choices are correct

T9B07

20. Which of the following is true of PL-259 type coax connectors?

• A. They are a bayonet-type connector
• B. They are watertight
• C. They are commonly used at HF and VHF frequencies
• D. They are preferred for microwave operation

T1D10

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

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

T5C04

22. What is the unit of inductance?

• A. The farad
• B. The henry
• C. The coulomb
• D. The ohm

T5D08

23. What is the current through a 100-ohm resistor connected across 200 volts?

• A. 100 amperes
• B. 20,000 amperes
• C. 2 amperes
• D. 0.5 amperes

T2C03

24. What technique is used to ensure that voice messages containing unusual words are received correctly?

• A. Spell the words using a standard phonetic alphabet
• B. Speak very loudly into the microphone
• C. Send the words by voice and Morse code
• D. All these choices are correct

T6B12

25. What are the names of the electrodes of a bipolar junction transistor?

• A. Signal, bias, power
• B. Emitter, base, collector
• C. Pole one, pole two, output
• D. Input, output, supply

T8C02

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

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

T6C03

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

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

T8D03

28. What kind of data can be transmitted by APRS?

• A. GPS position data
• B. Text messages
• C. Weather data
• D. All these choices are correct

T3B03

29. What are the two components of a radio wave?

• A. Electric and magnetic fields
• B. Ionizing and non-ionizing radiation
• C. Voltage and current
• D. Impedance and reactance

T4A10

30. What function is performed with a transceiver and a digital mode hot spot?

• A. RTTY encoding and decoding without a computer
• B. Communication using digital voice or data systems via the internet
• C. FT8 digital communications via AFSK
• D. High-speed digital communications for meteor scatter

T7B04

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

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

T1C02

32. Who may select a desired call sign under the vanity call sign rules?

• A. Only a licensed amateur who has been licensed continuously for more than 10 years
• B. Only a licensed amateur with an Amateur Extra Class license
• C. Only a licensed amateur with a General or Amateur Extra Class license
• D. Any licensed amateur

T5A03

33. What is the name for the flow of electrons in an electric circuit?

• A. Capacitance
• B. Voltage
• C. Current
• D. Resistance

T3C03

34. What is a characteristic of VHF signals received via auroral backscatter?

• A. They are distorted and signal strength varies considerably
• B. They are generally strongest when your antenna is aimed west
• C. They are often received from 10,000 miles or more
• D. They occur only during winter nighttime hours

T0C09

35. How can you make sure your station stays in compliance with RF safety regulations?

• A. By informing the FCC of any changes made in your station
• B. By re-evaluating the station whenever an item in the transmitter or antenna system is changed
• C. By making sure your antennas have low SWR
• D. All these choices are correct