Practice Exam

T2B13

1. What is the purpose of a squelch function?

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

T7B01

2. What can you do if you are told your FM handheld or mobile transceiver is over-deviating?

• A. Talk farther away from the microphone
• B. Let the transceiver cool off
• C. Talk louder into the microphone
• D. Change to a higher power level

T0C03

3. How does the allowable power density for RF safety change if duty cycle changes from 100 percent to 50 percent?

• A. It increases by a factor of 2
• B. There is no adjustment allowed for lower duty cycle
• C. It increases by a factor of 3
• D. It decreases by 50 percent

T8C05

4. What is a grid locator?

• A. An instrument for radio direction finding
• B. A letter-number designator assigned to an azimuth and elevation
• C. A letter-number designator assigned to a geographic location
• D. An instrument for neutralizing a final amplifier

T7D04

5. Which instrument is used to measure electric current?

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

T9B10

6. What is the electrical difference between RG-58 and RG-213 coaxial cable?

• A. RG-58 cable has two shields
• B. RG-58 cable can handle higher power levels
• C. RG-213 cable has less loss at a given frequency
• D. There is no significant difference between the two types

T1F08

7. What is the definition of third party communications?

• A. Operation when the transmitting equipment is licensed to a person other than the control operator
• B. Amateur radio communications where three stations are in communications with one another
• C. Temporary authorization for an unlicensed person to transmit on the amateur bands for technical experiments
• D. A message from a control operator to another amateur station control operator on behalf of another person

T5A08

8. Which of the following is a good electrical insulator?

• A. Mercury
• B. Copper
• C. Glass
• D. Aluminum

T0B06

9. What is the minimum safe distance from a power line to allow when installing an antenna?

• A. Add the height of the antenna to the height of the power line and multiply by a factor of 1.5
• B. Enough so that if the antenna falls, no part of it can come closer than 10 feet to the power wires
• C. The height of the power line above ground
• D. 1/2 wavelength at the operating frequency

T5B13

10. Which is equal to 2425 MHz?

• A. 2425 GHz
• B. 2.425 GHz
• C. 24.25 GHz
• D. 0.002425 GHz

T6D08

11. Which of the following is combined with an inductor to make a resonant circuit?

• A. Potentiometer
• B. Capacitor
• C. Resistor
• D. Zener diode

T1E09

12. Which of the following are required for remote control operation?

• A. The control operator must be at the control point
• B. A control operator is required at all times
• C. All these choices are correct
• D. The control operator must indirectly manipulate the controls

T1C04

13. 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. Nothing; there is no such requirement
• C. Fine and suspension of operator license
• D. Revocation of the station license or suspension of the operator license

T6A07

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

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

T2A12

15. What should you do before calling CQ?

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

T5D02

16. What formula is used to calculate voltage in a circuit?

• A. E= I + R
• B. E= I / R
• C. E= I x R
• D. E = I - R

T6B01

17. Which is true about forward voltage drop in a diode?

• A. It indicates that the diode is defective
• B. It is lower in some diode types than in others
• C. It is proportional to peak inverse voltage
• D. It has no impact on the voltage delivered to the load

T1A03

18. 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

T8A08

19. What is the approximate bandwidth of a typical single sideband (SSB) voice signal?

• A. 3 kHz
• B. 6 kHz
• C. 15 kHz
• D. 1 kHz

T0A03

20. In the United States, what circuit does black wire insulation indicate in a three-wire 120 V cable?

• A. Black insulation is never used
• B. Equipment ground
• C. Hot
• D. Neutral

T1B01

21. Which of the following frequency ranges are available for phone operation by Technician licensees?

• A. 28.100 MHz to 28.300 MHz
• B. 28.500 MHz to 28.600 MHz
• C. 28.300 MHz to 28.500 MHz
• D. 28.050 MHz to 28.150 MHz

T3C02

22. What is a characteristic of HF communication compared with communications on VHF and higher frequencies?

• A. Long-distance ionospheric propagation is far more common on HF
• B. There is less atmospheric interference (static) on HF
• C. HF antennas are generally smaller
• D. HF accommodates wider bandwidth signals

T9A09

23. What is the approximate length, in inches, of a half-wavelength 6 meter dipole antenna?

• A. 50
• B. 236
• C. 6
• D. 112

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. Change in audio pitch
• D. Generation of a heterodyne tone

T7A05

25. What is the name of a circuit that generates a signal at a specific frequency?

• A. Low-pass filter
• B. Phase modulator
• C. Reactance modulator
• D. Oscillator

T8B10

26. What is a LEO satellite?

• A. A satellite in low earth orbit
• B. A satellite in low energy operation mode
• C. A sun synchronous satellite
• D. A highly elliptical orbit satellite

T5C11

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

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

T6C07

28. What is component 8 in figure T-2?

• A. Regulator IC
• B. Resistor
• C. Light emitting diode
• D. Inductor

T4A10

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

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

T8D06

30. What does the abbreviation "PSK" mean?

• A. Packet Short Keying
• B. Pulse Shift Keying
• C. Phase Shift Keying
• D. Phased Slide Keying

T7C10

31. 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

T3A03

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

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

T1D04

33. 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 the music produces no spurious emissions
• C. When transmissions are limited to less than three minutes per hour
• D. When incidental to an authorized retransmission of manned spacecraft communications

T3B10

34. What frequency range is referred to as HF?

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

T2C03

35. 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. Send the words by voice and Morse code
• C. Speak very loudly into the microphone
• D. All these choices are correct