Practice Exam

G6A05

1. What is the approximate junction threshold voltage of a conventional silicon diode?

• A. 0.1 volt
• B. 0.3 volts
• C. 0.7 volts
• D. 1.0 volts

G4A13

2. What is one reason to use the attenuator function that is present on many HF transceivers?

• A. To reduce the transmitter power when driving a linear amplifier
• B. To reduce power consumption when operating from batteries
• C. To slow down received CW signals for better copy
• D. To reduce signal overload due to strong incoming signals

G4C13

3. Why must the metal enclosure of every item of station equipment be grounded?

• A. It prevents a blown fuse in the event of an internal short circuit
• B. It ensures that hazardous voltages cannot appear on the chassis
• C. It prevents signal overload
• D. It ensures that the neutral wire is grounded

G7A02

4. Which of the following components are used in a power supply filter network?

• A. Diodes
• B. Transformers and transducers
• C. Quartz crystals
• D. Capacitors and inductors

G9D11

5. Which of the following is a disadvantage of multiband antennas?

• A. They must be fed with open wire line
• B. They must be used with an antenna tuner
• C. They present low impedance on all design frequencies
• D. They have poor harmonic rejection

G4E09

6. What is the approximate open-circuit voltage from a fully illuminated silicon photovoltaic cell?

• A. 1.38 VDC
• B. 0.02 VDC
• C. 0.5 VDC
• D. 0.2 VDC

G9A07

7. What must be done to prevent standing waves on an antenna feed line?

• A. The antenna feed point impedance must be matched to the characteristic impedance of the feed line
• B. The feed line must be cut to a length equal to an even number of physical half wavelengths
• C. The feed line must be cut to a length equal to an odd number of electrical quarter wavelengths
• D. The antenna feed point must be at DC ground potential

G8A02

8. What is the name of the process that changes the phase angle of an RF signal to convey information?

• A. Phase modulation
• B. Phase inversion
• C. Phase convolution
• D. Phase transformation

G7C13

9. What term specifies a filter's maximum ability to reject signals outside its passband?

• A. Insertion loss
• B. Ultimate rejection
• C. Rolloff
• D. Notch depth

G3B04

10. What is a reliable way to determine if the MUF is high enough to support skip propagation between your station and a distant location on frequencies between 14 and 30 MHz?

• A. Check the strength of signals in the MF AM broadcast band
• B. Listen for signals from an international beacon in the frequency range you plan to use
• C. Check the strength of TV signals from western Europe
• D. Send a series of dots on the band and listen for echoes from your signal

G5C11

11. What is the inductance of a 20 millihenry inductor connected in series with a 50 millihenry inductor?

• A. 14.3 millihenries
• B. 1000 millihenries
• C. 70 millihenries
• D. 0.07 millihenries

G2E07

12. What segment of the 80-meter band is most commonly used for digital transmissions?

• A. 3700 - 3750 kHz
• B. 3500 - 3525 kHz
• C. 3775 - 3825 kHz
• D. 3570 - 3600 kHz

G3C05

13. Why is long-distance communication on the 40-meter, 60-meter, 80-meter, and 160-meter bands more difficult during the day?

• A. The D layer absorbs signals at these frequencies during daylight hours
• B. The E layer is unstable during daylight hours
• C. The F layer is unstable during daylight hours
• D. The F layer absorbs signals at these frequencies during daylight hours

G8C11

14. How are the two separate frequencies of a Frequency Shift Keyed (FSK) signal identified?

• A. Dot and dash
• B. Mark and space
• C. High and low
• D. On and off

G8B07

15. What is the frequency deviation for a 12.21 MHz reactance modulated oscillator in a 5 kHz deviation, 146.52 MHz FM phone transmitter?

• A. 5 kHz
• B. 101.75 Hz
• C. 60 kHz
• D. 416.7 Hz

G2A09

16. Why do most amateur stations use lower sideband on the 160-meter, 75-meter, and 40-meter bands?

• A. Lower sideband is more efficient than upper sideband at these frequencies
• B. It is good amateur practice
• C. Lower sideband is the only sideband legal on these frequency bands
• D. Because it is fully compatible with an AM detector

G1A15

17. What portion of the 10-meter band is available for repeater use?

• A. The entire band
• B. The portion between 28.1 MHz and 28.2 MHz
• C. The portion between 28.3 MHz and 28.5 MHz
• D. The portion above 29.5 MHz

G5B04

18. How many watts of electrical power are used by a 12 VDC light bulb that draws 0.2 amperes?

• A. 24 watts
• B. 2.4 watts
• C. 60 watts
• D. 6 watts

G4B04

19. What signal source is connected to the vertical input of an oscilloscope when checking the RF envelope pattern of a transmitted signal?

• A. The transmitter balanced mixer output
• B. The attenuated RF output of the transmitter
• C. An external RF oscillator
• D. The local oscillator of the transmitter

G4D09

20. What frequency range is occupied by a 3 kHz USB signal with the displayed carrier frequency set to 14.347 MHz?

• A. 14.347 to 14.350 MHz
• B. 14.347 to 14.647 MHz
• C. 14.3455 to 14.3485 MHz
• D. 14.344 to 14.347 MHz

G9C05

21. How does increasing boom length and adding directors affect a Yagi antenna?

• A. Front-to-back ratio decreases
• B. Gain increases
• C. Beamwidth increases
• D. Front-to-side ratio decreases

G2C10

22. What does the Q signal "QRN" mean?

• A. Send more slowly
• B. Zero beat my signal
• C. Stop sending
• D. I am troubled by static

G1C03

23. What is the maximum bandwidth permitted by FCC rules for Amateur Radio stations transmitting on USB frequencies in the 60-meter band?

• A. 2.8 kHz
• B. 5.6 kHz
• C. 1.8 kHz
• D. 3 kHz

G6B09

24. Which of the following is a characteristic of a liquid crystal display?

• A. It has relatively short lifetime
• B. It consumes relatively high power
• C. It utilizes ambient or back lighting
• D. It offers a wide dynamic range

G5A03

25. Which of the following causes opposition to the flow of alternating current in an inductor?

• A. Conductance
• B. Reluctance
• C. Reactance
• D. Admittance

G1B05

26. Which of the following one-way transmissions are permitted?

• A. Regular transmissions offering equipment for sale, if intended for Amateur Radio use
• B. Transmissions necessary to assist learning the International Morse code
• C. All these choices are correct
• D. Unidentified test transmissions of less than one minute in duration

G1D06

27. When must you add the special identifier "AG" after your call sign if you are a Technician class licensee and have a Certificate of Successful Completion of Examination (CSCE) for General class operator privileges, but the FCC has not yet posted your upgrade on its website?

• A. Whenever you operate using Technician frequency privileges
• B. Whenever you operate using General class frequency privileges
• C. A special identifier is not required if your General class license application has been filed with the FCC
• D. Whenever you operate on any amateur frequency

G0B12

28. What is the purpose of a power supply interlock?

• A. To ensure that dangerous voltages are removed if the cabinet is opened
• B. To shut off the power supply if too much voltage is produced
• C. To prevent unauthorized changes to the circuit that would void the manufacturer's warranty
• D. To shut down the unit if it becomes too hot

G7B03

29. Which of the following describes the function of a two-input AND gate?

• A. Output is low when either or both inputs are high
• B. Output is low only when both inputs are high
• C. Output is high when either or both inputs are low
• D. Output is high only when both inputs are high

G9B09

30. Which of the following is an advantage of a horizontally polarized as compared to a vertically polarized HF antenna?

• A. Lower ground reflection losses
• B. Lower radiation resistance
• C. Lower feed-point impedance
• D. Shorter radials

G2D05

31. Which of the following is a good way to indicate on a clear frequency in the HF phone bands that you are looking for a contact with any station?

• A. Transmit an unmodulated carried for approximately 10 seconds, followed by "this is" and your call sign, and pause to listen -- repeat as necessary
• B. Repeat "CQ" a few times, followed by "this is," then your call sign a few times, then pause to listen, repeat as necessary
• C. Sign your call sign once, followed by the words "listening for a call" -- if no answer, change frequency and repeat
• D. Say "QTC" followed by "this is" and your call sign -- if no answer, change frequency and repeat

G0A06

32. What precaution should be taken when installing a ground-mounted antenna?

• A. It should be limited to 10 feet in height
• B. It should not be installed in a wet area
• C. It should be installed such that it is protected against unauthorized access
• D. It should not be installed higher than you can reach

G1E01

33. Which of the following would disqualify a third party from participating in stating a message over an amateur station?

• A. The third party is not a U.S. citizen
• B. The third party is speaking in a language other than English
• C. The third party is a licensed amateur
• D. The third party's amateur license has been revoked and not reinstated

G2B02

34. What is the first thing you should do if you are communicating with another amateur station and hear a station in distress break in?

• A. Continue your communication because you were on the frequency first
• B. Acknowledge the station in distress and determine what assistance may be needed
• C. Change to a different frequency
• D. Immediately cease all transmissions

G3A12

35. What does the K-index indicate?

• A. The short-term stability of Earth's magnetic field
• B. The stability of the sun's magnetic field
• C. The solar radio flux at Boulder, Colorado
• D. The relative position of sunspots on the surface of the sun