Practice Exam

G1D05

1. When operating a US station by remote control from outside the country, what license is required of the control operator?

• A. A US operator/primary station license
• B. A license from the foreign country and a special remote station permit from the FCC
• C. Only an appropriate US operator/primary license and a special remote station permit from the FCC
• D. Only a license from the foreign country, as long as the call sign includes identification of portable operation in the US

G9B04

2. What is the radiation pattern of a dipole antenna in free space in a plane containing the conductor?

• A. It is a circle (equal radiation in all directions)
• B. It has a pair of lobes on one side of the antenna and a single lobe on the other side
• C. It is a figure-eight at right angles to the antenna
• D. It is a figure-eight off both ends of the antenna

G7C03

3. What is one reason to use an impedance matching transformer at a transmitter output?

• A. To reduce power supply ripple
• B. To minimize radiation resistance
• C. To present the desired impedance to the transmitter and feed line
• D. To minimize transmitter power output

G8C14

4. Which of the following describes a waterfall display?

• A. Frequency is vertical, signal strength is intensity, time is horizontal
• B. Frequency is horizontal, signal strength is vertical, time is intensity
• C. Frequency is horizontal, signal strength is intensity, time is vertical
• D. Frequency is vertical, signal strength is horizontal, time is intensity

G2E10

5. Which of the following is a way to establish contact with a digital messaging system gateway station?

• A. Send an email to the system control operator
• B. Send QRL in Morse code
• C. Transmit a connect message on the station's published frequency
• D. Respond when the station broadcasts its SSID

G2C04

6. What does the Q signal "QRL?" mean?

• A. "Are you busy?" or "Is this frequency in use?"
• B. "Are you listening only for a specific station?"
• C. "Will you keep the frequency clear?"
• D. "Are you operating full break-in?" or "Can you operate full break-in?"

G9C11

7. What is a beta or hairpin match?

• A. A section of 300-ohm twin-lead transmission line used to match a folded dipole antenna
• B. A series capacitor selected to cancel the inductive reactance of a folded dipole antenna
• C. A 1/4 wavelength section of 75-ohm coax in series with the feed point of a Yagi to provide impedance matching
• D. A shorted transmission line stub placed at the feed point of a Yagi antenna to provide impedance matching

G7A13

8. Which symbol in Figure G7-1 represents a tapped inductor?

• A. Symbol 7
• B. Symbol 6
• C. Symbol 11
• D. Symbol 1

G4D10

9. How close to the lower edge of a band's phone segment should your displayed carrier frequency be when using 3 kHz wide LSB?

• A. At least 1 kHz above the edge of the segment
• B. At least 1 kHz below the edge of the segment
• C. At least 3 kHz above the edge of the segment
• D. At least 3 kHz below the edge of the segment

G2A02

10. Which mode is most commonly used for voice communications on the 160-, 75-, and 40-meter bands?

• A. Upper sideband
• B. Lower sideband
• C. Suppressed sideband
• D. Double sideband

G2B06

11. How can you avoid harmful interference on an apparently clear frequency before calling CQ on CW or phone?

• A. Send the letter "V" in Morse code several times and listen for a response, or say "test" several times and listen for a response
• B. Send "QRL?" on CW, followed by your call sign; or, if using phone, ask if the frequency is in use, followed by your call sign
• C. Listen for 2 minutes before calling CQ
• D. Send "QSY" on CW or if using phone, announce "the frequency is in use," then give your call sign and listen for a response

G2D07

12. Which of the following are examples of the NATO Phonetic Alphabet?

• A. Adam, Boy, Charles, David
• B. Alpha, Bravo, Charlie, Delta
• C. America, Boston, Canada, Denmark
• D. Able, Baker, Charlie, Dog

G9A04

13. What causes reflected power at an antenna's feed point?

• A. Using more transmitter power than the antenna can handle
• B. A difference between feed line impedance and antenna feed point impedance
• C. Feeding the antenna with unbalanced feed line
• D. Operating an antenna at its resonant frequency

G0B10

14. Which of the following is a danger from lead-tin solder?

• A. Lead can contaminate food if hands are not washed carefully after handling the solder
• B. High voltages can cause lead-tin solder to disintegrate suddenly
• C. RF energy can convert the lead into a poisonous gas
• D. Tin in the solder can "cold flow," causing shorts in the circuit

G3B10

15. What is the approximate maximum distance along the Earth's surface normally covered in one hop using the E region?

• A. 180 miles
• B. 1,200 miles
• C. 12,000 miles
• D. 2,500 miles

G6A07

16. What are the operating points for a bipolar transistor used as a switch?

• A. Saturation and cutoff
• B. Peak and valley current points
• C. Enhancement and depletion modes
• D. The active region (between cutoff and saturation)

G8B08

17. Why is it important to know the duty cycle of the mode you are using when transmitting?

• A. To prevent overmodulation
• B. To aid in tuning your transmitter
• C. Some modes have high duty cycles that could exceed the transmitter's average power rating
• D. To allow time for the other station to break in during a transmission

G1C09

18. What is the maximum power limit on the 60-meter band?

• A. ERP of 100 watts PEP with respect to a dipole
• B. ERP of 100 watts PEP with respect to an isotropic antenna
• C. 10 watts RMS
• D. 1500 watts PEP

G0A10

19. What should be done if evaluation shows that a neighbor might experience more than the allowable limit of RF exposure from the main lobe of a directional antenna?

• A. All these choices are correct
• B. Take precautions to ensure that the antenna cannot be pointed in their direction when they are present
• C. Use an antenna with a higher front-to-back ratio
• D. Change to a non-polarized antenna with higher gain

G5A10

20. Which of the following devices can be used for impedance matching at radio frequencies?

• A. A transformer
• B. A length of transmission line
• C. All these choices are correct
• D. A Pi-network

G4A02

21. What is the benefit of using the opposite or "reverse" sideband when receiving CW?

• A. It may be possible to reduce or eliminate interference from other signals
• B. Interference from impulse noise will be eliminated
• C. More stations can be accommodated within a given signal passband
• D. Accidental out-of-band operation can be prevented

G7B07

22. Which of the following are basic components of a sine wave oscillator?

• A. A filter and an amplifier operating in a feedback loop
• B. An amplifier and a divider
• C. A circulator and a filter operating in a feed-forward loop
• D. A frequency multiplier and a mixer

G5B02

23. How does the total current relate to the individual currents in a circuit of parallel resistors?

• A. It equals the sum of the currents through each branch
• B. It decreases as more parallel branches are added to the circuit
• C. It equals the average of the branch currents
• D. It is the sum of the reciprocal of each individual voltage drop

G1E07

24. In what part of the 2.4 GHz band may an amateur station communicate with non-licensed Wi-Fi stations?

• A. Channels 1 through 4
• B. Anywhere in the band
• C. No part
• D. Channels 42 through 45

G3A07

25. At what point in the solar cycle does the 20-meter band usually support worldwide propagation during daylight hours?

• A. Only at the minimum point
• B. Only at the maximum point
• C. At the summer solstice
• D. At any point

G8A04

26. What emission is produced by a reactance modulator connected to a transmitter RF amplifier stage?

• A. Pulse modulation
• B. Phase modulation
• C. Amplitude modulation
• D. Multiplex modulation

G6B02

27. What is meant by the term MMIC?

• A. Monolithic Microwave Integrated Circuit
• B. Multi-Mode Integrated Circuit
• C. Mode Modulated Integrated Circuit
• D. Metal Monolayer Integrated Circuit

G5C08

28. What is the equivalent capacitance of two 5.0-nanofarad capacitors and one 750-picofarad capacitor connected in parallel?

• A. 1,733 picofarads
• B. 576.9 nanofarads
• C. 10.750 nanofarads
• D. 3,583 picofarads

G4E11

29. What precaution should be taken when connecting a solar panel to a lithium iron phosphate battery?

• A. Ensure the battery is placed terminals-up
• B. Ground the solar panel outer metal framework
• C. The solar panel must have a charge controller
• D. A series resistor must be in place

G4C03

30. What sound is heard from an audio device experiencing RF interference from a single sideband phone transmitter?

• A. Clearly audible speech
• B. On-and-off humming or clicking
• C. Distorted speech
• D. A steady hum whenever the transmitter is on the air

G3C05

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

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

G4B13

32. Which of the following can be measured with an antenna analyzer?

• A. Power output from a transmitter
• B. Gain of a directional antenna
• C. Front-to-back ratio of an antenna
• D. Impedance of coaxial cable

G1B02

33. With which of the following conditions must beacon stations comply?

• A. All these choices are correct
• B. The frequency must be posted on the internet or published in a national periodical
• C. The frequency must be coordinated with the National Beacon Organization
• D. No more than one beacon station may transmit in the same band from the same station location

G1A05

34. On which of the following frequencies are General class licensees prohibited from operating as control operator?

• A. 7.125 MHz to 7.175 MHz
• B. 21.275 MHz to 21.300 MHz
• C. 28.000 MHz to 28.025 MHz
• D. All of the above

G9D07

35. Which of the following describes a log-periodic antenna?

• A. Gain varies logarithmically as a function of frequency
• B. SWR varies periodically as a function of boom length
• C. Impedance varies periodically as a function of frequency
• D. Element length and spacing vary logarithmically along the boom