Practice Exam

G3B04

1. Which of the following is a way to determine current propagation on a desired band from your station?

• A. All these choices are correct
• B. Send a series of dots and listen for echoes
• C. Check the A-index
• D. Use a network of automated receiving stations on the internet to see where your transmissions are being received

G7B08

2. How is the efficiency of an RF power amplifier determined?

• A. Add the RF input power to the DC output power
• B. Multiply the RF input power by the reciprocal of the RF output power
• C. Divide the RF output power by the DC input power
• D. Divide the DC input power by the DC output power

G2C04

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

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

G4A06

4. What is the purpose of an antenna tuner?

• A. Reduce the power dissipation in the feedline to the antenna
• B. All these choices are correct
• C. Increase power transfer from the transmitter to the feed line
• D. Reduce the SWR in the feed line to the antenna

G5C11

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

• A. 70 millihenries
• B. 1,000 millihenries
• C. 7 millihenries
• D. 14.3 millihenries

G3C10

6. What is near vertical incidence skywave (NVIS) propagation?

• A. Long path HF propagation at sunrise and sunset
• B. Short distance MF or HF propagation at high elevation angles
• C. Propagation near the MUF
• D. Double hop propagation near the LUF

G5B12

7. What is the RMS voltage across a 50-ohm dummy load dissipating 1200 watts?

• A. 346 volts
• B. 173 volts
• C. 692 volts
• D. 245 volts

G0B07

8. Which of these choices should be observed when climbing a tower using a safety harness?

• A. All these choices are correct
• B. Ensure that all heavy tools are securely fastened to the harness
• C. Always hold on to the tower with one hand
• D. Confirm that the harness is rated for the weight of the climber and that it is within its allowable service life

G0A12

9. What stations are subject to the FCC rules on RF exposure?

• A. Only stations with antennas lower than one wavelength above the ground
• B. Only stations transmitting more than 500 watts PEP
• C. All commercial stations; amateur radio stations are exempt
• D. All stations with a time-averaged transmission of more than one milliwatt

G7A10

10. Which symbol in figure G7-1 represents a Zener diode?

• A. Symbol 5
• B. Symbol 11
• C. Symbol 4
• D. Symbol 1

G2E11

11. What is the primary purpose of an Amateur Radio Emergency Data Network (AREDN) mesh network?

• A. To provide real time propagation data by monitoring amateur radio transmissions worldwide
• B. To provide DX spotting reports to aid contesters and DXers
• C. To provide high-speed data services during an emergency or community event
• D. To provide FM repeater coverage in remote areas

G9A08

12. If the SWR on an antenna feed line is 5:1, and a matching network at the transmitter end of the feed line is adjusted to present a 1:1 SWR to the transmitter, what is the resulting SWR on the feed line?

• A. 1:1
• B. Between 1:1 and 5:1 depending on the reflected power at the transmitter
• C. 5:1
• D. Between 1:1 and 5:1 depending on the characteristic impedance of the line

G2A09

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

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

G2B05

14. When selecting an SSB transmitting frequency, what minimum separation should be used to minimize interference to stations on adjacent frequencies?

• A. Approximately 6 kHz
• B. 5 Hz to 50 Hz
• C. 2 kHz to 3 kHz
• D. 150 Hz to 500 Hz

G3A08

15. How can a geomagnetic storm affect HF propagation?

• A. Improve high-latitude HF propagation
• B. Improve ground wave propagation
• C. Degrade ground wave propagation
• D. Degrade high-latitude HF propagation

G4E02

16. What is the purpose of a corona ball on an HF mobile antenna?

• A. To narrow the operating bandwidth of the antenna
• B. To reduce the chance of damage if the antenna should strike an object
• C. To reduce RF voltage discharge from the tip of the antenna while transmitting
• D. To increase the "Q" of the antenna

G4B06

17. What is an advantage of a digital multimeter as compared to an analog multimeter?

• A. Higher precision
• B. Faster response
• C. Less prone to overload
• D. Better for measuring computer circuits

G1B09

18. On what HF frequencies are automatically controlled beacons permitted?

• A. On any frequency if power is less than 1 watt
• B. On any frequency if transmissions are in Morse code
• C. 28.20 MHz to 28.30 MHz
• D. 21.08 MHz to 21.09 MHz

G6A05

19. What is the approximate forward threshold voltage of a silicon junction diode?

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

G4D07

20. How much must the power output of a transmitter be raised to change the S meter reading on a distant receiver from S8 to S9?

• A. Approximately 2 times
• B. Approximately 4 times
• C. Approximately 1.5 times
• D. Approximately 8 times

G9D02

21. What is the feed point impedance of an end-fed half-wave antenna?

• A. Approximately 50 ohms
• B. Approximately 300 ohms
• C. Very high
• D. Very low

G1C02

22. What is the maximum transmitter power an amateur station may use on the 12-meter band?

• A. 50 watts PEP output
• B. 200 watts PEP output
• C. An effective radiated power equivalent to 100 watts from a half-wave dipole
• D. 1500 watts PEP output

G8A11

23. What is the modulation envelope of an AM signal?

• A. The carrier frequency that contains the signal
• B. The bandwidth of the modulated signal
• C. The waveform created by connecting the peak values of the modulated signal
• D. Spurious signals that envelop nearby frequencies

G6B02

24. What is meant by the term MMIC?

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

G1D04

25. Who must observe the administration of a Technician class license examination?

• A. At least three Volunteer Examiners of Technician class
• B. At least two Volunteer Examiners of Technician class or higher
• C. At least three Volunteer Examiners of General class or higher
• D. At least two Volunteer Examiners of General class or higher

G5A10

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

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

G9C02

27. What is the approximate length of the driven element of a Yagi antenna?

• A. 1/4 wavelength
• B. 1 wavelength
• C. 3/4 wavelength
• D. 1/2 wavelength

G7C10

28. What is an advantage of using I-Q modulation with software-defined radios (SDRs)?

• A. The need for high resolution analog-to-digital converters is eliminated
• B. Automatic conversion of the signal from digital to analog
• C. Minimum detectible signal level is reduced
• D. All types of modulation can be created with appropriate processing

G9B09

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

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

G4C02

30. Which of the following could be a cause of interference covering a wide range of frequencies?

• A. Not using a balun or line isolator to feed balanced antennas
• B. Lack of rectification of the transmitter's signal in power conductors
• C. Using a balun to feed an unbalanced antenna
• D. Arcing at a poor electrical connection

G1A08

31. Which HF bands have segments exclusively allocated to Amateur Extra licensees?

• A. 60 meters, 30 meters, 17 meters, and 12 meters
• B. All HF bands
• C. All HF bands except 160 meters and 10 meters
• D. 80 meters, 40 meters, 20 meters, and 15 meters

G1E08

32. What is the maximum PEP output allowed for spread spectrum transmissions?

• A. 1500 watts
• B. 100 watts
• C. 100 milliwatts
• D. 10 watts

G8B13

33. Which of the following is an odd-order intermodulation product of frequencies F1 and F2?

• A. 2F1-F2
• B. 3F1-F2
• C. All these choices are correct
• D. 5F1-3F2

G8C16

34. Which of the following provide digital voice modes?

• A. DMR, D-STAR, and SystemFusion
• B. FT8, FT4, and FST4
• C. WSPR, MFSK16, and EasyPAL
• D. Winlink, PACTOR II, and PACTOR III

G2D08

35. Why do many amateurs keep a station log?

• A. To help with a reply if the FCC requests information about your station
• B. The log provides evidence of operation needed to renew a license without retest
• C. The FCC requires a log of all international contacts
• D. The FCC requires a log of all international third-party traffic