Practice Exam

G6B03

1. Which of the following is an advantage of CMOS integrated circuits compared to TTL integrated circuits?

• A. Low power consumption
• B. Better suited for power supply regulation
• C. High power handling capability
• D. Better suited for RF amplification

G8C11

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

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

G8A13

3. What is a link budget?

• A. The sum of antenna gains minus system losses
• B. The financial costs associated with operating a radio link
• C. The sum of transmit power and antenna gains minus system losses as seen at the receiver
• D. The difference between transmit power and receiver sensitivity

G2B03

4. What is good amateur practice if propagation changes during a contact creating interference from other stations using the frequency?

• A. Decrease power and continue to transmit
• B. Switch to the opposite sideband
• C. Advise the interfering stations that you are on the frequency and that you have priority
• D. Attempt to resolve the interference problem with the other stations in a mutually acceptable manner

G1C01

5. What is the maximum transmitter power an amateur station may use on 10.140 MHz?

• A. 1500 watts PEP output
• B. 2000 watts PEP output
• C. 1000 watts PEP output
• D. 200 watts PEP output

G2A12

6. What control is typically adjusted for proper ALC setting on a single sideband transceiver?

• A. RF clipping level
• B. Transmit audio or microphone gain
• C. Antenna inductance or capacitance
• D. Attenuator level

G9C09

7. In free space, how does the gain of two three-element, horizontally polarized Yagi antennas spaced vertically 1/2 wavelength apart typically compare to the gain of a single three-element Yagi?

• A. Approximately 3 dB higher
• B. Approximately 1.5 dB higher
• C. Approximately 6 dB higher
• D. Approximately 9 dB higher

G4C08

8. Which of the following would reduce RF interference caused by common-mode current on an audio cable?

• A. Ground the center conductor of the audio cable causing the interference
• B. Add an additional insulating jacket to the cable
• C. Place a ferrite choke on the cable
• D. Connect the center conductor to the shield of all cables to short circuit the RFI signal

G4B10

9. Which of the following can be determined with a directional wattmeter?

• A. Radio wave propagation
• B. RF interference
• C. Standing wave ratio
• D. Antenna front-to-back ratio

G0A11

10. What precaution should be taken if you install an indoor transmitting antenna?

• A. Make sure the antenna is properly shielded
• B. Locate the antenna close to your operating position to minimize feed-line radiation
• C. Position the antenna along the edge of a wall to reduce parasitic radiation
• D. Make sure that MPE limits are not exceeded in occupied areas

G7B01

11. What is the purpose of neutralizing an amplifier?

• A. To eliminate self-oscillations
• B. To cut off the final amplifier during standby periods
• C. To limit the modulation index
• D. To keep the carrier on frequency

G3C09

12. What type of propagation allows signals to be heard in the transmitting station's skip zone?

• A. Scatter
• B. Faraday rotation
• C. Short-path
• D. Chordal hop

G4E08

13. In what configuration are the individual cells in a solar panel connected together?

• A. Shunt
• B. Series-parallel
• C. Full-wave bridge
• D. Bypass

G4D07

14. 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 1.5 times
• B. Approximately 2 times
• C. Approximately 8 times
• D. Approximately 4 times

G0B02

15. According to the National Electrical Code, what is the minimum wire size that may be used safely for wiring with a 20-ampere circuit breaker?

• A. AWG number 8
• B. AWG number 12
• C. AWG number 16
• D. AWG number 20

G9D05

16. What is an advantage of vertically stacking horizontally polarized Yagi antennas?

• A. It narrows the main lobe in azimuth
• B. It allows simultaneous vertical and horizontal polarization
• C. It allows quick selection of vertical or horizontal polarization
• D. It narrows the main lobe in elevation

G5A12

17. What occurs in an LC circuit at resonance?

• A. The circuit radiates all its energy in the form of radio waves
• B. Inductive reactance and capacitive reactance cancel
• C. Current and voltage are equal
• D. Resistance is cancelled

G2E14

18. What could be wrong if you cannot decode an RTTY or other FSK signal even though it is apparently tuned in properly?

• A. You may be listening on the wrong sideband
• B. All these choices are correct
• C. The mark and space frequencies may be reversed
• D. You may have selected the wrong baud rate

G1A07

19. On which amateur frequencies in the 10-meter band may stations with a General class control operator transmit CW emissions?

• A. The entire band
• B. 28.000 MHz to 28.300 MHz only
• C. 28.000 MHz to 28.025 MHz only
• D. 28.025 MHz to 28.300 MHz only

G1E01

20. Which of the following would disqualify a third party from participating in sending a message via an amateur station?

• A. All these choices are correct
• B. The third party's amateur license has been revoked and not reinstated
• C. The third party is not a US citizen
• D. The third party is speaking in a language other than English

G3A11

21. How long does it take a coronal mass ejection to affect radio propagation on Earth?

• A. 15 hours to several days
• B. 14 days
• C. 28 days
• D. 4 to 8 minutes

G2C02

22. What should you do if a CW station sends "QRS?"

• A. Repeat everything twice
• B. Change frequency
• C. Increase your power
• D. Send slower

G1D07

23. Volunteer Examiners are accredited by what organization?

• A. The Federal Communications Commission
• B. The Wireless Telecommunications Bureau
• C. The Universal Licensing System
• D. A Volunteer Examiner Coordinator

G4A11

24. Why should the ALC system be inactive when transmitting AFSK data signals?

• A. ALC will invert the modulation of the AFSK mode
• B. When using digital modes, too much ALC activity can cause the transmitter to overheat
• C. All these choices are correct
• D. The ALC action distorts the signal

G1B02

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

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

G7C04

26. How is a product detector used?

• A. Used in a single sideband receiver to extract the modulated signal
• B. Used in an FM receiver to filter out unwanted sidebands
• C. Used in transmitter to perform frequency multiplication
• D. Used in test gear to detect spurious mixing products

G8B09

27. Why is it good to match receiver bandwidth to the bandwidth of the operating mode?

• A. It results in the best signal-to-noise ratio
• B. It improves impedance matching of the antenna
• C. It minimizes power consumption in the receiver
• D. It is required by FCC rules

G9A01

28. Which of the following factors determine the characteristic impedance of a parallel conductor feed line?

• A. The distance between the centers of the conductors and the length of the line
• B. The radius of the conductors and the frequency of the signal
• C. The frequency of the signal and the length of the line
• D. The distance between the centers of the conductors and the radius of the conductors

G6A08

29. Which of the following is characteristic of low voltage ceramic capacitors?

• A. High stability
• B. Comparatively low cost
• C. High capacitance for given volume
• D. Tight tolerance

G7A10

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

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

G9B03

31. Which of the following best describes the radiation pattern of a quarter-wave ground-plane vertical antenna?

• A. Hemispherical
• B. Omnidirectional in azimuth
• C. Isotropic
• D. Bi-directional in azimuth

G5B02

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

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

G2D05

33. Which of the following indicates that you are looking for an HF contact with any station?

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

G5C11

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

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

G3B12

35. Which of the following is typical of the lower HF frequencies during the summer?

• A. World-wide propagation during daylight hours
• B. Heavy distortion on signals due to photon absorption
• C. High levels of atmospheric noise or static
• D. Poor propagation at any time of day