Practice Exam

G4C06

1. What is a possible effect of a resonant ground connection?

• A. Overheating of ground straps
• B. A ground loop
• C. Corrosion of the ground rod
• D. High RF voltages on the enclosures of station equipment

G6A01

2. What is the minimum allowable discharge voltage for maximum life of a standard 12-volt lead-acid battery?

• A. 10.5 volts
• B. 6 volts
• C. 8.5 volts
• D. 12 volts

G1B10

3. What is the power limit for beacon stations?

• A. 100 watts PEP output
• B. 200 watts PEP output
• C. 10 watts PEP output
• D. 20 watts PEP output

G9B08

4. How does the feed point impedance of a 1/2 wave dipole change as the feed point is moved from the center toward the ends?

• A. It steadily increases
• B. It steadily decreases
• C. It peaks at about 1/8 wavelength from the end
• D. It is unaffected by the location of the feed point

G5A04

5. Which of the following is opposition to the flow of alternating current in a capacitor?

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

G5B10

6. What percentage of power loss is equivalent to a loss of 1 dB?

• A. 12.2 percent
• B. 20.6 percent
• C. 25.9 percent
• D. 10.9 percent

G4B13

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

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

G2A08

8. What is the recommended way to break into a phone contact?

• A. Say "Breaker Breaker"
• B. Say "QRZ" several times, followed by your call sign
• C. Say your call sign once
• D. Say "CQ" followed by the call sign of either station

G0A06

9. What must you do if your station fails to meet the FCC RF exposure exemption criteria?

• A. Contact the FCC for permission to transmit
• B. Perform an RF exposure evaluation in accordance with World Meteorological Organization guidelines
• C. Perform an RF Exposure Evaluation in accordance with FCC OET Bulletin 65
• D. Use an FCC-approved band-pass filter

G7B04

10. In a Class A amplifier, what percentage of the time does the amplifying device conduct?

• A. 50%
• B. Less than 50%
• C. More than 50% but less than 100%
• D. 100%

G6B04

11. What is a typical upper frequency limit for low SWR operation of 50-ohm BNC connectors?

• A. 500 MHz
• B. 50 MHz
• C. 4 GHz
• D. 40 GHz

G9D02

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

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

G4E02

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

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

G8C06

14. What action results from a failure to exchange information due to excessive transmission attempts when using an ARQ mode?

• A. Packets will be routed incorrectly
• B. The checksum overflows
• C. The connection is dropped
• D. Encoding reverts to the default character set

G2D03

15. What procedure may be used by Volunteer Monitors to localize a station whose continuous carrier is holding a repeater on in their area?

• A. Compare signal strengths between the input and output of the repeater
• B. All these choices are correct
• C. Compare beam headings on the repeater input from their home locations with that of other Volunteer Monitors
• D. Compare vertical and horizontal signal strengths on the input frequency

G3A12

16. What does the K-index measure?

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

G7A10

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

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

G8A11

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

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

G2B01

19. Which of the following is true concerning access to frequencies?

• A. Nets have priority
• B. QSOs in progress have priority
• C. Contest operations should yield to non-contest use of frequencies
• D. Except during emergencies, no amateur station has priority access to any frequency

G5C13

20. Which of the following components should be added to a capacitor to increase the capacitance?

• A. A capacitor in parallel
• B. An inductor in parallel
• C. An inductor in series
• D. A capacitor in series

G1D02

21. What license examinations may you administer as an accredited Volunteer Examiner holding a General class operator license?

• A. General and Technician
• B. None, only Amateur Extra class licensees may be accredited
• C. Amateur Extra, General, and Technician
• D. Technician only

G1A11

22. When General class licensees are not permitted to use the entire voice portion of a band, which portion of the voice segment is available to them?

• A. The lower frequency portion on frequencies below 7.3 MHz, and the upper portion on frequencies above 14.150 MHz
• B. The upper frequency portion on frequencies below 7.3 MHz, and the lower portion on frequencies above 14.150 MHz
• C. The upper frequency portion
• D. The lower frequency portion

G7C03

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

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

G9C01

24. Which of the following would increase the bandwidth of a Yagi antenna?

• A. Closer element spacing
• B. Tapered-diameter elements
• C. Loading coils in series with the element
• D. Larger-diameter elements

G1C04

25. Which of the following is required by the FCC rules when operating in the 60-meter band?

• A. If you are using an antenna other than a dipole, you must keep a record of the gain of your antenna
• B. You must keep a record of the manufacturer of your equipment and the antenna used
• C. You must keep a record of the date, time, frequency, power level, and stations worked
• D. You must keep a record of all third-party traffic

G0B08

26. What should be done before climbing a tower that supports electrically powered devices?

• A. Unground the base of the tower
• B. Make sure all circuits that supply power to the tower are locked out and tagged
• C. Notify the electric company that a person will be working on the tower
• D. All these choices are correct

G4D08

27. What frequency range is occupied by a 3 kHz LSB signal when the displayed carrier frequency is set to 7.178 MHz?

• A. 7.1765 MHz to 7.1795 MHz
• B. 7.175 MHz to 7.178 MHz
• C. 7.178 MHz to 7.181 MHz
• D. 7.178 MHz to 7.184 MHz

G8B09

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

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

G2C04

29. 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?"

G3B04

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

G4A11

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

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

G1E10

32. Why should an amateur operator normally avoid transmitting on 14.100, 18.110, 21.150, 24.930 and 28.200 MHz?

• A. A system of automatic digital stations operates on those frequencies
• B. A system of propagation beacon stations operates on those frequencies
• C. These frequencies are set aside for bulletins from the FCC
• D. These frequencies are set aside for emergency operations

G9A02

33. What is the relationship between high standing wave ratio (SWR) and transmission line loss?

• A. There is no relationship between transmission line loss and SWR
• B. High SWR increases loss in a lossy transmission line
• C. High SWR reduces the relative effect of transmission line loss
• D. High SWR makes it difficult to measure transmission line loss

G3C02

34. What is meant by the term "critical frequency" at a given incidence angle?

• A. The lowest frequency which is refracted back to Earth
• B. The frequency at which the signal-to-noise ratio approaches unity
• C. The frequency at which the signal-to-noise ratio is 6 dB
• D. The highest frequency which is refracted back to Earth

G2E02

35. What is VARA?

• A. A DX spotting system using a network of software defined radios
• B. A digital protocol used with Winlink
• C. A radio direction finding system used on VHF and UHF
• D. A low signal-to-noise digital mode used for EME (moonbounce)