Practice Exam

G4C01

1. Which of the following might be useful in reducing RF interference to audio frequency circuits?

• A. Reverse-biased diode
• B. Forward-biased diode
• C. Bypass inductor
• D. Bypass capacitor

G4B11

2. Which of the following must be connected to an antenna analyzer when it is being used for SWR measurements?

• A. Antenna and feed line
• B. All these choices are correct
• C. Transmitter
• D. Receiver

G9C12

3. Which of the following is a characteristic of using a gamma match with a Yagi antenna?

• A. It does not require the driven element to be insulated from the boom
• B. All these choices are correct
• C. It is useful for matching multiband antennas
• D. It does not require any inductors or capacitors

G9A03

4. What is the nominal characteristic impedance of "window line" transmission line?

• A. 75 ohms
• B. 450 ohms
• C. 100 ohms
• D. 50 ohms

G4E11

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

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

G2D07

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

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

G2A01

7. Which mode is most commonly used for voice communications on frequencies of 14 MHz or higher?

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

G8B13

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

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

G2B02

9. 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. Immediately cease all transmissions
• B. Immediately decrease power to avoid interfering with the station in distress
• C. Inform your local emergency coordinator
• D. Acknowledge the station in distress and determine what assistance may be needed

G8C16

10. Which of the following provide digital voice modes?

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

G3B07

11. What does LUF stand for?

• A. Lowest Usable Frequency for communications to any point outside a 100-mile radius
• B. Lowest Usable Frequency during the past 60 minutes
• C. The Lowest Usable Frequency during a 24-hour period
• D. The Lowest Usable Frequency for communications between two specific points

G6B07

12. Which of the following describes a type N connector?

• A. A moisture-resistant RF connector useful to 10 GHz
• B. A small bayonet connector used for data circuits
• C. A nickel plated version of the PL-259
• D. A low noise figure VHF connector

G6A06

13. Why should wire-wound resistors not be used in RF circuits?

• A. The resistor's inductance could make circuit performance unpredictable
• B. The resistor's internal capacitance would detune the circuit
• C. The resistor could overheat
• D. The resistor's tolerance value would not be adequate

G1C07

14. What must be done before using a new digital protocol on the air?

• A. Obtain an experimental license from the FCC
• B. Type-certify equipment to FCC standards
• C. Publicly document the technical characteristics of the protocol
• D. Submit a rule-making proposal to the FCC describing the codes and methods of the technique

G4A04

15. What is the effect on plate current of the correct setting of a vacuum-tube RF power amplifier's TUNE control?

• A. A pronounced peak
• B. A slow, rhythmic oscillation
• C. No change will be observed
• D. A pronounced dip

G1B09

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

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

G9D08

17. How does a "screwdriver" mobile antenna adjust its feed point impedance?

• A. By varying its body capacitance
• B. By varying the base loading inductance
• C. By extending and retracting the whip
• D. By deploying a capacitance hat

G7B01

18. What is the purpose of neutralizing an amplifier?

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

G7C07

19. What term specifies a filter's attenuation inside its passband?

• A. Q
• B. Return loss
• C. Ultimate rejection
• D. Insertion loss

G1E10

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

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

G1A10

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

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

G7A12

22. Which symbol in Figure G7-1 represents a solid core transformer?

• A. Symbol 7
• B. Symbol 6
• C. Symbol 1
• D. Symbol 4

G5B09

23. What is the RMS voltage of a sine wave with a value of 17 volts peak?

• A. 12 volts
• B. 24 volts
• C. 8.5 volts
• D. 34 volts

G5C03

24. What is the total resistance of a 10-, a 20-, and a 50-ohm resistor connected in parallel?

• A. 80 ohms
• B. 17 ohms
• C. 5.9 ohms
• D. 0.17 ohms

G1D03

25. On which of the following band segments may you operate if you are a Technician class operator and have an unexpired Certificate of Successful Completion of Examination (CSCE) for General class privileges?

• A. On any General or Technician class band segment except 30 meters and 60 meters
• B. On any General or Technician class band segment
• C. Only on the Technician band segments until you have a receipt for the FCC application fee payment
• D. Only the Technician band segments until your upgrade is posted in the FCC database

G0A08

26. Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations?

• A. Perform a routine RF exposure evaluation and prevent access to any identified high exposure areas
• B. All these choices are correct
• C. Notify neighbors within a 100-foot radius of the antenna of the existence of the station and power levels
• D. Post a copy of FCC Part 97.13 in the station

G3A11

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

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

G8A04

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

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

G4D10

29. 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 3 kHz below the edge of the segment
• C. At least 1 kHz below the edge of the segment
• D. At least 3 kHz above the edge of the segment

G5A11

30. What letter is used to represent reactance?

• A. X
• B. Y
• C. Z
• D. B

G2E08

31. In what segment of the 20-meter band are most digital mode operations commonly found?

• A. In the middle of the CW segment, near 14.100 MHz
• B. Between 14.070 MHz and 14.100 MHz
• C. At the top of the SSB phone segment, near 14.325 MHz
• D. At the bottom of the slow-scan TV segment, near 14.230 MHz

G3C06

32. What is a characteristic of HF scatter?

• A. Signals have a fluttering sound
• B. Phone signals have high intelligibility
• C. There are very large, sudden swings in signal strength
• D. Scatter propagation occurs only at night

G0B02

33. 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 20
• B. AWG number 12
• C. AWG number 16
• D. AWG number 8

G2C08

34. What prosign is sent to indicate the end of a formal message when using CW?

• A. KN
• B. SK
• C. AR
• D. BK

G9B02

35. Which of the following is a common way to adjust the feed point impedance of an elevated quarter-wave ground-plane vertical antenna to be approximately 50 ohms?

• A. Lengthen the radials beyond one wavelength
• B. Coil the radials
• C. Slope the radials downward
• D. Slope the radials upward