Practice Exam

G9B09

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

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

G3B03

2. Which frequency will have the least attenuation for long-distance skip propagation?

• A. Just above the LUF
• B. Just below the critical frequency
• C. Just above the critical frequency
• D. Just below the MUF

G1A09

3. Which of the following frequencies is within the General class portion of the 15-meter band?

• A. 14250 kHz
• B. 24900 kHz
• C. 21300 kHz
• D. 18155 kHz

G4A07

4. What happens as a receiver's noise reduction control level is increased?

• A. CW signals may become severely attenuated
• B. Received frequency may shift several kHz
• C. Received frequency may become unstable
• D. Received signals may become distorted

G1D01

5. Who may receive partial credit for the elements represented by an expired amateur radio license?

• A. Any person who can demonstrate that they once held an FCC-issued General, Advanced, or Amateur Extra class license that was not revoked by the FCC
• B. Anyone who held an FCC-issued amateur radio license that expired not less than 5 and not more than 15 years ago
• C. Only persons who once held an FCC issued Novice, Technician, or Technician Plus license
• D. Any person who previously held an amateur license issued by another country, but only if that country has a current reciprocal licensing agreement with the FCC

G2C01

6. Which of the following describes full break-in CW operation (QSK)?

• A. Breaking stations send the Morse code prosign "BK"
• B. Transmitting stations can receive between code characters and elements
• C. Automatic keyers, instead of hand keys, are used to send Morse code
• D. An operator must activate a manual send/receive switch before and after every transmission

G0B06

7. Which of the following is covered by the National Electrical Code?

• A. Electrical safety of the station
• B. Acceptable modulation limits
• C. Acceptable bandwidth limits
• D. RF exposure limits of the human body

G8B07

8. What is the frequency deviation for a 12.21 MHz reactance modulated oscillator in a 5 kHz deviation, 146.52 MHz FM phone transmitter?

• A. 60 kHz
• B. 101.75 Hz
• C. 5 kHz
• D. 416.7 Hz

G5C04

9. What is the approximate total resistance of a 100- and a 200-ohm resistor in parallel?

• A. 75 ohms
• B. 300 ohms
• C. 150 ohms
• D. 67 ohms

G1B04

10. Which of the following transmissions is permitted for all amateur stations?

• A. Automatic retransmission of other amateur signals by any amateur station
• B. Unidentified transmissions of less than 10 seconds duration for test purposes only
• C. Occasional retransmission of weather and propagation forecast information from US government stations
• D. Encrypted messages, if not intended to facilitate a criminal act

G8C03

11. What part of a packet radio frame contains the routing and handling information?

• A. Directory
• B. Header
• C. Trailer
• D. Preamble

G3A06

12. What is a geomagnetic storm?

• A. Ripples in the geomagnetic force
• B. A sudden drop in the solar flux index
• C. A temporary disturbance in Earth's geomagnetic field
• D. A thunderstorm that affects radio propagation

G0A02

13. Which of the following is used to determine RF exposure from a transmitted signal?

• A. All these choices are correct
• B. Its power density
• C. Its duty cycle
• D. Its frequency

G9D07

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

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

G4B09

15. When is an analog multimeter preferred to a digital multimeter?

• A. When testing logic circuits
• B. When adjusting circuits for maximum or minimum values
• C. When high precision is desired
• D. When measuring the frequency of an oscillator

G3C11

16. Which ionospheric region is the most absorbent of signals below 10 MHz during daylight hours?

• A. The E region
• B. The F2 region
• C. The D region
• D. The F1 region

G1E05

17. What are the restrictions on messages sent to a third party in a country with which there is a Third-Party Agreement?

• A. They must be for other licensed amateurs
• B. They must relate to emergencies or disaster relief
• C. The message must be limited to no longer than 1 minute in duration and the name of the third party must be recorded in the station log
• D. They must relate to amateur radio, or remarks of a personal character, or messages relating to emergencies or disaster relief

G4E05

18. Which of the following most limits an HF mobile installation?

• A. FCC rules limiting mobile output power on the 75-meter band
• B. The wire gauge of the DC power line to the transceiver
• C. "Picket fencing"
• D. Efficiency of the electrically short antenna

G5B12

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

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

G7B11

20. For which of the following modes is a Class C power stage appropriate for amplifying a modulated signal?

• A. AM
• B. SSB
• C. All these choices are correct
• D. FM

G6B02

21. What is meant by the term MMIC?

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

G2A12

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

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

G2D11

23. Why are signal reports typically exchanged at the beginning of an HF contact?

• A. To follow standard radiogram structure
• B. To be sure the contact will count for award programs
• C. To allow each station to operate according to conditions
• D. To allow each station to calibrate their frequency display

G8A02

24. What is the name of the process that changes the phase angle of an RF signal to convey information?

• A. Phase modulation
• B. Phase transformation
• C. Phase convolution
• D. Phase inversion

G9C11

25. What is a beta or hairpin match?

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

G1C02

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

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

G7A05

27. What portion of the AC cycle is converted to DC by a half-wave rectifier?

• A. 90 degrees
• B. 180 degrees
• C. 270 degrees
• D. 360 degrees

G7C09

28. What is the phase difference between the I and Q RF signals that software-defined radio (SDR) equipment uses for modulation and demodulation?

• A. Zero
• B. 180 degrees
• C. 45 degrees
• D. 90 degrees

G2B05

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

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

G4C10

30. What could be a symptom caused by a ground loop in your station's audio connections?

• A. An item of station equipment starts to draw excessive amounts of current
• B. The SWR reading for one or more antennas is suddenly very high
• C. You receive reports of harmonic interference from your station
• D. You receive reports of "hum" on your station's transmitted signal

G2E10

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

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

G5A11

32. What letter is used to represent reactance?

• A. B
• B. Y
• C. Z
• D. X

G9A10

33. What standing wave ratio results from connecting a 50-ohm feed line to a 10-ohm resistive load?

• A. 1:2
• B. 2:1
• C. 1:5
• D. 5:1

G4D01

34. What is the purpose of a speech processor in a transceiver?

• A. Increase transmitter bass response for more natural-sounding SSB signals
• B. Increase the apparent loudness of transmitted voice signals
• C. Prevent distortion of voice signals
• D. Decrease high-frequency voice output to prevent out-of-band operation

G6A02

35. What is an advantage of batteries with low internal resistance?

• A. High discharge current
• B. Rapid recharge
• C. Long life
• D. High voltage