Practice Exam

G3A04

1. Which of the following are the least reliable bands for long-distance communications during periods of low solar activity?

• A. 60 meters and 40 meters
• B. 80 meters and 160 meters
• C. 30 meters and 20 meters
• D. 15 meters, 12 meters, and 10 meters

G3B05

2. How does the ionosphere affect radio waves with frequencies below the MUF and above the LUF?

• A. They are amplified by interaction with the ionosphere
• B. They are refracted back to Earth
• C. They are refracted and trapped in the ionosphere to circle Earth
• D. They pass through the ionosphere

G5C12

3. What is the capacitance of a 20-microfarad capacitor connected in series with a 50-microfarad capacitor?

• A. 14.3 microfarads
• B. 70 microfarads
• C. 0.07 microfarads
• D. 1,000 microfarads

G1B07

4. What are the restrictions on the use of abbreviations or procedural signals in the amateur service?

• A. They may be used if they do not obscure the meaning of a message
• B. They are not permitted
• C. They are limited to those expressly listed in Part 97 of the FCC rules
• D. Only "Q" signals are permitted

G1E04

5. Which of the following conditions require a licensed amateur radio operator to take specific steps to avoid harmful interference to other users or facilities?

• A. When a station is transmitting spread spectrum emissions
• B. All these choices are correct
• C. When operating within one mile of an FCC Monitoring Station
• D. When using a band where the Amateur Service is secondary

G7A06

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

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

G5B05

7. How many watts are consumed when a current of 7.0 milliamperes flows through a 1,250-ohm resistance?

• A. Approximately 61 watts
• B. Approximately 11 milliwatts
• C. Approximately 61 milliwatts
• D. Approximately 11 watts

G7B07

8. Which of the following are basic components of a sine wave oscillator?

• A. A circulator and a filter operating in a feed-forward loop
• B. A filter and an amplifier operating in a feedback loop
• C. An amplifier and a divider
• D. A frequency multiplier and a mixer

G3C08

9. Why are HF scatter signals in the skip zone usually weak?

• A. Propagation is via ground waves, which absorb most of the signal energy
• B. Signals are scattered from the magnetosphere, which is not a good reflector
• C. Propagation is via ducts in the F region, which absorb most of the energy
• D. Only a small part of the signal energy is scattered into the skip zone

G0B05

10. Which of the following conditions will cause a ground fault circuit interrupter (GFCI) to disconnect AC power?

• A. Current flowing from one or more of the hot wires to the neutral wire
• B. Current flowing from one or more of the hot wires directly to ground
• C. All these choices are correct
• D. Overvoltage on the hot wires

G0A02

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

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

G4D06

12. How much change in signal strength is typically represented by one S unit?

• A. 6 dB
• B. 15 dB
• C. 12 dB
• D. 18 dB

G4E02

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

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

G8B13

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

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

G4C08

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

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

G1C06

16. What is the limit for transmitter power on the 1.8 MHz band?

• A. 1500 watts PEP output
• B. 200 watts PEP output
• C. 1200 watts PEP output
• D. 1000 watts PEP output

G6B12

17. Which of these connector types is commonly used for low frequency or dc signal connections to a transceiver?

• A. PL-259
• B. BNC
• C. Type N
• D. RCA Phono

G2B10

18. Which of the following is good amateur practice for net management?

• A. Have a backup frequency in case of interference or poor conditions
• B. Transmit the full net roster at the beginning of every session
• C. Always use multiple sets of phonetics during check-in
• D. All these choices are correct

G2C08

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

• A. AR
• B. KN
• C. BK
• D. SK

G9D01

20. Which of the following antenna types will be most effective as a near vertical incidence skywave (NVIS) antenna for short-skip communications on 40 meters during the day?

• A. A horizontal dipole placed at approximately 1/2 wavelength above the ground
• B. A vertical dipole placed at approximately 1/2 wavelength above the ground
• C. A horizontal dipole placed between 1/10 and 1/4 wavelength above the ground
• D. A vertical antenna placed between 1/4 and 1/2 wavelength above the ground

G8A13

21. What is a link budget?

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

G2D01

22. What is the Volunteer Monitor Program?

• A. Amateur volunteers who are formally enlisted to monitor the airwaves for rules violations
• B. Amateur volunteers who conduct amateur licensing examinations
• C. Amateur volunteers who conduct frequency coordination for amateur VHF repeaters
• D. Amateur volunteers who use their station equipment to help civil defense organizations in times of emergency

G4A02

23. What is the benefit of using the opposite or "reverse" sideband when receiving CW?

• A. It may be possible to reduce or eliminate interference from other signals
• B. Accidental out-of-band operation can be prevented
• C. More stations can be accommodated within a given signal passband
• D. Interference from impulse noise will be eliminated

G8C16

24. Which of the following provide digital voice modes?

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

G6A03

25. What is the approximate forward threshold voltage of a germanium diode?

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

G1D04

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

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

G9C12

27. 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

G2E06

28. What is the most common frequency shift for RTTY emissions in the amateur HF bands?

• A. 170 Hz
• B. 425 Hz
• C. 85 Hz
• D. 850 Hz

G5A12

29. 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. Resistance is cancelled
• D. Current and voltage are equal

G1A03

30. On which of the following bands is image transmission prohibited?

• A. 160 meters
• B. 12 meters
• C. 20 meters
• D. 30 meters

G2A11

31. Generally, who should respond to a station in the contiguous 48 states calling "CQ DX"?

• A. Only contest stations
• B. Only stations in Germany
• C. Any stations outside the lower 48 states
• D. Any caller is welcome to respond

G7C14

32. The bandwidth of a band-pass filter is measured between what two frequencies?

• A. Cutoff and rolloff
• B. Image and harmonic
• C. Upper and lower half-power
• D. Pole and zero

G4B12

33. What effect can strong signals from nearby transmitters have on an antenna analyzer?

• A. All these choices are correct
• B. Generation of harmonics which interfere with frequency readings
• C. Received power that interferes with SWR readings
• D. Desensitization which can cause intermodulation products which interfere with impedance readings

G9A07

34. What must be done to prevent standing waves on a feed line connected to an antenna?

• A. The feed line must be an even number of physical half wavelengths long
• B. The antenna feed point impedance must be matched to the characteristic impedance of the feed line
• C. The antenna feed point must be at DC ground potential
• D. The feed line must be an odd number of electrical quarter wavelengths long

G9B11

35. What is the approximate length for a 1/2 wave dipole antenna cut for 3.550 MHz?

• A. 132 feet
• B. 42 feet
• C. 263 feet
• D. 84 feet