Practice Exam

G5C10

1. What is the inductance of three 10-millihenry inductors connected in parallel?

• A. 3.3 henries
• B. 3.3 millihenries
• C. 0.30 henries
• D. 30 millihenries

G0A12

2. What stations are subject to the FCC rules on RF exposure?

• A. Only stations with antennas lower than one wavelength above the ground
• B. All stations with a time-averaged transmission of more than one milliwatt
• C. All commercial stations; amateur radio stations are exempt
• D. Only stations transmitting more than 500 watts PEP

G9C03

3. How do the lengths of a three-element Yagi reflector and director compare to that of the driven element?

• A. They are all the same length
• B. Relative length depends on the frequency of operation
• C. The reflector is longer, and the director is shorter
• D. The reflector is shorter, and the director is longer

G1E04

4. 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 using a band where the Amateur Service is secondary
• D. When operating within one mile of an FCC Monitoring Station

G7A01

5. What is the function of a power supply bleeder resistor?

• A. It eliminates ground loop current
• B. It removes shock hazards from the induction coils
• C. It acts as a fuse for excess voltage
• D. It discharges the filter capacitors when power is removed

G5B12

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

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

G8A07

7. Which of the following phone emissions uses the narrowest bandwidth?

• A. Vestigial sideband
• B. Single sideband
• C. Frequency modulation
• D. Phase modulation

G8B12

8. What process combines two signals in a non-linear circuit to produce unwanted spurious outputs?

• A. Heterodyning
• B. Intermodulation
• C. Rolloff
• D. Detection

G2A04

9. Which mode is most commonly used for voice communications on the 17- and 12-meter bands?

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

G4C07

10. Why should soldered joints not be used in lightning protection ground connections?

• A. All these choices are correct
• B. Solder has too high a dielectric constant to provide adequate lightning protection
• C. A soldered joint will likely be destroyed by the heat of a lightning strike
• D. Solder flux will prevent a low conductivity connection

G7B10

11. Which of the following describes a linear amplifier?

• A. Any RF power amplifier used in conjunction with an amateur transceiver
• B. An amplifier used as a frequency multiplier
• C. A Class C high efficiency amplifier
• D. An amplifier in which the output preserves the input waveform

G8C06

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

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

G1B08

13. When is it permissible to communicate with amateur stations in countries outside the areas administered by the Federal Communications Commission?

• A. When the contact is with amateurs in any country except those whose administrations have notified the ITU that they object to such communications
• B. Only when the foreign country has a formal third-party agreement filed with the FCC
• C. Only when the contact is with amateurs licensed by a country which is a member of the International Amateur Radio Union, or by a territory possessed by such a country
• D. Only when the contact is with amateurs licensed by a country which is a member of the United Nations, or by a territory possessed by such a country

G6B06

14. What kind of device is an integrated circuit operational amplifier?

• A. Digital
• B. MMIC
• C. Analog
• D. Programmable Logic

G4D01

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

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

G2D09

16. Which of the following is required when participating in a contest on HF frequencies?

• A. Identify your station according to normal FCC regulations
• B. Send a QSL card to the stations worked, or QSL via Logbook of The World
• C. All these choices are correct
• D. Submit a log to the contest sponsor

G4A06

17. What is the purpose of an antenna tuner?

• A. Reduce the power dissipation in the feedline to the antenna
• B. Reduce the SWR in the feed line to the antenna
• C. Increase power transfer from the transmitter to the feed line
• D. All these choices are correct

G3C03

18. Why is skip propagation via the F2 region longer than that via the other ionospheric regions?

• A. Because it is the densest
• B. Because of the Doppler effect
• C. Because of temperature inversions
• D. Because it is the highest

G5A10

19. Which of the following devices can be used for impedance matching at radio frequencies?

• A. A transformer
• B. A Pi-network
• C. A length of transmission line
• D. All these choices are correct

G9D02

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

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

G2E06

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

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

G1D07

22. Volunteer Examiners are accredited by what organization?

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

G6A06

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

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

G2B06

24. How can you avoid harmful interference on an apparently clear frequency before calling CQ on CW or phone?

• A. Send "QSY" on CW or if using phone, announce "the frequency is in use," then give your call sign and listen for a response
• B. Send the letter "V" in Morse code several times and listen for a response, or say "test" several times and listen for a response
• C. Listen for 2 minutes before calling CQ
• D. Send "QRL?" on CW, followed by your call sign; or, if using phone, ask if the frequency is in use, followed by your call sign

G4B09

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

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

G9B10

26. What is the approximate length for a 1/2 wave dipole antenna cut for 14.250 MHz?

• A. 24 feet
• B. 8 feet
• C. 33 feet
• D. 16 feet

G0B01

27. Which wire or wires in a four-conductor 240 VAC circuit should be attached to fuses or circuit breakers?

• A. Only the hot wires
• B. Only the ground wire
• C. All wires
• D. Only the neutral wire

G3B03

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

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

G4E05

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

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

G3A05

30. What is the solar flux index?

• A. A measure of solar radiation with a wavelength of 10.7 centimeters
• B. Another name for the American sunspot number
• C. A measure of the highest frequency that is useful for ionospheric propagation between two points on Earth
• D. A count of sunspots that is adjusted for solar emissions

G9A08

31. If the SWR on an antenna feed line is 5:1, and a matching network at the transmitter end of the feed line is adjusted to present a 1:1 SWR to the transmitter, what is the resulting SWR on the feed line?

• A. 5:1
• B. Between 1:1 and 5:1 depending on the reflected power at the transmitter
• C. 1:1
• D. Between 1:1 and 5:1 depending on the characteristic impedance of the line

G1C09

32. What is the maximum power limit on the 60-meter band?

• A. 1500 watts PEP
• B. ERP of 100 watts PEP with respect to an isotropic antenna
• C. ERP of 100 watts PEP with respect to a dipole
• D. 10 watts RMS

G7C06

33. Which of the following is an advantage of a digital signal processing (DSP) filter compared to an analog filter?

• A. The DSP filter is much more effective at VHF frequencies
• B. Fewer digital components are required
• C. A wide range of filter bandwidths and shapes can be created
• D. Mixing products are greatly reduced

G1A02

34. On which of the following bands is phone operation prohibited?

• A. 17 meters
• B. 30 meters
• C. 160 meters
• D. 12 meters

G2C11

35. What does the Q signal "QRV" mean?

• A. There is interference on the frequency
• B. I am quitting for the day
• C. I am ready to receive
• D. You are sending too fast