Practice Exam

G5A09

1. What unit is used to measure reactance?

• A. Siemens
• B. Ampere
• C. Farad
• D. Ohm

G4C10

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

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

G1B04

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

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

G6A11

4. What happens when an inductor is operated above its self-resonant frequency?

• A. Catastrophic failure is likely
• B. Harmonics are generated
• C. It becomes capacitive
• D. Its reactance increases

G3A03

5. Approximately how long does it take the increased ultraviolet and X-ray radiation from a solar flare to affect radio propagation on Earth?

• A. 8 minutes
• B. 28 days
• C. 1 to 2 hours
• D. 20 to 40 hours

G2A09

6. Why do most amateur stations use lower sideband on the 160-, 75-, and 40-meter bands?

• A. It is commonly accepted amateur practice
• B. Lower sideband is the only sideband legal on these frequency bands
• C. Lower sideband is more efficient than upper sideband at these frequencies
• D. Because it is fully compatible with an AM detector

G1A08

7. Which HF bands have segments exclusively allocated to Amateur Extra licensees?

• A. 60 meters, 30 meters, 17 meters, and 12 meters
• B. 80 meters, 40 meters, 20 meters, and 15 meters
• C. All HF bands
• D. All HF bands except 160 meters and 10 meters

G7A13

8. Which symbol in Figure G7-1 represents a tapped inductor?

• A. Symbol 11
• B. Symbol 6
• C. Symbol 1
• D. Symbol 7

G6B05

9. What is an advantage of using a ferrite core toroidal inductor?

• A. Large values of inductance may be obtained
• B. The magnetic properties of the core may be optimized for a specific range of frequencies
• C. All these choices are correct
• D. Most of the magnetic field is contained in the core

G8A14

10. What is link margin?

• A. The opposite of fade margin
• B. The difference between received power level and minimum required signal level at the input to the receiver
• C. Receiver sensitivity plus 3 dB
• D. Transmit power minus receiver sensitivity

G3C11

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

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

G9A02

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

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

G2B05

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

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

G9D02

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

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

G7B06

15. What is a shift register?

• A. A digital mixer
• B. A clocked array of circuits that passes data in steps along the array
• C. An array of operational amplifiers used for tri-state arithmetic operations
• D. An analog mixer

G4E08

16. In what configuration are the individual cells in a solar panel connected together?

• A. Series-parallel
• B. Full-wave bridge
• C. Bypass
• D. Shunt

G3B10

17. What is the approximate maximum distance along the Earth's surface normally covered in one hop using the E region?

• A. 12,000 miles
• B. 1,200 miles
• C. 2,500 miles
• D. 180 miles

G4A10

18. What is the function of an electronic keyer?

• A. Automatic transmit/receive switching
• B. To allow time for switching the antenna from the receiver to the transmitter
• C. Automatic generation of dots and dashes for CW operation
• D. Computer interface for PSK and RTTY operation

G1C05

19. What is the limit for transmitter power on the 28 MHz band for a General Class control operator?

• A. 1500 watts PEP output
• B. 2000 watts PEP output
• C. 1000 watts PEP output
• D. 100 watts PEP output

G9C01

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

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

G1D06

21. Until an upgrade to General class is shown in the FCC database, when must a Technician licensee identify with "AG" after their call sign?

• A. A special identifier is not required if their General class license application has been filed with the FCC
• B. Whenever they operate using General class frequency privileges
• C. Whenever they operate on any amateur frequency
• D. Whenever they operate using Technician frequency privileges

G5C11

22. What is the inductance of a circuit with a 20-millihenry inductor connected in series with a 50-millihenry inductor?

• A. 7 millihenries
• B. 70 millihenries
• C. 1,000 millihenries
• D. 14.3 millihenries

G4B04

23. What signal source is connected to the vertical input of an oscilloscope when checking the RF envelope pattern of a transmitted signal?

• A. The local oscillator of the transmitter
• B. An external RF oscillator
• C. The attenuated RF output of the transmitter
• D. The transmitter balanced mixer output

G8C09

24. Which is true of mesh network microwave nodes?

• A. More nodes reduce overall microwave out of band interference
• B. If one node fails, a packet may still reach its target station via an alternate node
• C. Links between two nodes in a network may have different frequencies and bandwidths
• D. Having more nodes increases signal strengths

G2E07

25. Which of the following is required when using FT8?

• A. A vertically polarized antenna
• B. Receiver attenuator set to -12 dB
• C. A special hardware modem
• D. Computer time accurate to within approximately 1 second

G1E12

26. When may third-party messages be transmitted via remote control?

• A. Only when the message is intended for licensed radio amateurs
• B. Under any circumstances in which third party messages are permitted by FCC rules
• C. Only when the message is intended for third parties in areas where licensing is controlled by the FCC
• D. Under no circumstances except for emergencies

G7C10

27. What is an advantage of using I-Q modulation with software-defined radios (SDRs)?

• A. The need for high resolution analog-to-digital converters is eliminated
• B. Minimum detectible signal level is reduced
• C. All types of modulation can be created with appropriate processing
• D. Automatic conversion of the signal from digital to analog

G4D06

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

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

G0B05

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

G8B06

30. What is the total bandwidth of an FM phone transmission having 5 kHz deviation and 3 kHz modulating frequency?

• A. 16 kHz
• B. 5 kHz
• C. 8 kHz
• D. 3 kHz

G9B04

31. What is the radiation pattern of a dipole antenna in free space in a plane containing the conductor?

• A. It is a circle (equal radiation in all directions)
• B. It is a figure-eight at right angles to the antenna
• C. It has a pair of lobes on one side of the antenna and a single lobe on the other side
• D. It is a figure-eight off both ends of the antenna

G2C08

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

• A. KN
• B. BK
• C. AR
• D. SK

G5B07

33. What value of an AC signal produces the same power dissipation in a resistor as a DC voltage of the same value?

• A. The peak value
• B. The reciprocal of the RMS value
• C. The peak-to-peak value
• D. The RMS value

G2D05

34. Which of the following indicates that you are looking for an HF contact with any station?

• A. Sign your call sign once, followed by the words "listening for a call" -- if no answer, change frequency and repeat
• B. Repeat "CQ" a few times, followed by "this is," then your call sign a few times, then pause to listen, repeat as necessary
• C. Say "QTC" followed by "this is" and your call sign -- if no answer, change frequency and repeat
• D. Transmit an unmodulated carried for approximately 10 seconds, followed by "this is" and your call sign, and pause to listen -- repeat as necessary

G0A04

35. What does "time averaging" mean when evaluating RF radiation exposure?

• A. The total RF exposure averaged over a certain period
• B. The total time of the exposure
• C. The average amount of power developed by the transmitter over a specific 24-hour period
• D. The average time it takes RF radiation to have any long-term effect on the body