Practice Exam

G2B07

1. Which of the following complies with commonly accepted amateur practice when choosing a frequency on which to initiate a call?

• A. All these choices are correct
• B. Identify your station by transmitting your call sign at least 3 times
• C. Listen on the frequency for at least two minutes to be sure it is clear
• D. Follow the voluntary band plan

G2E02

2. What is VARA?

• A. A DX spotting system using a network of software defined radios
• B. A low signal-to-noise digital mode used for EME (moonbounce)
• C. A radio direction finding system used on VHF and UHF
• D. A digital protocol used with Winlink

G9D05

3. What is an advantage of vertically stacking horizontally polarized Yagi antennas?

• A. It narrows the main lobe in azimuth
• B. It allows simultaneous vertical and horizontal polarization
• C. It narrows the main lobe in elevation
• D. It allows quick selection of vertical or horizontal polarization

G3B07

4. What does LUF stand for?

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

G5B13

5. What is the output PEP of an unmodulated carrier if the average power is 1060 watts?

• A. 1500 watts
• B. 2120 watts
• C. 530 watts
• D. 1060 watts

G8B09

6. Why is it good to match receiver bandwidth to the bandwidth of the operating mode?

• A. It is required by FCC rules
• B. It minimizes power consumption in the receiver
• C. It results in the best signal-to-noise ratio
• D. It improves impedance matching of the antenna

G2C02

7. What should you do if a CW station sends "QRS?"

• A. Repeat everything twice
• B. Increase your power
• C. Send slower
• D. Change frequency

G8C04

8. Which of the following describes Baudot code?

• A. A 7-bit code with start, stop, and parity bits
• B. A code using SELCAL and LISTEN
• C. A 5-bit code with additional start and stop bits
• D. A code using error detection and correction

G1A09

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

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

G1C06

10. 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

G6A11

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

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

G9A08

12. 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. 1:1
• B. Between 1:1 and 5:1 depending on the characteristic impedance of the line
• C. 5:1
• D. Between 1:1 and 5:1 depending on the reflected power at the transmitter

G4D06

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

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

G1E07

14. In what part of the 2.4 GHz band may an amateur station communicate with non-licensed Wi-Fi stations?

• A. Channels 42 through 45
• B. Anywhere in the band
• C. Channels 1 through 4
• D. No part

G9C01

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

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

G1D06

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

G7C04

17. How is a product detector used?

• A. Used in test gear to detect spurious mixing products
• B. Used in transmitter to perform frequency multiplication
• C. Used in a single sideband receiver to extract the modulated signal
• D. Used in an FM receiver to filter out unwanted sidebands

G3C11

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

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

G4C12

19. Why must all metal enclosures of station equipment be grounded?

• A. It prevents signal overload
• B. It prevents a blown fuse in the event of an internal short circuit
• C. It ensures that hazardous voltages cannot appear on the chassis
• D. It ensures that the neutral wire is grounded

G2D08

20. Why do many amateurs keep a station log?

• A. The FCC requires a log of all international third-party traffic
• B. The log provides evidence of operation needed to renew a license without retest
• C. To help with a reply if the FCC requests information about your station
• D. The FCC requires a log of all international contacts

G7A02

21. Which of the following components are used in a power supply filter network?

• A. Diodes
• B. Transformers and transducers
• C. Capacitors and inductors
• D. All these choices are correct

G5A12

22. What occurs in an LC circuit at resonance?

• A. Current and voltage are equal
• B. The circuit radiates all its energy in the form of radio waves
• C. Inductive reactance and capacitive reactance cancel
• D. Resistance is cancelled

G4E04

23. Why should DC power for a 100-watt HF transceiver not be supplied by a vehicle's auxiliary power socket?

• A. Drawing more than 50 watts from this socket could cause the engine to overheat
• B. The socket's wiring may be inadequate for the current drawn by the transceiver
• C. The DC polarity of the socket is reversed from the polarity of modern HF transceivers
• D. The socket is not wired with an RF-shielded power cable

G6B12

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

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

G5C07

25. What transformer turns ratio matches an antenna's 600-ohm feed point impedance to a 50-ohm coaxial cable?

• A. 3.5 to 1
• B. 144 to 1
• C. 12 to 1
• D. 24 to 1

G7B08

26. How is the efficiency of an RF power amplifier determined?

• A. Divide the RF output power by the DC input power
• B. Divide the DC input power by the DC output power
• C. Add the RF input power to the DC output power
• D. Multiply the RF input power by the reciprocal of the RF output power

G2A09

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

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

G4A06

28. What is the purpose of an antenna tuner?

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

G4B09

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

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

G0B05

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

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

G3A07

31. At what point in the solar cycle does the 20-meter band usually support worldwide propagation during daylight hours?

• A. At any point
• B. Only at the minimum point
• C. Only at the maximum point
• D. At the summer solstice

G1B03

32. Which of the following is a purpose of a beacon station as identified in the FCC rules?

• A. Automatic identification of repeaters
• B. All these choices are correct
• C. Observation of propagation and reception
• D. Transmission of bulletins of general interest to amateur radio licensees

G8A01

33. How is direct binary FSK modulation generated?

• A. By using a transceiver's computer data interface protocol to change frequencies
• B. By reconfiguring the CW keying input to act as a tone generator
• C. By changing an oscillator's frequency directly with a digital control signal
• D. By keying an FM transmitter with a sub-audible tone

G9B04

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

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

G0A09

35. What type of instrument can be used to accurately measure an RF field strength?

• A. An SWR meter with a peak-reading function
• B. An oscilloscope with a high-stability crystal marker generator
• C. A receiver with digital signal processing (DSP) noise reduction
• D. A calibrated field strength meter with a calibrated antenna