Practice Exam

Element 3: General

G8A11

1. What is the modulation envelope of an AM signal?

G4E05

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

G7C14

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

G9D04

4. What is the primary purpose of antenna traps?

G1A13

5. What is the appropriate action if, when operating on either the 30-meter or 60-meter bands, a station in the primary service interferes with your contact?

G3B04

6. What is a reliable way to determine if the MUF is high enough to support skip propagation between your station and a distant location on frequencies between 14 and 30 MHz?

G2E09

7. How do you join a contact between two stations using the PACTOR protocol?

G9B10

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

G5C17

9. What is the value in nanofarads (nF) of a 22,000 picofarad (pF) capacitor?

G1C14

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

G1E02

11. When may a 10-meter repeater retransmit the 2-meter signal from a station that has a Technician class control operator?

G0B11

12. Which of the following is good practice for lightning protection grounds?

G2A02

13. Which of the following modes is most commonly used for voice communications on the 160-meter, 75-meter, and 40-meter bands?

G2C09

14. What does the Q signal "QSL" mean?

G4A17

15. What happens as the noise reduction control level in a receiver is increased?

G7B01

16. What is the reason for neutralizing the final amplifier stage of a transmitter?

G8B05

17. What is the approximate bandwidth of a PACTOR-III signal at maximum data rate?

G3C05

18. Why is long-distance communication on the 40-meter, 60-meter, 80-meter, and 160-meter bands more difficult during the day?

G9A08

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

G4C09

20. How can a ground loop be avoided?

G4D10

21. How close to the lower edge of the phone segment should your displayed carrier frequency be when using 3 kHz wide LSB?

G1D07

22. Volunteer Examiners are accredited by what organization?

G7A04

23. What is an advantage of a half-wave rectifier in a power supply?

G3A03

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

G2B05

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

G8C07

26. How does the receiving station respond to an ARQ data mode packet containing errors?

G5B04

27. How many watts of electrical power are used by a 12 VDC light bulb that draws 0.2 amperes?

G2D11

28. Which of the following is typical of the lower HF frequencies during the summer?

G5A10

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

G9C10

30. Which of the following can be adjusted to optimize forward gain, front-to-back ratio, or SWR bandwidth of a Yagi antenna?

G6B09

31. Which of the following is a characteristic of a liquid crystal display?

G6A06

32. Which of the following is a reason not to use wire-wound resistors in an RF circuit?

G0A03

33. How can you determine that your station complies with FCC RF exposure regulations?

G1B04

34. Which of the following transmissions is permitted?

G4B02

35. Which of the following is an advantage of an oscilloscope versus a digital voltmeter?