G4C03
1. What sound is heard from an audio device experiencing RF interference from a single sideband phone transmitter?
G8C13
2. What is indicated on a waterfall display by one or more vertical lines on either side of a data mode or RTTY signal?
G9B05
3. How does antenna height affect the azimuthal radiation pattern of a horizontal dipole HF antenna at elevation angles higher than about 45 degrees?
G8B06
4. What is the total bandwidth of an FM phone transmission having 5 kHz deviation and 3 kHz modulating frequency?
G0B05
5. Which of the following conditions will cause a ground fault circuit interrupter (GFCI) to disconnect AC power?
G7A04
6. What is characteristic of a half-wave rectifier in a power supply?
G2A10
7. Which of the following statements is true of VOX operation versus PTT operation?
G3A09
8. How can high geomagnetic activity benefit radio communications?
G0A02
9. Which of the following is used to determine RF exposure from a transmitted signal?
G1A06
10. Which of the following applies when the FCC rules designate the amateur service as a secondary user on a band?
G7B06
11. What is a shift register?
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?
G1E07
13. In what part of the 2.4 GHz band may an amateur station communicate with non-licensed Wi-Fi stations?
G9D04
14. What is the primary function of antenna traps?
G2D07
15. Which of the following are examples of the NATO Phonetic Alphabet?
G4E02
16. What is the purpose of a corona ball on an HF mobile antenna?
G5C09
17. What is the capacitance of three 100-microfarad capacitors connected in series?
G3C11
18. Which ionospheric region is the most absorbent of signals below 10 MHz during daylight hours?
G8A06
19. Which of the following is characteristic of QPSK31?
G1C07
20. What must be done before using a new digital protocol on the air?
G4B06
21. What is an advantage of a digital multimeter as compared to an analog multimeter?
G1B03
22. Which of the following is a purpose of a beacon station as identified in the FCC rules?
G3B08
23. What does MUF stand for?
G5A10
24. Which of the following devices can be used for impedance matching at radio frequencies?
G7C03
25. What is one reason to use an impedance matching transformer at a transmitter output?
G2C09
26. What does the Q signal "QSL" mean?
G5B14
27. What is the output PEP of 500 volts peak-to-peak across a 50-ohm load?
G2B01
28. Which of the following is true concerning access to frequencies?
G6A03
29. What is the approximate forward threshold voltage of a germanium diode?
G1D03
30. On which of the following band segments may you operate if you are a Technician class operator and have an unexpired Certificate of Successful Completion of Examination (CSCE) for General class privileges?
G9C09
31. In free space, how does the gain of two three-element, horizontally polarized Yagi antennas spaced vertically 1/2 wavelength apart typically compare to the gain of a single three-element Yagi?
G2E01
32. Which mode is normally used when sending RTTY signals via AFSK with an SSB transmitter?
G6B10
33. How does a ferrite bead or core reduce common-mode RF current on the shield of a coaxial cable?
G4D06
34. How much change in signal strength is typically represented by one S unit?
G4A03
35. How does a noise blanker work?
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