E8A07
1. What determines the PEP-to-average power ratio of an unprocessed single-sideband phone signal?
E3B02
2. What is the approximate maximum range for signals using transequatorial propagation?
E7A06
3. What is a characteristic of a monostable multivibrator?
E6C10
4. In Figure E6-3, which is the schematic symbol for a NOR gate?
E7F01
5. What is meant by "direct sampling" in software defined radios?
E4C07
6. What does the MDS of a receiver represent?
E8B08
7. What describes orthogonal frequency-division multiplexing (OFDM)?
E9E02
8. What antenna matching system matches coaxial cable to an antenna by connecting the shield to the center of the antenna and the conductor a fraction of a wavelength to one side?
E1E05
9. What must the VE team do with the application form if the examinee does not pass the exam?
E5B03
10. How is impedance in polar form converted to an equivalent admittance?
E4B03
11. Which S parameter is equivalent to forward gain?
E9G08
12. How is a Smith chart normalized?
E4A02
13. Which of the following parameters does a spectrum analyzer display on the vertical and horizontal axes?
E2C10
14. Why do DX stations often transmit and receive on different frequencies?
E9B06
15. What is the elevation angle of peak response in the antenna radiation pattern shown in Figure E9-2?
E1F08
16. Which of the following types of amateur station communications are prohibited?
E1A04
17. May an Extra class operator answer the CQ of a station on 3.601 MHz LSB phone?
E7E10
18. How does a diode envelope detector function?
E9D08
19. What happens as the Q of an antenna increases?
E7B01
20. For what portion of the signal cycle does each active element in a push-pull, Class AB amplifier conduct?
E6F04
21. What is the photovoltaic effect?
E9C02
22. What type of radiation pattern is created by two 1/4-wavelength vertical antennas spaced 1/4- wavelength apart and fed 90 degrees out of phase?
E1D05
23. What must be posted at the location of a station being operated by telecommand on or within 50 kilometers of the Earth's surface?
E5D06
24. What parasitic characteristic creates an inductor's self-resonance?
E9F12
25. What impedance does a 1/4-wavelength transmission line present to an RF generator when the line is open at the far end?
E2A12
26. What is the purpose of digital store-and-forward functions on an amateur radio satellite?
E1C10
27. What is the maximum mean power level for a spurious emission below 30 MHz with respect to the fundamental emission?
E6A05
28. How does DC input impedance at the gate of a field-effect transistor (FET) compare with that of a bipolar transistor?
E5A03
29. What is the magnitude of the impedance of a series RLC circuit at resonance?
E7C11
30. Which of the following measures a filter's ability to reject signals in adjacent channels?
E8C12
31. What factors affect the bandwidth of a transmitted CW signal?
E7G12
32. What is an operational amplifier?
E6B01
33. What is the most useful characteristic of a Zener diode?
E7D03
34. What device is used as a stable voltage reference?
E4E03
35. Which of the following types of noise are removed by a noise blanker?
E6D02
36. What is the equivalent circuit of a quartz crystal?
E2E13
37. Which of these digital modes has the highest data throughput under clear communication conditions?
E8D11
38. What is one advantage of using ASCII code for data communications?
E9A09
39. What is antenna efficiency?
E4D12
40. What is the link margin in a system with a transmit power level of 10 W (+40 dBm), a system antenna gain of 10 dBi, a cable loss of 3 dB, a path loss of 136 dB, a receiver minimum discernable signal of -103 dBm, and a required signal-to-noise ratio of 6 dB?
E0A03
41. Over what range of frequencies are the FCC human body RF exposure limits most restrictive?
E7H06
42. Which of these functions can be performed by a phase-locked loop?
E5C02
43. How are impedances described in polar coordinates?
E9H05
44. What challenge is presented by a small wire-loop antenna for direction finding?
E2D01
45. Which of the following digital modes is designed for meteor scatter communications?
E2B06
46. What is vestigial sideband modulation?
E1B11
47. What does PRB-1 require of state and local regulations affecting amateur radio antenna size and structures?
E3A02
48. What characterizes libration fading of an EME signal?
E6E12
49. Why are DIP through-hole package ICs not typically used at UHF and higher frequencies?
E3C01
50. What is the cause of short-term radio blackouts?
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