E8C14
1. What type of addresses do nodes have in a mesh network?
E3A02
2. What characterizes libration fading of an EME signal?
E8A07
3. What determines the PEP-to-average power ratio of an unprocessed single-sideband phone signal?
E5A13
4. What is an effect of increasing Q in a series resonant circuit?
E8D10
5. What are some of the differences between the Baudot digital code and ASCII?
E7D13
6. Which of the following calculates power dissipated by a series linear voltage regulator?
E5B07
7. What is the phase angle between the voltage across and the current through a series RLC circuit if XC is 500 ohms, R is 1 kilohm, and XL is 250 ohms?
E7F10
8. What aspect of receiver analog-to-digital conversion determines the maximum receive bandwidth of a direct-sampling software defined radio (SDR)?
E8B08
9. What describes orthogonal frequency-division multiplexing (OFDM)?
E4A06
10. What is the effect of aliasing on a digital oscilloscope when displaying a waveform?
E1E03
11. What is a Volunteer Examiner Coordinator?
E2C05
12. What is the function of a DX QSL Manager?
E4E06
13. What type of electrical interference can be caused by computer network equipment?
E9D12
14. What is the purpose of making a Yagi's parasitic elements either longer or shorter than resonance?
E1B08
15. What limitations may the FCC place on an amateur station if its signal causes interference to domestic broadcast reception, assuming that the receivers involved are of good engineering design?
E4D09
16. What is the purpose of the preselector in a communications receiver?
E3B06
17. On which of the following amateur bands is long-path propagation most frequent?
E1A05
18. Who must be in physical control of the station apparatus of an amateur station aboard any vessel or craft that is documented or registered in the United States?
E6D01
19. What is piezoelectricity?
E2A12
20. What is the purpose of digital store-and-forward functions on an amateur radio satellite?
E1D08
21. Which VHF amateur bands have frequencies authorized for space stations?
E9C01
22. What type of radiation pattern is created by two 1/4-wavelength vertical antennas spaced 1/2- wavelength apart and fed 180 degrees out of phase?
E7A02
23. What is the function of a decade counter?
E6A05
24. How does DC input impedance at the gate of a field-effect transistor (FET) compare with that of a bipolar transistor?
E9A07
25. What is the effective isotropic radiated power (EIRP) of a repeater station with 200 watts transmitter power output, 2 dB feed line loss, 2.8 dB duplexer loss, 1.2 dB circulator loss, and 7 dBi antenna gain?
E9H04
26. What is the purpose of placing an electrostatic shield around a small-loop direction-finding antenna?
E6E03
27. Which of the following materials supports the highest frequency of operation when used in MMICs?
E6F01
28. What absorbs the energy from light falling on a photovoltaic cell?
E2E08
29. Which of the following HF digital modes can be used to transfer binary files?
E4C05
30. What does a receiver noise floor of -174 dBm represent?
E0A02
31. When evaluating RF exposure levels from your station at a neighbor's home, what must you do?
E9G09
32. What third family of circles is often added to a Smith chart during the process of designing impedance matching networks?
E7G01
33. What is the typical output impedance of an op-amp?
E4B05
34. What three test loads are used to calibrate an RF vector network analyzer?
E5D12
35. What is reactive power?
E1F01
36. On what frequencies are spread spectrum transmissions permitted?
E7H04
37. How is positive feedback supplied in a Colpitts oscillator?
E6B07
38. What causes a junction diode to fail from excessive current?
E9E02
39. 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?
E3C07
40. Which of the following indicates the greatest solar flare intensity?
E7E10
41. How does a diode envelope detector function?
E9F07
42. How does parallel conductor transmission line compare to coaxial cable with a plastic dielectric?
E1C07
43. What notifications must be given before transmitting on the 630- or 2200-meter bands?
E7C10
44. Which of the following filters is used in a 2-meter band repeater duplexer?
E2D08
45. What type of packet frame is used to transmit APRS beacon data?
E2B12
46. What signals SSTV receiving software to begin a new picture line?
E6C08
47. In Figure E6-3, which is the schematic symbol for a NAND gate?
E9B03
48. What is the front-to-side ratio of the antenna radiation pattern shown in Figure E9-1?
E7B08
49. Why are switching amplifiers more efficient than linear amplifiers?
E5C04
50. What type of Y-axis scale is most often used for graphs of circuit frequency response?
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