Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E3C02
1. What is indicated by a rising A or K index?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E2E02
2. What do the letters FEC mean as they relate to digital operation?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E5B08
3. What is the phase angle between the voltage across and the current through a series RLC circuit if XC is 100 ohms, R is 100 ohms, and XL is 75 ohms?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E6A04
4. What is the name given to an impurity atom that adds holes to a semiconductor crystal structure?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E4E11
5. Which is the most likely cause if you are hearing combinations of local AM broadcast signals within one or more of the MF or HF ham bands?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E2D03
6. Which of the following digital modes is especially useful for EME communications?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E4A03
7. Which of the following test instrument is used to display spurious signals and/or intermodulation distortion products in an SSB transmitter?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E7D15
8. What is the purpose of a "step-start" circuit in a high voltage power supply?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E5D14
9. What is reactive power?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E4D01
10. What is meant by the blocking dynamic range of a receiver?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E2A08
11. Why should effective radiated power to a satellite which uses a linear transponder be limited?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E6E05
12. Which of the following noise figure values is typical of a low-noise UHF preamplifier?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E7C08
13. Which of the following factors has the greatest effect in helping determine the bandwidth and response shape of a crystal ladder filter?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E3A16
14. Which of the following best describes electromagnetic waves traveling in free space?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E7A04
15. How many flip-flops are required to divide a signal frequency by 4?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E2C01
16. Which of the following is true about contest operating?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E6F11
17. What is the approximate open-circuit voltage produced by a fully-illuminated silicon photovoltaic cell?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E9H09
18. Which of the following describes the construction of a receiving loop antenna?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E9B05
19. What type of antenna pattern over real ground is shown in Figure E9-2?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E9D03
20. Where should a high Q loading coil be placed to minimize losses in a shortened vertical antenna?
E1B11
21. What is the permitted mean power of any spurious emission relative to the mean power of the fundamental emission from a station transmitter or external RF amplifier installed after January 1, 2003 and transmitting on a frequency below 30 MHZ?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E7E04
22. What is one way a single-sideband phone signal can be generated?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E9C07
23. What is the approximate feed point impedance at the center of a two-wire folded dipole antenna?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E9F10
24. What impedance does a 1/8 wavelength transmission line present to a generator when the line is shorted at the far end?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E4B02
25. What is an advantage of using a bridge circuit to measure impedance?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E7F09
26. Why is an anti-aliasing digital filter required in a digital decimator?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E4C05
27. What does a value of -174 dBm/Hz represent with regard to the noise floor of a receiver?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E8D06
28. Which of the following indicates likely overmodulation of an AFSK signal such as PSK or MFSK?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E5A06
29. What is the magnitude of the circulating current within the components of a parallel LC circuit at resonance?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E8C04
30. What technique is used to minimize the bandwidth requirements of a PSK31 signal?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E6C09
31. What is a Programmable Logic Device (PLD)?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E7G04
32. What is meant by the term op-amp input offset voltage?
E1A01
33. When using a transceiver that displays the carrier frequency of phone signals, which of the following displayed frequencies represents the highest frequency at which a properly adjusted USB emission will be totally within the band?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E0A06
34. Why are there separate electric (E) and magnetic (H) field MPE limits?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E6B08
35. Which of the following describes a type of semiconductor diode?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E8A01
36. What is the name of the process that shows that a square wave is made up of a sine wave plus all of its odd harmonics?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E5C01
37. Which of the following represents a capacitive reactance in rectangular notation?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E8B04
38. What is the modulation index of an FM-phone signal having a maximum carrier deviation of plus or minus 6 kHz when modulated with a 2 kHz modulating frequency?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E7H12
39. Which of the following must be done to insure that a crystal oscillator provides the frequency specified by the crystal manufacturer?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E9A16
40. What is the effective radiated power relative to a dipole of a repeater station with 200 watts transmitter power output, 4 dB feed line loss, 3.2 dB duplexer loss, 0.8 dB circulator loss, and 10 dBd antenna gain?
E1F10
41. What is the maximum permitted transmitter peak envelope power for an amateur station transmitting spread spectrum communications?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E9E09
42. Which of these matching systems is an effective method of connecting a 50 ohm coaxial cable feed line to a grounded tower so it can be used as a vertical antenna?
E1C07
43. What is meant by local control?
E1E05
44. What is the minimum passing score on amateur operator license examinations?
E1D08
45. Which VHF amateur service bands have frequencies available for space stations?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E2B01
46. How many times per second is a new frame transmitted in a fast-scan (NTSC) television system?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E9G09
47. What third family of circles is often added to a Smith chart during the process of solving problems?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E3B14
48. What happens to linearly polarized radio waves that split into ordinary and extraordinary waves in the ionosphere?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E7B04
49. Where on the load line of a Class A common emitter amplifier would bias normally be set?
Study material for this question can be found in the following resources:
Additional reference material is listed on my Study Materials page.
E6D09
50. What devices are commonly used as VHF and UHF parasitic suppressors at the input and output terminals of a transistor HF amplifier?
Warning! You skipped 0 question(s).