Below are the answers key for Frenzel Self-test in Chapter 14: Modern Communications Applications from the book COMMUNICATIONS ELECTRONICS by Louis E. Frenzel. Make sure to familiarize each and every questions to increase the chance of passing the ECE Board Exam.
1. scanning
2. telephone lines
3. C I TT
4. 2300, 1500
5. 2
6. charge coupled device
7. 3
8. handshaking
9. thermal
10. 9600
11. 200
12.PSK , Q AM
13. half
14. 56K, 400
15. true
16. false
17. true
18. cells
19. mobile telephone switching office
20.more spectrum space at the higher frequencies, frequency reuse of channels.
21. 666
22. true
23. FM
24. 3
25. 825, 845
26. 870, 890
27. 30
28. 45
29. frequency synthesizer
30. 45,82.2, 10.7,0.455
31. change or decrease
32. duplexer or isolator
33. false
34. MT SO
35. transmitter power level received signal level
36. transmit frequency, receive frequency, transmitter power.
37. receive signal strength indicator (RSSI )
38. 82.656
39. logic
40. two
41. control
42. distance or range
43. reflection
44. bearing or azimuth
45. 6.18
46. 3.5
47. 6.1
48. 1.15
49. short
50. microwave
51. true
52. pulse, continuous wave
53. Doppler
54. 589
55. false
56. duplexer
57. magnetron
58. spark gap
59. CRT
60. plan position indicator (PPI )
61. phased array
62. 6 MHz
63. amplitude, frequency
64. 4.5 MHz
65. VHF, UHF
66. luminance Y
67. vidicon, C C D
68. scanning
69. red, green, and blue
70. 525
71. 262 ½
72. 60 (59.94) and 30 (20.97) Hz
73.15,734 Hz (63.6 .s)
74. sync pulses
75. diplexer
76. red, green, blue
77. I, Q
78. balanced modulator, DSB suppressed in-phase and quadrature carrier AM
79. 3.58 MHz
80. phase
81. Y or luminance
82. frequency synthesizer
83. remote control
84. 589.75 MHz
85. 4 MHz
86. 41.25, 45.75 MHz
87. surface acoustic wave (SAW)
88. vestigial sideband AM
89. 4.5 MHz
90. quadrature detector and differential peak detector
91. balanced
92. color burst
93. sync separator
94. 15,734 Hz
95. 59.94 Hz, integrating
96. linear sawtooth
97. yoke
98. cathode, electron gun
99. magnetic fields, yoke coils
100. three
101. convergence
102. horizontal sweep output
103. fly back
104. head end
105. trunk, feeder
106. drops, 75
107. mixer
108. amplifiers
109. mixer, frequency synthesizer channel selector
110. 3, 4, antenna jack
111. less noise and signal attenuation for a better picture, greater reliability of reception, premium cable programming, and no need for an antenna
Complete List of Self-test and Reviewers in Communications Electronics
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