Frenzel Self-test in Radio Transmitters – Answers

Below are the answers key for Frenzel Self-test in Chapter 6: Radio Transmitters 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. oscillator

2. continuous-wave, CW

3. crystal oscillator

4. buffer

5. drivers

6. final

7. speech-processing

8. frequency multipliers

9. mixer

10. linear

11. class C

12. AM, SSB

13. class C

14. A, B, AB

15. 27

16. 360

17. base-collector capacitance

18. parasitic oscillation

19. neutralization

20. true

21. bridge

22. true

23. push-pull

24. 90, 150

25. pulses

26. tuned or resonant circuit

27. 60, 85

28. harmonics

29. frequency multipliers

30. 180 [2(3)(4)(5) = 120; 120(1.5)=180 MHz]

31. 50.4 [28(1.8) = 50.4 W]

32. equals

33. L network

34.pi ( ), T

35. low-pass

36. Q

37. true

38. L = 108 nH, C = 558 pF

39. L = 106 nH, C1 = 13.5 pF, C2= 34 pF

40. 450

41. 2:1

42. autotransformer

43. toroid

44. balun

45. broadband

46. clipping, compression

47. prevent over modulation and distortion, eliminate out-of-band operation

48. clipper

49. smooth out distortion caused by clipping, restrict signal bandwidth

50. splatter

51. gain

52. power

53. rectifying, filtering

54. collector current

55. automatic gain control

56. more

57. true

Complete List of Self-test and Reviewers in Communications Electronics

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