T3B05 How does the wavelength of a radio wave relate to its frequency?

1. Exam-prep Jepperdee:2014 Tech Edition…a game to help prepare contestants and audience for the entry-level ham examproduced by Bob Raffaele, W2XM

2. This game is to be played in the PowerPoint “slide show” mode. Operation of the game is almost intuitive, and you can make up your own rules. Each numeric point value on either game board is a hyperlink which reveals a question. Advancing the game one slide past the question (by clicking the screen) displays the answer. “Done” on the answer slide returns you to the game board. “SFJ” (clickable) stands for “semi-final jepperdee” and “FJ” (also clickable) means “final jepperdee;” clicking anywhere on the screen reveals the final- or semi-final-jepperdee question. There is one daily double on each board; click on either “daily or “double.” For most fun, appropriate hardware (lights, push-buttons, sounder, lockout circuitry) should be used. A diagram is available from the author.

5. T3B05 How does the wavelength of a radio wave relate to its frequency? .

6. The wavelength gets shorter as the frequency increases. done

7. T5B05What number of watts equals 500 mW? .

8. 0.5 watts done

9. T5C06What does the abbreviation “RF” refer to? .

10. Radio frequency signals of all types done

11. T8A03 Which type of voice mode is most often used for long-distance (weak signal) contacts on the VHF and UHF bands? .

12. SSB done

13. T2B05 What deter-mines the amount of deviation of an FM (as opposed to PM) signal? .

14. The amplitude of the modulating signal done

15. T0A04What is the purpose of a fuse in an electrical circuit? .

16. To interrupt power in case of overload done

17. T6B10 What are the three electrodes of a PNP or NPN transistor? .

18. Emitter, base, and collector done

19. T5A05 What is the elec-tricalterm for the electromotive force (EMF) that causes electron flow? .

20. Voltage done

21. T5C08What is the formula used to calculate electrical power in a DC circuit? .

22. Power (P) equals voltage (E) multiplied by current (I)orP = E I done

23. T5D08 What is the current flowing through a 100-ohm resistor connected across 200 volts? .

24. 2 amperes done

25. T3A06What term describes the fluttering sound from mobile sta-tionsthat are moving while transmitting? .

26. Picket fencing done

27. T9B05 What generally happens as the frequency of a signal going through coaxial cable is increased? .

28. The loss increases. done

29. T4A05 Where should an in-line SWR meter be connected to monitor the SWR of the antenna system? .

30. In series with the feed line, between the transmitter and antenna done

31. T7C08What instrument other than an SWR meter could you use to determine if a feed line and antenna are properly matched? .

32. Directional wattmeter done

33. T5B10What is the approx. amount of change (in dB) of a power decrease from 12 watts to 3 watts? .

34. -6 dB done

35. T5A06 How much voltage does a mobile transceiver usually require? .

36. About 12 volts done

37. T2B03What type of receiver audio muting is controlled by the absence of an RF signal? .

38. Carrier squelch done

39. T4A04 Where must a filter be installed to reduce harmonic emissions from your station? .

40. Between the transmitter and the antenna done

41. T7A10 What device increases the low-power output from a handheld transceiver? .

42. An RF power amplifier done

43. T8D07What is PSK31? .

44. A low-rate data transmission mode done

45. T1A07 What is the FCC Part 97 definition of telemetry? .

46. A 1-way xmission of measurements to somewhere remote from the measuring instrument done

47. T2B10What Q signal indicates that you are receiving interference from other stations? .

48. QRM done

49. T2C12What is the Amateur Radio Emergency Service (ARES)? .

50. Hams who’ve volun-tarily registered their qual. and equip. for communications duty in the public svc. done