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W8UM Technician Class License Review

W8UM Technician Class License Review. de Bill AA8RW becher@eecs.umich.edu http://eecs.umich.edu/~becher/test/ http://eecs.umich.edu/~becher/test/TechReview.ppt 20 October 2007. Our purpose today:. Prepare to pass the exam -. It takes commitment on your part

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W8UM Technician Class License Review

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  1. W8UMTechnician Class License Review de Bill AA8RW becher@eecs.umich.edu http://eecs.umich.edu/~becher/test/ http://eecs.umich.edu/~becher/test/TechReview.ppt 20 October 2007

  2. Our purpose today: Prepare to pass the exam - • It takes commitment on your part • Ultimately it’s your effort that will make the difference • I’m here to explain theory & answer questions • If you follow my advice • You’ll pass – guaranteed • It won’t require much effort • But it’s up to you to cooperate and study • If you’re not willing to put forth the effort Don’t plan on a license

  3. FCC Technician Exam • Element 2 • 10 subelements • 35 groups => 35 questions (1 per group) • Question pool (pp. 9-1 thru 9-68, ARRL License Manual) • Total number of questions -- 396 • Good news! Actually only 391 • 5 withdrawn T2A02 T3B11 T5D06 T6B09 T7A08

  4. “Examanship” Usually 1 or 2 are obviously wrong 2 with similar words or numbers Use logic whenever possible Some are strictly from memory Try to memorize Look for memory ‘tricks’ I’ll try to help Everyone should pass (only 26 correct out of 35 required) If you’re a perfectionist Master everything -- recommended Memorize all answers -- if you insist on forgoing the concept of knowledge Ultimately -- the answers are your responsibility

  5. T9C10 Why is the outer sheath of most coaxial cables black in color? A. It is the cheapest color to use B. To see nicks and cracks in the cable C. Black cables have less loss D. Black provides protection against ultraviolet damage >>

  6. Caution • Read all choices • Wrong choices will have more meaning as you become smarter • By then, know why choices are wrong, as well as why correct • Do not memorize position of correct choice • FCC exam choices will be in a different sequence

  7. Our primary reference today: 1

  8. R Volts Amps dc, ac, frequency Resistance Power Conductors Insulators

  9. E I R

  10. P I E More

  11. T4E (cont’d) Micro-, milli-, unit, kilo- & mega-

  12. 300 f l Frequency, radio waves, speed of light Wavelength Wavelength & frequency

  13. in out in > Radio components out Batteries

  14. Electric shock Fuses Emergency disconnects Lightening More

  15. T0A (cont’d) Storage Batteries Capacitors

  16. Antenna/tower safety Electric wires Guy wires Airports Grounds Corrosion

  17. 300 f l L (ft) = 468 / f (MHz) 6, 50, 112 or 236 inches 112, 50, 19 or 12 inches

  18. Radiation protection Max power & evaluation RF exposure Duty cycle Frequency Prevention Transmission injuries

  19. SWR Matching Losses

  20. fL 0 f fC fU BW S(t) = A sin (wt + f)

  21. 5 V Key up 0 V Key down 7120 kHz VFO-Controlled CW Transmitter Called a linear when external 7.10 - 7.15 kHz Fig 8.6B, p 8.4 time

  22. Packet radio Morse code (CW) Q-signals

  23. Frequency offset Coordination Courtesy tone Closed repeaters Linked repeaters Simplex operation

  24. Receiver overload Telephone interference TV interference Correcting interference Neighbor’s interference problem More

  25. T5D (cont’d) Mobile whine Feedback Weak repeater signal Digital noise immunity

  26. Starting a QSO Calling CQ More

  27. T3A (cont’d) Repeater QSO Station ID Phonetic alphabet

  28. Phone Conversation • Avoid cute phrases when identifying your station use phonetics • It is important that you be understood correctly, especially by non-English-speaking amateurs • The letters are more instantly recognized too

  29. Band plans Repeater frequency coordination Responsibility Minimum power Mode restrictions

  30. Good practices Be helpful Break into conversation Obscene & indecent words Racial or ethnic slurs More

  31. T3C (cont’d) Check before, keep it short No priority frequencies License class frequencies

  32. http://www.arrl.org/FandES/field/regulations/Hambands_color.pdfhttp://www.arrl.org/FandES/field/regulations/Hambands_color.pdf

  33. Front end overload TV interference Telephone interference Malicious interference More

  34. T3D (cont’d) Dummy load Frequency non-exclusivity

  35. Ham Radio purpose Operator/ station Volunteer examiner CSCE FCC Harmful interference

  36. Call signs KD8HBO -- Oct 15, 2007 Vanity & club call signs ITU Reciprocity agreements

  37. 300 f l License authorization Operation authorization Primary users Frequency bands 49.00, 52.525, 28.50, 222.15 2, 20, 14, 6 455.350, 146.520, 443.350, 222.250 2315, 1296, 3390, 146.52 15, 10, 2, 1.25

  38. FCC rules Who When Renewal e.g., verify at http://www.arrl.org/ Up-to-date address

  39. Broadcasts Coded messages Indecent & obscene Business

  40. Unidentifiedmessages Call sign identification Special events When How Visits & upgrades

  41. Control operator Repeaters Local, remote & automatic Location One license

  42. Guest operation Family use Business use & compensation Other regulations

  43. Priorities Rules Frequency usage Emergency reports More

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