1 / 72

Technician Licensing Class

Technician Licensing Class. T 8 A - T 8 D. Valid July 1, 2014 Through June 30, 2018. 1. T 8 A. Single sideband (SSB) is a form of amplitude modulation. T8A01 The most common type of modulation used for VHF packet radio transmission is FM. T8A02. 2. T 8 A.

meyerr
Download Presentation

Technician Licensing Class

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Technician Licensing Class T 8 A - T 8 D Valid July 1, 2014 Through June 30, 2018 1

  2. T 8 A Single sideband (SSB) is a form of amplitude modulation. T8A01 The most common type of modulation used for VHF packet radio transmission is FM. T8A02 2

  3. T 8 A SSB (single sideband) is the voice mode most often used for long-distance (weak signal) contacts on the VHF and UHF bands. T8A03 Frequency modulation (FM) us most commonly used for VHF and UHF repeaters.T8A04 3

  4. T 8 A The type of emission that has the narrowest bandwidth is CW. T8A05 Upper sideband is normally used for 10 meter HF, VHF and UHF single-sideband communications. as our communications mode. T8A06 4

  5. T 8 A The primary advantage of single sideband over FM for voice transmissions is SSB signals have narrower bandwidth. T8A07 5

  6. T 8 A 3 kHz is the approximate bandwidth of a single sideband voice signal. T8A08 6

  7. T 8 A The approximate bandwidth of a VHF repeater FM phone signal is between 10 and 15 kHz. T8A09 The typical bandwidth of an analog fast-scan TV transmission on the 70 cm band is about 6 MHz.T8A10 150 Hz is the approximate maximum bandwidth required to transmit a CQ signal. T8A11 7

  8. T 8 B Any amateur whose license privileges allow them to transmit on the satellite uplink frequency may be the control operator of a station communicating through an amateur satellite or space station. T8B01 The minimum amount of power needed to complete the contact is the amount of power that should be used on the uplink frequency of an amateur satellite or space station. T8B02 8

  9. T 8 B The following are provided by satellite tracking programs: Maps showing the real-time position of the satellite track over the earth; The time, azimuth, and elevation of the start, maximum altitude, and the end of a pass; The apparent frequency of the satellite transmission, including effects of Doppler shift. All of these answers are correct. T8B03 9

  10. T 8 B Any amateur holding Technician Class license or higher, may make contact with an amateur station on the International Space Station using 2 meter and 7- cm band amateur radio frequencies. T8B04 A Satellite beacon is a transmission from a space station that contains information about a satellite. T8B05 10

  11. T 8 B Keplerian elements are inputs to a satellite tracking program.T8B06 Computer programs and websites can show you where and when an amateur satellite or the Space Station will be in range of your ham station. 11

  12. T 8 B With regard to satellite communications, an observed change in signal frequency caused by relative motion between the satellite and the earth station is called Doppler shift. T8B07 12 Doppler Effect

  13. T 8 B When a satellite is operating in mode U/V it means the satellite uplink is in the 70 cm band and the downlink is in the 2 meter band. T8B08 Rotation of the satellite and its antennas cause spin fading when referring to a satellite’s signals.T8B09 Frequency BandsFrequency RangeModes High Frequency 21 - 30 MHz Mode H VHF 144 - 146 MHz Mode V UHF 435 - 438 MHz Mode U L band 1.26 - 1.27 GHz Mode L S band 2.4 - 2.45 GHz Mode S C band 5.8 GHz Mode C X band 10.4 GHz Mode X K band 24 Ghz Mode K 13

  14. T 8 B The initials LEO tell you that the satellite is in a Low Earth Orbit. T8B10 FM packet is a commonly used method of sending signals to and from a digital satellite. T8B11 14

  15. T 8 C To locate sources of noise interference or jamming, use radio direction finding equipment. T8C01 A directional antenna would be useful for a hidden transmitter hunt. T8C02 15

  16. T 8 C A popular operating activity that involves contacting as many stations as possible during a specified period of time is called contesting. T8C03 When contacting another station in a radio contest a good procedure is to send only the minimum information needed for the proper identification and the contest exchange. T8C04 A Grid locator is a letter-number designator assigned to a geographic location.T8C05 16

  17. T 8 C Access to an IRLP node is accomplished by using DTMF signals. T8C06 The maximum power allowed for controlling your model aircraft on the ham radio is 1 watt. T8C07 On-air station ID for radio control model using amateur frequencies require a label with: Licensee’s name Call Sign and address Affixed to the transmitter T8C08 17

  18. T 8 C You might obtain a list of active nodes that use VoIP from a repeater directory. T8C09 Use the keypad to transmit the IRLP node ID to select a specific IRLP node when using a portable transceiver. T8C10 A gateway is the name given to an amateur radio station that is used to connect other amateur stations to the Internet. T8C11 18

  19. T 8 C VoIP as used in amateur radio is a method of delivering voice communications over the Internet using digital techniques. T8C12 The Internet Radio Linking Project (IRLP) is a technique to connect amateur radio systems, such as repeaters, via the Internet using Voice Over Internet Protocol. T8C13 19

  20. T 8 D The following are examples of a digital communications method: Packet; PSK31; MFSK; All of these choices are correct.T8D01 20

  21. T 8 D The term “APRS” means Automatic Packet Reporting System. T8D02 A Global Positioning System receiver provides data to the transmitter when sending automatic position reports from a mobile amateur radio station. T8D03 21

  22. T 8 D An analog fast scan color TV signal is the type of transmission indicated by the term NTSC.T8D04 An application of APRS (Automatic Packet Reporting System) is that it provides real time tactical digital communications in conjunction with a map showing the locations of stations. T8D05 The abbreviation PSK means Phase Shift Keying. T8D06 PSK31 is a low-rate data transmission mode. T8D07 22

  23. T 8 D The following may be included in packet transmissions: A checksum which permits error detection; A header which contains the call sign of the station to which the information is being sent; Automatic repeat request in case of error; All of these choices are correct. T8D08 International Morse code is the code used when sending CW in the amateur bands. T8D09 23

  24. T 8 D The following devices can be used to transmit CW in the amateur bands: Straight Key; Electronic keyer; Computer keyboard; All of these choices are correct. T8D10 24

  25. T 8 D An ARQ transmission system is a digital scheme whereby the receiving station detects errors and sends a request to the sending station to retransmit the information.T8D11 25

  26. Element 2 Technician Class Question Pool T 8 A – T 8 D Valid July 1, 2014 Through June 30, 2018

  27. T8A01Which of the following is a form of amplitude modulation? Spread-spectrum Packet radio Single sideband Phase shift keying 27

  28. T8A02What type of modulation is most commonly used for VHF packet radio transmissions? FM SSB AM Spread Spectrum 28

  29. T8A03Which type of voice mode is most often used for long-distance (weak signal) contacts on the VHF and UHF bands ? FM DRM SSB PM 29

  30. T8A04Which type of modulation is most commonly used for VHF and UHF voice repeaters? AM SSB PSK FM 30

  31. T8A05Which of the following types of emission has the narrowest bandwidth? FM voice SSB voice CW Slow-scan TV 31

  32. T8A06Which sideband is normally used for 10 meter HF, VHF and UHF single-sideband communications? Upper sideband Lower sideband Suppressed sideband Inverted sideband 32

  33. T8A07What is the primary advantage of single sideband over FM for voice transmissions? SSB signals are easier to tune SSB signals are less susceptible to interference SSB signals have narrower bandwidth All of these choices are correct 33

  34. T8A08 What is the approximate bandwidth of a single sideband voice signal? 1 kHz 3 kHz 6 kHz 15 kHz 34

  35. T8A09What is the approximate bandwidth of a VHF repeater FM phone signal? Less than 500 Hz About 150 kHz Between 10 and 15 kHz Between 50 and 125 kHz 35

  36. T8A10What is the typical bandwidth of analog fast-scan TV transmissions on the 70 cm band ? More than 10 MHz About 6 MHz About 3 MHz About 1 MHz 36

  37. T8A11What is the approximate maximum bandwidth required to transmit a CW signal? 2.4 kHz 150 Hz 1000 Hz 15 kHz 37

  38. T8B01Who may be the control operator of a station communicating through an amateur satellite or space station? Only an Amateur Extra Class operator A General Class licensee or higher licensee who has a satellite operator certification Only an Amateur Extra Class operator who is also an AMSAT member Any amateur whose license privileges allow them to transmit on the satellite uplink frequency 38

  39. T8B02How much transmitter power should be used on the uplink frequency of an amateur satellite or space station? The maximum power of your transmitter The minimum amount of power needed to complete the contact No more than half the rating of your linear amplifier Never more than 1 watt 39

  40. T8B03Which of the following are provided by satellite tracking programs? Maps showing the real-time position of the satellite track over the earth The time, azimuth, and elevation of the start, maximum altitude, and end of a pass The apparent frequency of the satellite transmission, including effects of Doppler shift All of these choices are correct 40

  41. T8B04Which amateur stations may make contact with an amateur station on the International Space Station using 2 meter and 70 cm band amateur radio frequencies? Only members of amateur radio clubs at NASA facilities Any amateur holding a Technician or higher class license Only the astronaut's family members who are hams You cannot talk to the ISS on amateur radio frequencies 41

  42. T8B05What is a satellite beacon? The primary transmit antenna on the satellite An indicator light that that shows where to point your antenna A reflective surface on the satellite A transmission from a space station that contains information about a satellite 42

  43. T8B06Which of the following are inputs to a satellite tracking program? The weight of the satellite The Keplerian elements The last observed time of zero Doppler Shift All of these answers are correct 43

  44. T8B07With regard to satellite communications, what is Doppler shift? A change in the satellite orbit A mode where the satellite receives signals on one band and transmits on another An observed change in signal frequency caused by relative motion between the satellite and the earth station A special digital communications mode for some satellites 44

  45. T8B08What is meant by the statement that a satellite is operating in mode U/V? The satellite uplink is in the 15 meter band and the downlink is in the 10 meter band The satellite uplink is in the 70 cm band and the downlink is in the 2 meter band The satellite operates using ultraviolet frequencies The satellite frequencies are usually variable 45

  46. T8B09 What causes spin fading when referring to satellite signals? Circular polarized noise interference radiated from the sun Rotation of the satellite and its antennas Doppler shift of the received signal Interfering signals within the satellite uplink band 46

  47. T8B10What do the initials LEO tell you about an amateur satellite? The satellite battery is in Low Energy Operation mode The satellite is performing a Lunar Ejection Orbit maneuver The satellite is in a Low Earth Orbit The satellite uses Light Emitting Optics 47

  48. T8B11 What is a commonly used method of sending signals to and from a digital satellite? USB AFSK PSK31 FM Packet WSJT 48

  49. T8C01Which of the following methods is used to locate sources of noise interference or jamming? Echolocation Doppler radar Radio direction finding Phase locking 49

  50. T8C02Which of these items would be useful for a hidden transmitter hunt? Calibrated SWR meter A directional antenna A calibrated noise bridge All of these choices are correct 50

More Related