1 / 38

Technician Licensing Class

Technician Licensing Class. Your Computer Goes Ham Digital! Section 17. Your Computer Goes Ham Digital!. T8D9 The code used when sending CW in the amateur bands is International Morse. T8D10 The following devices can be used to transmit CW in the amateur bands: Straight Key

thai
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 Your Computer Goes Ham Digital! Section 17

  2. Your Computer Goes Ham Digital! T8D9The code used when sending CW in the amateur bands is International Morse. T8D10The following devices can be used to transmit CW in the amateur bands: Straight Key Electronic Keyer Computer Keyboard T8D1The following are examples of digital communications methods. Packet PSK31 MFSK

  3. Your Computer Goes Ham Digital! T4A6A terminal node controller would be connected between a transceiver and computer in a packet radio station. A Packet Radio System. Terminal Node Controllers Terminal Node Controllers (TNCs) are also Packet Controllers

  4. Your Computer Goes Ham Digital! T4A7The sound card provides audio to the microphone input and converts received audio to digital form when conducting digital communications using a computer. T8D8Packet transmissions may include: A check sum 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. Laptop, TNC, and Handheld comprise Packet Station.

  5. Your Computer Goes Ham Digital! T8D11A "parity" bit is an extra code element used to detect errors in received data. T7B12When applied to digital communications systems, the acronym "BER" means Bit Error Rate. • Packets usually stored and forwarded, via satellite or space station • T3A10Error rates are likely to increase on VHF or UHF data signals propagated over multiple paths. • T8B11A commonly used method of sending signals to and from a digital satellite is FM Packet.

  6. Your Computer Goes Ham Digital! T8D2The term APRS means Automatic Position Reporting System. Kenwood dual bander plugged into the Avmap G5 GPS position display.

  7. Your Computer Goes Ham Digital! T8D3A Global Positioning System receiver is normally used when sending automatic location reports via amateur radio. T8D6The abbreviation PSK mean Phase Shift Keying. T8D7PSK31 is a low-rate data transmission mode. PSK-31 transmission rate is about normal typing speed. Keypad on this rig’s top corner and on back of microphone. (Not necessarily this way on all rigs.) Some radios decode RTTY with no additional hardware required!

  8. Your Computer Goes Ham Digital! T8C11A gateway is the name given to an amateur radio station that is used to connect other amateur stations to the Internet. Similar to a Gateway in connection to a computer network T8C9You might obtain a list of active nodes that use VoIP from a repeater directory. The Internet is your best source. (But this is the question for the exam.) T8C10You can select a specific IRLP node when using a portable transceiver by use of the keypad to transmit the IRLP node ID.

  9. Your Computer Goes Ham Digital!

  10. T8C8It is required that a label indicating the licensee's name, call sign and address must be affixed to the transmitter in place of on-air station identification when sending signals to a radio control model using amateur frequencies. Your Computer Goes Ham Digital! Licensee’s call sign

  11. Your Computer Goes Ham Digital! T8C7The maximum power allowed when transmitting telecommand signals to radio controlled models is 1 watt. Telecommand signals are unidentified commands permitted by rule. Hams can use frequencies on the 6-Meter Band to radio control a model aircraft.

  12. Your Computer Goes Ham Digital! T8D4The type of transmission indicated by the term NTSC is an analog fast scan color TV signal. When you’re ready, you can add the fun of ATV to your ham shack.

  13. Take Aways • International Morse code is used when sending CW in the amateur bands. • ALL of the following can be used to transmit CW in the amateur bands: • Straight Key • Electronic Keyer • Computer Keyboard • ALL of the following are examples of digital communication methods: • Packet • PSK31 • MFSK

  14. Take Aways • Terminal node controller would be connected between a transceiver and computer in a packet radio station. • When conducting digital communications, the computer's sound card provides audio to the microphone input and converts received audio to digital form. • The type of transmission indicated by the term NTSC is an analog fast scan color TV signal. • ALL of the following may be included in packet transmissions: • A check sum 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

  15. Take Aways • A "parity" bit is an extra code element used to detect errors in received data. • The acronym "BER" means Bit Error Rate when applied to digital communications systems. • Error rates are likely to increase if VHF or UHF data signals propagate over multiple paths. • A commonly used method of sending signals to and from a digital satellite is FM Packet. • The term APRS means Automatic Position Reporting System.

  16. Take Aways • A Global Positioning System receiver is normally used when sending automatic location reports via amateur radio. • The abbreviation PSK means Phase Shift Keying. • PSK31 is a low-rate data transmission mode. • A gateway is an amateur radio station that is used to connect other amateur stations to the Internet. • You might obtain a list of active nodes that use VoIP from a repeater directory.

  17. Take Aways • You select a specific IRLP node when using a portable transceiver by using the keypad to transmit the IRLP node ID. • A label indicating the licensee's name, call sign and address must be affixed to the transmitter in place of on-air station identification when sending signals to a radio control model using amateur frequencies. [97.215(a)] • The maximum power allowed when transmitting telecommand signals to radio controlled models is 1 watt. [97.215(c)]

  18. Element 2 Technician Class Question Pool Element 2 Technician Class Question Pool Your Computer Goes Ham Digital Valid July 1, 2010 Through June 30, 2014

  19. T8D09 What code is used when sending CW in the amateur bands? • Baudot • Hamming • International Morse • Gray

  20. T8D10 Which of the following can be used to transmit CW in the amateur bands? • Straight Key • Electronic Keyer • Computer Keyboard • All of these choices are correct

  21. T8D01 Which of the following is an example of a digital communications method? • Packet • PSK31 • MFSK • All of these choices are correct

  22. T4A06 Which of the following would be connected between a transceiver and computer in a packet radio station? • Transmatch • Mixer • Terminal node controller • Antenna

  23. T4A07 How is the computer’s sound card used when conducting digital communications using a computer? • The sound card communicates between the computer CPU and the video display • The sound card records the audio frequency for video display • The sound card provides audio to the microphone input and converts received audio to digital form • All of these choices are correct

  24. T8D08 Which of the following may be included in packet transmissions? • A check sum 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

  25. T8D11 What is a "parity" bit? • A control code required for automatic position reporting • A timing bit used to ensure equal sharing of a frequency • An extra code element used to detect errors in received data • A "triple width" bit used to signal the end of a character

  26. T7B12 What does the acronym "BER" mean when applied to digital communications systems? • Baud Enhancement Recovery • Baud Error Removal • Bit Error Rate • Bit Exponent Resource

  27. T3A10 What may occur if VHF or UHF data signals propagate over multiple paths? • Transmission rates can be increased by a factor equal to the number of separate paths observed • Transmission rates must be decreased by a factor equal to the number of separate paths observed • No significant changes will occur if the signals are transmitting using FM • Error rates are likely to increase

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

  29. T8D02 What does the term APRS mean? • Automatic Position Reporting System • Associated Public Radio Station • Auto Planning Radio Set-up • Advanced Polar Radio System

  30. T8D03 Which of the following is normally used when sending automatic location reports via amateur radio? • A connection to the vehicle speedometer • A WWV receiver • A connection to a broadcast FM sub-carrier receiver • A Global Positioning System receiver

  31. T8D06 What does the abbreviation PSK mean? • Pulse Shift Keying • Phase Shift Keying • Packet Short Keying • Phased Slide Keying

  32. T8D07 What is PSK31? • A high-rate data transmission mode • A method of reducing noise interference to FM signals • A method of compressing digital television signal • A low-rate data transmission mode

  33. T8C11 What name is given to an amateur radio station that is used to connect other amateur stations to the Internet? • A gateway • A repeater • A digipeater • A beacon

  34. T8C09 How might you obtain a list of active nodes that use VoIP? • From the FCC Rulebook • From your local emergency coordinator • From a repeater directory • From the local repeater frequency coordinator

  35. T8C10 How do you select a specific IRLP node when using a portable transceiver? • Choose a specific CTCSS tone • Choose the correct DSC tone • Access the repeater autopatch • Use the keypad to transmit the IRLP node ID

  36. T8C08 What is required in place of on-air station identification when sending signals to a radio control model using amateur frequencies? • Voice identification must be transmitted every 10 minutes • Morse code ID must be sent once per hour • A label indicating the licensee's name, call sign and address must be affixed to the transmitter • A flag must be affixed to the transmitter antenna with the station call sign in 1 inch high letters or larger

  37. T8C07 What is the maximum power allowed when transmitting telecommand signals to radio controlled models? • 500 milliwatts • 1 watt • 25 watts • 1500 watts

  38. T8D04 What type of transmission is indicated by the term NTSC? • A Normal Transmission mode in Static Circuit • A special mode for earth satellite uplink • An analog fast scan color TV signal • A frame compression scheme for TV signals

More Related