SUBELEMENT T6 – Communications modes and methods – 3 exam questions - 3 groups
T6A Modulation modes, descriptions and bandwidth (AM, FM, SSB).
What are phone transmissions?
Which of the following is a form of amplitude modulation?
What name is given to an amateur radio station that is used to connect other amateur stations to the Internet?
Which type of voice modulation is most often used for long distance and weak signal contacts on the VHF and UHF bands?
Which type of modulation is most commonly used for VHF and UHF voice repeaters?
Which emission type has the narrowest bandwidth?
Which sideband is normally used for VHF and UHF SSB communications?
What is the primary advantage of single sideband over FM for voice transmissions?
What is the approximate bandwidth of a single-sideband voice signal?
What is the approximate bandwidth of a frequency-modulated voice signal?
What is the normal bandwidth required for a conventional fast-scan TV transmission using combined video and audio on the 70-centimeter band?
T6B Voice communications, EchoLink and IRLP.
How is information transmitted between stations using Echolink?
What does the abbreviation IRLP mean?
Who may operate on the Echolink system?
What technology do Echolink and IRLP have in common?
What method is used to transfer data by IRLP?
What does the term IRLP describe?
Which one of the following allows computer-to-radio linking for voice transmission?
What are you listening to if you hear a brief tone and then a station from Russia calling CQ on a 2-meter repeater?
Where might you find a list of active nodes using VoIP?
When using a portable transceiver how do you select a specific IRLP node?
T6C Non-voice communications – image communications, data, CW, packet, PSK31, Morse code techniques, Q-signals.
Which of the following is an example of a digital communications method?
What does the term APRS mean?
What item is required along with your normal radio for sending automatic location reports?
What type of transmission is indicated by the term NTSC?
What emission mode may be used by a Technician class operator in the 219 - 220 MHz frequency range?
What does the abbreviation PSK mean?
What is PSK31?
What sending speed is recommended when using Morse code?
What is a practical reason for being able to copy CW when using repeaters?
What is the "Q" signal used to indicate that you are receiving interference from other stations?
What is the "Q" signal used to indicate that you are changing frequency?