T8D-2010: Non-voice communications; image data, digital modes, CW, packet, PSK31
T8D01:
Which of the following is an example of a digital communications method?
All of these choices are correct
Packet
PSK31
MFSK
T8D02:
What does the term APRS mean?
Automatic Position Reporting System
Associated Public Radio Station
Auto Planning Radio Set-up
Advanced Polar Radio System
T8D03:
Which of the following is normally used when sending automatic location reports via amateur radio?
A Global Positioning System receiver
A connection to the vehicle speedometer
A WWV receiver
A connection to a broadcast FM sub-carrier receiver
T8D04:
What type of transmission is indicated by the term NTSC?
An analog fast scan color TV signal
A Normal Transmission mode in Static Circuit
A special mode for earth satellite uplink
A frame compression scheme for TV signals
T8D05:
Which of the following emission modes may be used by a Technician Class operator between 219 and 220 MHz?
Data
Spread spectrum
SSB voice
Fast-scan television
T8D06:
What does the abbreviation PSK mean?
Phase Shift Keying
Pulse Shift Keying
Packet Short Keying
Phased Slide Keying
T8D07:
What is PSK31?
A low-rate data transmission mode
A high-rate data transmission mode
A method of reducing noise interference to FM signals
A method of compressing digital television signal
T8D08:
Which of the following may be included in packet transmissions?
All of these choices are correct
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
T8D09:
What code is used when sending CW in the amateur bands?
International Morse
Baudot
Hamming
Gray
T8D10:
Which of the following can be used to transmit CW in the amateur bands?
All of these choices are correct
Straight Key
Electronic Keyer
Computer Keyboard
T8D11:
What is a "parity" bit?
An extra code element used to detect errors in received data
A control code required for automatic position reporting
A timing bit used to ensure equal sharing of a frequency
A "triple width" bit used to signal the end of a character
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