G2E: Digital operating: procedures, procedural signals and common abbreviations
G2E01:
Which mode should be selected when using a SSB transmitter with an Audio Frequency Shift Keying (AFSK) RTTY signal?
LSB
USB
DSB
CW
G2E02:
How many data bits are sent in a single PSK31 character?
The number varies
5
7
8
G2E03:
What part of a data packet contains the routing and handling information?
Header
Directory
Preamble
Footer
G2E04:
Which of the following 20 meter band segments is most often used for most data transmissions?
14.070 - 14.100 MHz
14.000 - 14.050 MHz
14.150 - 14.225 MHz
14.275 - 14.350 MHz
G2E05:
Which of the following describes Baudot RTTY?
5-bit code, with additional start and stop bits
7-bit code, with start, stop and parity bits
Utilizes error detection and correction
Two major operating modes are SELCAL and LISTEN
G2E06:
What is the most common frequency shift for RTTY emissions in the amateur HF bands?
170 Hz
85 Hz
425 Hz
850 Hz
G2E07:
What does the abbreviation "RTTY" stand for?
Radio-Teletype
"Returning To You", meaning "your turn to transmit"
A general call to all digital stations
Repeater Transmission Type
G2E08:
What segment of the 80 meter band is most commonly used for data transmissions?
3570 - 3600 kHz
3500 - 3525 kHz
3700 - 3750 kHz
3775 - 3825 kHz
G2E09:
Where are PSK signals generally found on the 20 meter band?
Around 14.070 MHz
In the low end of the phone band
In the high end of the phone band
In the weak signal portion of the band
G2E10:
What is a major advantage of MFSK16 compared to other digital modes?
It offers good performance in weak signal environment without error correction
It is much higher speed than RTTY
It is much narrower bandwidth than most digital modes
It has built-in error correction
G2E11:
What does the abbreviation "MFSK" stand for?
Multi (or Multiple) Frequency Shift Keying
Manual Frequency Shift Keying
Manual Frequency Sideband Keying
Multi (or Multiple) Frequency Sideband Keying
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Color key:
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● = Unseen
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● = Weak
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● = Review
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● = Learned
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● = Incorrect answer
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