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NEW General Class Exam Question Pool

effective 7/01/2015 thru 6/30/2019

    Unseen questions
    Weak questions
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2015-G2E: Digital operating: procedures, procedural signals and common abbreviations

2015-G2E01: Which mode is normally used when sending an RTTY signal via AFSK with an SSB transmitter?





2015-G2E02: How can a PACTOR modem or controller be used to determine if the channel is in use by other PACTOR stations?

Put the modem or controller in a mode which allows monitoring communications without a connection

Unplug the data connector temporarily and see if the channel-busy indication is turned off

Transmit UI packets several times and wait to see if there is a response from another PACTOR station

Send the message: "Is this frequency in use?"

2015-G2E03: What symptoms may result from other signals interfering with a PACTOR or WINMOR transmission?

All of these choices are correct

Frequent retries or timeouts

Long pauses in message transmission

Failure to establish a connection between stations

2015-G2E04: What segment of the 20-meter band is most often used for digital transmissions?

14.070 - 14.100 MHz

14.000 - 14.050 MHz

14.150 - 14.225 MHz

14.275 - 14.350 MHz

2015-G2E05: What is the standard sideband used to generate a JT65 or JT9 digital signal when using AFSK in any amateur band?





2015-G2E06: What is the most common frequency shift for RTTY emissions in the amateur HF bands?

170 Hz

85 Hz

425 Hz

850 Hz

2015-G2E07: What segment of the 80-meter band is most commonly used for digital transmissions?

3570 - 3600 kHz

3500 - 3525 kHz

3700 - 3750 kHz

3775 - 3825 kHz

2015-G2E08: In what segment of the 20-meter band are most PSK31 operations commonly found?

Below the RTTY segment, near 14.070 MHz

At the bottom of the slow-scan TV segment, near 14.230 MHz

At the top of the SSB phone segment, near 14.325 MHz

In the middle of the CW segment, near 14.100 MHz

2015-G2E09: How do you join a contact between two stations using the PACTOR protocol?

Joining an existing contact is not possible, PACTOR connections are limited to two stations

Send broadcast packets containing your call sign while in MONITOR mode

Transmit a steady carrier until the PACTOR protocol times out and disconnects

Send a NAK response continuously so that the sending station has to pause

2015-G2E10: Which of the following is a way to establish contact with a digital messaging system gateway station?

Transmit a connect message on the station’s published frequency

Send an email to the system control operator

Send QRL in Morse code

Respond when the station broadcasts its SSID

2015-G2E11: What is indicated on a waterfall display by one or more vertical lines adjacent to a PSK31 signal?


Long Path propagation

Backscatter propagation

Insufficient modulation

2015-G2E12: Which of the following describes a waterfall display?

Frequency is horizontal, signal strength is intensity, time is vertical

Frequency is horizontal, signal strength is vertical, time is intensity

Frequency is vertical, signal strength is intensity, time is horizontal

Frequency is vertical, signal strength is horizontal, time is intensity

2015-G2E13: Which communication system sometimes uses the Internet to transfer messages?





2015-G2E14: What could be wrong if you cannot decode an RTTY or other FSK signal even though it is apparently tuned in properly?

All of these choices are correct

The mark and space frequencies may be reversed

You may have selected the wrong baud rate

You may be listening on the wrong sideband

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2015-G2D: Amateur Auxiliary; minimizing interference; HF operations
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2015-G3A: Sunspots and solar radiation; ionospheric disturbances; propagation forecasting and indices
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