Under what circumstances, if any, may a General Class amateur operator be the control operator of a station transmitting data emissions on the 20-meter band?
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A
This is not permitted for General Class licensees.
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B
Only if the transmission is for emergency communications.
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C
Only when using a digital mode with a symbol rate of 300 baud or less.
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D
At any time, as long as the station power does not exceed 100 watts PEP.