单选题The range of a SSB transmission is MOST affected by（）.Aatmospheric noise and radiated powerBthe frequency band selected and time of day or nightCinterference and position of the moonDradiated power and nearness to shore
单选题
The range of a SSB transmission is MOST affected by（）.
A
atmospheric noise and radiated power
B
the frequency band selected and time of day or night
C
interference and position of the moon
D
radiated power and nearness to shore
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