My statement is 100 percent true. The last few times I have been in Charlotte I have tried to tune in to 1370 during daytime hours and they were clearly off the air.
Part 73 is pretty clear on the minimum hours of operation...
§ 73.1740 Minimum operating schedule.
(a) All commercial broadcast stations are required to operate not less than the following minimum hours:
(1)AM and FM stations. Two-thirds of the total hours they are authorized to operate between 6 a.m. and 6 p.m. local time and two-thirds of the total hours they are authorized to operate between 6 p.m. and midnight, local time, each day of the week except Sunday.
(i) Class D stations which have been authorized nighttime operations need comply only with the minimum requirements for operation between 6 a.m. and 6 p.m., local time.
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