AERONAUTICAL BROADCASTING SERVICE
Note.— This does not prevent an emergency change of frequency when required in circumstances which do not permit
the promulgation of a NOTAM at least two weeks in advance of the change.
Scheduled broadcasts (other than sequential collective type broadcasts), shall be started at the scheduled time
by the general call. If a broadcast must be delayed, a short notice shall be transmitted at the scheduled time advising
recipients to “stand by” and stating the approximate number of minutes of delay.
After definite advice has been given to stand by for a certain period, the broadcast shall not be started until
the end of the standby period. Where broadcasts are conducted on a time-allotment basis, transmission shall be terminated by each station
promptly at the end of the allotted time period whether or not transmission of all material has been completed. In sequential collective type broadcasts each station shall be ready to commence its broadcasts at the
designated time. If for any reason a station does not commence its broadcast at the designated time, the station immediately
following in sequence shall wait and then commence its broadcast at its own designated time.
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