[Code of Federal Regulations]

[Title 47, Volume 5]

[Revised as of October 1, 2006]

From the U.S. Government Printing Office via GPO Access

[CITE: 47CFR80.74]



[Page 29]

 

                       TITLE 47--TELECOMMUNICATION

 

        CHAPTER I--FEDERAL COMMUNICATIONS COMMISSION (CONTINUED)

 

PART 80_STATIONS IN THE MARITIME SERVICES--Table of Contents

 

             Subpart C_Operating Requirements and Procedures

 

Sec.  80.74  Public coast station facilities for a telephony busy signal.



    A ``busy'' signal, when used by a public coast station in accordance 

with the provisions of Sec.  80.111(d), must consist of the transmission 

of a single audio frequency regularly interrupted, as follows:

    (a) Audio frequency: Not less than 100 nor more than 1100 Hertz, 

provided the frequency used for this purpose will not cause auto alarms 

or selective-ringing devices to be operated.

    (b) Rate of interruption: 60 times per minute 10%.

    (c) Duration of each interruption: 0.5 second 10%.