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Unattended Operation of Radio and Television Broadcast
Stations
In 1995, the Commission adopted the Report and Order in MM Docket 94-130,
10 FCC Rcd 11479 (1995) [ PDF | Word ] which permitted radio
and TV broadcast stations to be operated without a person standing by to monitor the
transmitter's operation ("unattended operation"). This action was taken to permit
licensed broadcast stations to take advantage of advances in station monitoring
equipment and the inherent reliability and stability of today's transmission equipment.
However, questions have arisen as to how the relevant rule sections (47 CFR Sections
73.1300,
73.1350,
73.1400,
73.1820,
74.734, and
74.1234)
apply in particular circumstances. The Audio Division, Media Bureau, in
coordination with the Enforcement Bureau,
has prepared this question-and-answer sheet to address these inquiries.
Q1: Notification to Commission: Am I required to notify the
Commission when a broadcast station begins unattended operation of its transmitter?
A: No. Notification is not required when a station begins
unattended operation of its transmitter. See73.1300
Q2: Main Studio: Does the unattended operation rule permit me
to eliminate the main studio for my station?
A: No. The Report and Order had no effect on the main studio
requirements for radio and television broadcast stations. The "unattended operation" refers
to a lack of human monitoring of the transmitter itself, not the entire station. Radio and
TV stations, with the exception of low power television stations and FM and TV translator
and booster stations, and also excepting those stations for whom waiver of the main studio
rules was granted, are still required to comply with the main studio requirements of
47 CFR Section 73.1125. Note, however, that the rules do not require the main studio staff to
monitor an unattended broadcast transmitter.
Q3: Is the station required to have automated equipment in place before unattended
operation may commence?
A: No. At the present time, the Commission does not require
the installation of automatically adjusting monitoring and
control equipment (referred to in the Commission's
rules as an Automatic Transmission System or ATS) before a station employs unattended
operation of its broadcast transmitter. If automatically adjusting monitor and control
equipment is not employed, suitable equipment must be employed
which is expected to operate within assigned tolerances for
extended periods of time without constant human
monitoring. See47 CFR Section 73.1400.
Q4: Dedicated Telephone Line: If I use a telephone line for transmitter control and
notifications or alarms, am I required to employ a dedicated telephone line for that
purpose?
A: Yes. A dedicated telephone line (using the public switched telephone network)
to the transmitter site is one which is used for the sole purpose of interacting with the
broadcast transmitter and monitoring equipment. Pursuant to
47 CFR Section 73.1350, it
may not be used for other purposes during periods when it is in use for transmitter
monitoring, alarms, or control. However, the telephone line may be used for other
purposes during periods when the transmitter is being monitored and controlled by other
means, e.g., by a person at the transmitter site.
Q5: Response Time: How long do I have to respond and correct a
transmitter
malfunction?
A: The personnel designated by the licensee to control the transmitter must have
the capability to turn the transmitter off at all times, or include an alternate method of
taking control of the transmitter which can terminate the station's operation within 3
minutes. See73.1350(b)(2). An example of a system of this
type, independent of automatic equipment, would be equipment to turn the transmitter off
when the studio-to-transmitter (STL) link is turned off by personnel at the studio. This
short response time is intended to cover those rare instances where the malfunctioning
equipment may be posing a threat to public safety, e.g., by causing interference
to a land mobile based emergency radio system.
In general, the licensee or permittee must correct any malfunction which could cause
interference or turn the transmitter off within 3 hours of
the malfunction. Some malfunctions, however, must be corrected within
3 minutes. Examples of situations requiring termination
within 3 minutes are operations posing a threat to life or property, or that is likely
to significantly disrupt operations of other stations (such as spurious emissions or
operations substantially at variance from the authorized radiation pattern), unless the power
is sufficiently reduced in that period to eliminate any excess radiation. See Sections
73.62 for AM stations and Section 73.1350 for AM, FM, and TV stations, as revised in the
Report and Order in MB Docket 03-151, FCC 07-97, released May 25, 2007
[ PDF ].
Q6: Location of Transmitter Control Personnel: Are the persons
designated by the licensee to control the transmitter required to be at a fixed
site?
A: The answer depends on the level of automation employed by
the station, as follows:
Fully Automated -- The station's control and monitoring equipment makes
any adjustments necessary without human supervision. In the event of a malfunction
which could cause interference, if the automated system cannot correct the malfunction, the
equipment automatically shuts the transmitter off after 3 hours (or three minutes for
certain AM station conditions, see the previous question). The system may be configured
to contact designated personnel within these time limits, but operator control is not
necessary to deal with the malfunction. In this case,
personnel to control the transmitter are not required to be
at a fixed site.See47 CFR Section 73.1400(b).
The station must maintain the means of receiving, retransmitting, and logging EAS alerts
and tests. See 47 CFR Part 11 and Question 10 below.
Partially Automated or Not Automated -- If the transmission, monitoring, or
control facilities are
Supervised on an ongoing basis by a designated person,
whether by direct supervision or by remote control from another site, or
Are configured to contact a person designated by the
licensee in the event of a malfunction, who must then take steps to resolve the
malfunction or terminate operations,
the station is considered "attended" by
47 CFR Section 73.1400(a).a person who can take control of the
transmitter must be located at a fixed site. Equipment used for remote
control operation must provide sufficient monitoring and control capability so as to
ensure compliance with
47 CFR Section 73.1350. The station must also have the means of
receiving, retransmitting, and logging EAS alerts and tests. See 47 CFR Part 11 and
Question 10 below.
Please note that these requirements do not preclude the monitor-and-control equipment
from being configured to contact a second person initially. If the second party is
unavailable or cannot take control, the equipment must then contact the designated person
at the fixed site, and control or cessation of operations must occur, within the time periods
specified in
47 CFR Section 73.1350.
(See Question 5 above).
Q7: How do the unattended operation rules apply to my FM translator or
booster station or my low power TV station or TV translator
or booster station?
A: Unattended operation for low power TV stations and TV
translator and booster stations is covered by
47 CFR Section 74.734, while unattended operation for FM
translator and booster stations is covered by
47 CFR Section 74.1234. These rule sections require the following:
If the transmitter cannot be promptly reached at all
hours and in all seasons, means must be provided so that the transmitter can be turned on
and off at will from a point that is accessible 24 hours per day;
The equipment shall automatically and immediately
terminate transmitting if the input signal is lost;
Notification to the FCC shall be provided as to the
name, address, and telephone number of the person or persons in control of the
transmitter. The notification should be sent to the pertinent location shown in Question 8.
Q8: Transmission System Control Point: How and When do I notify
the Commission of
the establishment of a Transmission System Control Point
location?
A: The location of a transmission system control point, or
remote control point, other than at the transmitter site or at the main studio, must be
sent by letter to the following Media Bureau locations:
Audio Division (1800B) (Radio Stations)
Video Division (1800E) (Television)
at the FCC, Washington, DC 20554 within
3 days of the initial use of that point. Please include the station's call sign and
Facility ID number
with any notification of the transmission system control point address and provide the
telephone number at that control point. Post Office (P.O.) boxes are not acceptable
addresses. The rule does not preclude the establishment of multiple transmission system
control sites, or set a limit on the location of these sites. Notification is not required if
personnel can be contacted at the main studio site or transmitter site during all hours of
operation. See47 CFR Section 73.1350(h) (formerly subsection (g)). For clarity, we ask that when
notification is made of a new transmission system control point, the letter contain a list of
all the remote control points currently in use: this will make clear whether a previously
notified control point remains valid.
Q9: Monitoring Procedures: What technical monitoring procedures
must be in place for a station employing unattended operation?
A: A station, attended or unattended, must establish suitable monitoring
procedures of its equipment and maintainance schedules for the station and indicating
instruments to ensure that the equipment is operating properly. See47 CFR Section 73.1350(c). The FCC does not prescribe any particular
procedure or schedule interval for a station to use. Operating and Maintenance Logs
for Broadcast and Broadcast Auxiliary Stations, BC Docket 82-537, 54 RR 2d 805
(1983). We suggest that any procedures established be reduced to writing to provide
proof that monitoring procedures exist. Please note that indicating instruments must
comply with the requirements of
47 CFR Section 73.1215.
Licensees and permittees should be aware that the Chief
Operator of the station, whether attended or unattended, is responsible for
weekly inspections of log entries and the additional information required by
47 CFR Section 73.1870(c).
Q10: Station Log: Should out-of-tolerance conditions and corrective actions to the
transmitting equipment be recorded in the station log?
A: Yes. The station should take care to record each failure, out-of-tolerance
condition, or corrective action (including calibration of automatic devices) made to
the transmission system equipment, including monitoring and control devices.
See47 CFR Section 73.1820(a) and (a)(1).
Sections
73.1800 and
73.1820 state that the entries in the station log should be made by the
person designated by the licensee to take charge of the transmitting equipment. Automatic
equipment may be used to record entries for the station, provided
that the requirements of
47 CFR Section 73.1820(b) are met by the recording device.
Station logs must be kept at least 2 years. See47 CFR Section 73.1840 for additional information regarding retention of station logs.
EAS activations, and EAS equipment taken out of service for
repairs, must be
logged each time. See47 CFR Sections 11.35 and
11.53(b)(14). . FM
and TV translator and booster stations are not required to comply with the EAS
requirements of Part 11. For more information concerning EAS, please see the Internet
pages at http://www.fcc.gov/eb/eas/.
Log entries must be made of any malfunction or
extinguishment of tower lighting, or any notification made to
the FAA of the same, and a log
entry should be made when normal functioning resumes. See
47 CFR Sections
17.48,
17.49, and
73.1820 (or
47 CFR Section 74.734 for low power TV stations and TV translator and
booster stations, or
47 CFR Section 74.1234 for FM translator and booster stations). Visual
observations to verify proper operation of the tower lighting must be made once a day,
unless an automatic alarm system is installed to notify the station of any malfunction
(see47 CFR Section 17.47).
While daily observations are no longer required to be logged, we strongly suggest that the
station do so.
For FM, TV, and most AM stations, changes to and readings of
metering equipment are not required to be logged.
However, AM directional stations
without an approved sampling system must log the meter data
called for in
47 CFR Section 73.1820(b)(2) every three hours.
Operating and Maintenance Logs for Broadcast and Broadcast Auxiliary Stations, BC
Docket 82-537, 54 RR 2d 805 (1983).
This information sheet should answer most questions dealing with unattended
operation of broadcast stations. In the event that a particular question is not adequately
answered by this information sheet, or poses an apparent conflict with the rule section,
please refer to the specific rule section(s) for guidance.
Additional information about radio broadcast stations may be
obtained from the Audio Division at (202)-418-2700, or by viewing the Audio
Division's Internet Web pages at
http://www.fcc.gov/mb/audio/.
Additional information about television broadcast stations may be
obtained from the Video Division at (202)-418-1600, or by viewing the Video
Division's Internet Web pages at
http://www.fcc.gov/mb/video/.