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Emergency Antennas, Silent Stations, and Special Temporary Authority (STA)
Technical STA Requests -
contact: Charles N. "Norm" Miller 202-418-2767 charles.miller@fcc.gov
Silent Station STA Requests -
contact: Denise Williams 202-418-2711 denise.williams@fcc.gov
Emergency Antennas
The Commission's rules provide for immediate restoration of operation for broadcast stations when licensed
transmission systems have been damaged and cannot be used. See Section 73.1680, Emergency Antennas.
Some important points about emergency antennas:
Licensees may resume operation with emergency antennas without prior authority from the FCC.
A request for STA to continue use of the emergency antenna must be filed within 24 hours of commencing
operation. This request may be filed electronically via CDBS, and is feeable for commercial licensees.
The emergency antenna must be at or close to the licensed site
(See Site Change Policy, below).
FM and TV licensees "may erect any suitable radiator or use operable sections of the authorized
antenna". AM stations may use a horizontal or vertical wire, or a single element of a licensed directional
array as an emergency antenna.
AM stations licensed for directional operation must reduce power to 25% or less of licensed
directional power when operating nondirectionally on an emergency basis, unless higher power will not
exceed the licensed directional pattern.
Special Temporary Authority
When a broadcast station cannot operate in accordance with its license due to equipment failure,
damage to licensed transmission systems, or other causes, the station may request STA via electronic
or paper filing. Section 73.1635 is the rule governing STA operation; other related rule parts are 73.1680
(emergency antennas); 73.1560 (reduced power); 73.62 (AM directional antennas) 73.1740 (reduced hours).
Some helpful hints about electronic STA filings:
Electronic filing of STA requests is available for all broadcast stations
via the Media Bureau's
CDBS system. On the main e-filing forms page, scroll to the bottom and select the link to "Additional
non-form Filings"
Any STA that involves operation with technical facilities at variance from the license is an
"Engineering STA". The "Legal STA" category is used for main studio waivers, operation with formerly
licensed facilities and other non-technical variances. If in doubt, select the "Engineering STA" form.
It is not necessary to fill in the technical information sections of the STA form when operating
with the licensed antenna system. Most STA requests, such as reduced power operation, fall into
this category.
STA Site Change Policy
STA requests which involve a change in transmitter site must meet these criteria:
Loss of the licensed site must be beyond the licensee's control.
STA facilities must continue to provide service to the licensed community.
STA facilities must maintain, as closely as practicable, the licensed service area without extending it.
STA facilities cannot involve the construction of towers intended for permanent use by
the station requesting the STA.
AM Directional Stations
AM directional antennas are complex, and filing an STA for such an AM directional station can be confusing for attorneys
and licensees without engineering backgrounds. A list follows of the three most common kinds of STA for AM
directional stations, with rule parts and descriptions:
Reduced power. Section 73.1560(d). The licensed antenna system is in operation. All monitor points
are within limits and the antenna monitor readings are as licensed. (Note: if the power is low enough,
the antenna monitor can't be calibrated, but if it can, it should give the right numbers.)
This STA usually means the transmitter has been damaged or some antenna system component will
not operate at full power, but otherwise the antenna system is okay.
Parameters at variance and/or reduced power while maintaining monitor points within licensed
limits. Sections 73.62(b)(4); (c).
The directional antenna system has minor damage, but it is still operating
directionally; possibly something is reradiating the signal.
A reduction in power and/or small adjustments in the operating parameters
are necessary to keep the monitor
points below limits.
Emergency/temporary operation with a nondirectional antenna and reduced power not to exceed 25 percent
of licensed directional power. Sections 73.1680(b)(1); 73.1615(b)(3). Monitor points might exceed licensed
limits, and the antenna monitor will not give the licensed readings. This mode of operation should be
limited to circumstances in which the station cannot operate directionally, such as a tower collapse,
phasing/coupling equipment failure or during construction/repair work which precludes directional operation.
STA Paper Filing Instructions (Commercial Stations)
The following four items are required for paper STA filings:
The letter request, which states the reason for the request and the technical details of the STA operation.
The letter must contain the station callsign and facility ID number on the first or cover page.
Fee payment in the amount of $160.00 (check or credit card).
FCC Form 159, which transmits the fee payment to our fee contractor, US Bank, St. Louis, MO.
The Payment Type Code for an AM or FM STA is "MGR".
It is necessary to have an FCC Registration Number (FRN) in order to complete Form 159.
Form 159 can be downloaded from the FCC website, at
http://www.fcc.gov/Forms/Form159/159.pdf.
A certification pursuant to the Anti-Drug Abuse Act of 1988, signed by an officer of the licensee.
The certification language (See Section 1.2002) may be included within the letter, or it may be a separate
form. The Anti-Drug Abuse Act certification can be downloaded from the Commission's internet site, at
http://www.fcc.gov/mb/audio/antidrug.html.
An original plus one copy of the above materials (do not submit a copy of the check) should be filed
at the following address:
Federal Communications Commission
Media Bureau Services
Box 979089
St. Louis, Missouri 63197-9000
If you are using an overnight courier service (strongly recommended), the materials should be
placed inside the courier's envelope in a separate envelope bearing the above address. The courier
should deliver the package to:
Federal Communications Commission
US Bank, Government Lockbox
1005 Convention Plaza
St. Louis, Missouri 63101
STA Paper Filing Instructions (Noncommercial Educational Stations)
Noncommercial educational stations are not required to pay application filing fees for an STA request.
Noncommercial educational stations seeking an STA should file
The letter request, which states the reason for the request and the technical details of the STA operation.
The letter must contain the station callsign and facility ID number on the first or cover page.
A certification pursuant to the Anti-Drug Abuse Act of 1988, signed by an officer of the licensee.
The certification language (See Section 1.2002) may be included within the letter, or it may be a separate form. The Anti-Drug Abuse Act
certification can be downloaded from the Commission's internet site, at:
http://www.fcc.gov/mb/audio/antidrug.html.
Noncommercial educational STA filings (original and two copies) should not be sent to the above US Bank address,
but to the address listed in
Filing Locations for Paper Documents
and should include a statement on the cover page that a filing fee is not required.
Silent Stations
Pursuant to Section 73.1740 of the Commission's rules, broadcast stations
may remain silent for up to 10 days without Commission authority. If the station
is or will be silent for up to 30 days, the Commission must be notified
(by letter) that the station is silent. If the station will be or has been silent
for more than 30 days, the licensee must request Special Temporary
Authority (STA) to remain silent. However, the Commission can not
grant an STA to remain silent unless the reason for the station's silence
is beyond the control of the licensee. A request for an STA to remain silent
may be either electronically filed or submitted in letter form. The request must
be signed by an officer or director of the licensee. If the request is submitted
in letter form, an anti-drug certification
must be attached and signed by an officer or director of the licensee. There
are no filing fees associated with a request for an STA to remain silent.
Silent STAs, at the staff's discretion, may be granted up to 180 days. If a station
is or will be silent beyond the expiration of its STA, a request to extend the STA
must be submitted at the time of expiration. The requirements for extension
of an STA to remain silent are the same as the for the initial request. However,
a licensee must explain in the extension request what efforts it has made
to return the station to operation during the period of its STA and why
an extension is needed. Stations may remain silent for no more than one year.
The licenses of stations remaining silent for more than one year are
considered by the Commission to have automatically expired as a matter of law
pursuant to Section 312(g) of the Communications Act.