Goto Section: 25.135 | 25.137 | Table of Contents
FCC 25.136
Revised as of October 1, 2011
Goto Year:2010 |
2012
§ 25.136 Licensing provisions for user transceivers in the 1.6/2.4 GHz,
1.5/1.6 GHz, and 2 GHz Mobile Satellite Services.
In addition to the technical requirements specified in § 25.213, earth
stations operating in the 1.6/2.4 GHz and 1.5/1.6 GHz Mobile Satellite
Services are subject to the following operating conditions:
(a) User transceiver units associated with the 1.6/2.4 GHz
Mobile-Satellite Service or 2 GHz Mobile-Satellite Service may not be
operated on civil aircraft unless the earth station has a direct
physical connection to the aircraft cabin or cockpit communication
system.
(b) No person without an FCC license for such operation may transmit to
a space station in this service from anywhere in the United States
except to receive service from the holder of a pertinent FCC blanket
license or from another party with the permission of such a blanket
licensee.
(c) The holder of an FCC blanket license for operation of transceivers
for communication via a 1.6/2.4 GHz, 1.5/1.6 GHz, or 2 GHz Mobile
Satellite Service system shall be responsible for operation of any such
transceiver to receive service provided by that licensee or provided by
another party with the blanket licensee's consent. Operators of such
satellite systems shall not transmit communications to or from user
transceivers in the United States unless such communications are
authorized under a service contract with the holder of a pertinent FCC
blanket license for transceiver operation or under a service contract
with another party with authority for such transmission delegated by
such a blanket licensee.
(d) Any mobile earth station (MES) associated with the Mobile Satellite
Service operating in the 1530-1544 MHz and 1626.5-1645.5 MHz bands
shall have the following minimum set of capabilities to ensure
compliance with Footnote S5.353A and the priority and real-time
preemption requirements imposed by Footnote US315.
(1) All MES transmissions shall have a priority assigned to them that
preserves the priority and preemptive access given to maritime distress
and safety communications sharing the band.
(2) Each MES with a requirement to handle maritime distress and safety
data communications shall be capable of either:
(i) Recognizing message and call priority identification when
transmitted from its associated Land Earth Station (LES) or
(ii) Accepting message and call priority identification embedded in the
message or call when transmitted from its associated LES and passing
the identification to shipboard data message processing equipment.
(3) Each MES shall be assigned a unique terminal identification number
that will be transmitted upon any attempt to gain access to a system.
(4) After an MES has gained access to a system, the mobile terminal
shall be under control of a LES and shall obtain all channel
assignments from it.
(5) All MESs that do not continuously monitor a separate signalling
channel or signalling within the communications channel shall monitor
the signalling channel at the end of each transmission.
(6) Each MES shall automatically inhibit its transmissions if it is not
correctly receiving separate signalling channel or signalling within
the communications channel from its associated LES.
(7) Each MES shall automatically inhibit its transmissions on any or
all channels upon receiving a channel-shut-off command on a signalling
or communications channel it is receiving from its associated LES.
(8) Each MES with a requirement to handle maritime distress and safety
communications shall have the capability within the station to
automatically preempt lower precedence traffic.
(e) Any Land Earth Station (LES) associated with the Mobile Satellite
Service operating in the 1530-1544 MHz and 1626.5-1645.5 MHz bands
shall have the following minimum set of capabilities to ensure that the
MSS system complies with Footnote S5.353A and the priority and
real-time preemption requirements imposed by Footnote US315. It should
be noted that the LES operates in the Fixed-Satellite Service ("FSS")
as a feeder-link for the MSS (Radio Regulations 71) and that the
following capabilities are to facilitate the priority and preemption
requirements. The FSS feeder-link stations fulfilling these MSS
requirements shall not have any additional priority with respect to FSS
stations operating with other FSS systems.
(1) All LES transmissions to mobile earth stations (MESs) shall have a
priority assigned to them that preserves the priority and preemptive
access given to maritime distress and safety communications.
(2) The LES shall recognize the priority of calls to and from MES and
make channel assignments taking into account the priority access that
is given to maritime distress and safety communications.
(3) The LES shall be capable of receiving the MES identification number
when transmitted and verifying that it is an authorized user of the
system to prohibit unauthorized access.
(4) The LES shall be capable of transmitting channel assignment
commands to the MESs.
(5) The communications channels used between the LES and the MES shall
have provision for signalling within the voice/data channel, for an
MES, which does not continuously monitor the LES signalling channel
during the time of a call.
(6) The LES shall transmit periodic control signalling signals to MES,
which do not continuously monitor the LES signalling channel.
(7) The LES shall automatically inhibit all transmissions to MESs to
which it is not transmitting a signalling channel or signalling within
the communications channel.
(8) The LES shall be capable of transmitting channel-shut-off commands
to the MESs on signalling or communications channels.
(9) Each LES shall be capable of interrupting, and if necessary,
preempting ongoing routine traffic from an MES in order to complete a
maritime distress, urgency or safety call to that particular MES.
(10) Each LES shall be capable of automatically turning off one or more
of its associated channels in order to complete a maritime distress,
urgency or safety call.
(f) Incorporation of ancillary terrestrial component base station into
an L-band mobile-satellite service system. Any licensee authorized to
construct and launch an L-band mobile-satellite system may construct
ancillary terrestrial component (ATC) base stations as defined in
§ 25.201 at its own risk and subject to the conditions specified in
this subpart any time after commencing construction of the
mobile-satellite service system.
(g) Pre-operational build-out and testing. An MSS licensee may, without
further authority from the Commission and at its own risk engage in
pre-operational build-out and, conduct equipment tests for the purpose
of making such adjustments and measurements as may be necessary to
assure compliance with the terms of the technical provisions of its MSS
license, ATC operation requirements, the rules and regulations in this
Part and the applicable engineering standards. Prior to engaging in
such pre-operational build-out and testing, an MSS licensee must notify
the Commission concerning the initiation of MSS system satellite
construction and the MSS operator's intent to construct and test ATC
facilities. This notification must take the form of a letter formally
filed with the Commission in the appropriate MSS license docket. Such
letter shall specify the frequencies on which the MSS licensee proposes
to engage in pre-operational testing and shall specify the name,
address, telephone number and other such information as may be
necessary to contact a MSS licensee representative for the reporting
and mitigation of any interference that may occur as a result of such
pre-operational testing and build-out. MSS licensees engaging in
pre-operational build-out and testing must also comply with § § 5.83,
5.85(c), 5.111, and 5.117 of this chapter relating to experimental
operations. An MSS licensee may not offer ATC service to the public for
compensation during pre-operational testing. In order to operate any
ATC base stations, such a licensee must meet all the requirements set
forth in § 25.147 and must have been granted ATC authority.
(h) Aircraft. All portable or hand-held transceiver units (including
transceiver units installed in other devices that are themselves
portable or hand-held) having operating capabilities in the
1626.5-1660.5 MHz and 1525-1559 MHz bands shall bear the following
statement in a conspicuous location on the device: "This device may not
be operated while on board aircraft. It must be turned off at all times
while on board aircraft."
[ 65 FR 59142 , Oct. 4, 2000, as amended at 67 FR 46604 , July 16, 2002;
67 FR 51110 , Aug. 7, 2002; 68 FR 43645 , July 24, 2003; 68 FR 47858 ,
Aug. 12, 2003; 69 FR 5710 , Feb. 6, 2004]
Goto Section: 25.135 | 25.137
Goto Year: 2010 |
2012
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