Goto Section: 15.256 | 15.301 | Table of Contents
FCC 15.257
Revised as of October 2, 2015
Goto Year:2014 |
2016
§ 15.257 Operation within the band 92-95 GHz.
(a) Operation of devices under the provisions of this section is limited to
indoor use;
(1) Devices operating under the provisions of this section, by the nature of
their design, must be capable of operation only indoors. The necessity to
operate with a fixed indoor infrastructure, e.g., a transmitter that must be
connected to the AC power lines, may be considered sufficient to demonstrate
this.
(2) The use of outdoor mounted antennas, e.g., antennas mounted on the
outside of a building or on a telephone pole, or any other outdoors
infrastructure is prohibited.
(3) The emissions from equipment operated under this section shall not be
intentionally directed outside of the building in which the equipment is
located, such as through a window or a doorway.
(4) Devices operating under the provisions of this section shall bear the
following or similar statement in a conspicuous location on the device or in
the instruction manual supplied with the device: “This equipment may only be
operated indoors. Operation outdoors is in violation of 47 U.S.C. 301 and
could subject the operator to serious legal penalties.”
(b) Operation under the provisions of this section is not permitted on
aircraft or satellites.
(c) Within the 92-95 GHz bands, the emission levels shall not exceed the
following:
(1) The average power density of any emission, measured during the transmit
interval, shall not exceed 9 uW/sq. cm, as measured at 3 meters from the
radiating structure, and the peak power density of any emission shall not
exceed 18 uW/sq. cm, as measured 3 meters from the radiating structure.
(2) Peak power density shall be measured with an RF detector that has a
detection bandwidth that encompasses the band being used and has a video
bandwidth of at least 10 MHz, or uses an equivalent measurement method.
(3) The average emission limits shall be calculated based on the measured
peak levels, over the actual time period during which transmission occurs.
(d) Limits on spurious emissions:
(1) The power density of any emissions outside the band being used shall
consist solely of spurious emissions.
(2) Radiated emissions below 40 GHz shall not exceed the general limits in
§ 15.209.
(3) Between 40 GHz and 200 GHz, the level of these emissions shall not
exceed 90 pW/cm2 at a distance of 3 meters.
(4) The levels of the spurious emissions shall not exceed the level of the
fundamental emission.
(e) The total peak transmitter output power shall not exceed 500 mW.
(f) Fundamental emissions must be contained within the frequency bands
specified in this section during all conditions of operation. Equipment is
presumed to operate over the temperature range −20 to + 50 degrees Celsius
with an input voltage variation of 85% to 115% of rated input voltage,
unless justification is presented to demonstrate otherwise.
(g) Regardless of the maximum EIRP and maximum power density levels
permitted under this section, devices operating under the provisions of this
section are subject to the radiofrequency radiation exposure requirements
specified in 47 CFR 1.1307(b), 2.1091, and 2.1093, as appropriate.
Applications for equipment authorization of devices operating under this
section must contain a statement confirming compliance with these
requirements for both fundamental emissions and unwanted emissions.
Technical information showing the basis for this statement must be submitted
to the Commission upon request.
(h) Any transmitter that has received the necessary FCC equipment
authorization under the rules of this chapter may be mounted in a group
installation for simultaneous operation with one or more other
transmitter(s) that have received the necessary FCC equipment authorization,
without any additional equipment authorization. However, no transmitter
operating under the provisions of this section may be equipped with external
phase-locking inputs that permit beam-forming arrays to be realized.
[ 69 FR 3265 , Jan. 23, 2004]
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Subpart D—Unlicensed Personal Communications Service Devices
Source: 58 FR 59180 , Nov. 8, 1993, unless otherwise noted.
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Goto Section: 15.256 | 15.301
Goto Year: 2014 |
2016
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