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b. All emissions outside the band 5150-5350 MHz shall not exceed -27 dBm/MHz e.i.r.p. and any
emissions within the band 5150-5250 MHz shall meet the power spectral density limits of
Section 6.2.1
of RSS-247. The device shall be labelled "for indoor use only."
ii) For devices with operating frequencies in the band 5250-5350 MHz but having a channel bandwidth
that overlaps the band 5150-5250 MHz, the devices' unwanted emission shall not exceed
-27 dBm/MHz e.i.r.p. outside the band 5150-5350 MHz and its power shall comply with the spectral
power density for operation within the band 5150-5250 MHz. The device shall be labelled "for indoor
use only."
3) Additional requirements
In addition to the above requirements, devices operating in the band 5250-5350 MHz with a maximum
e.i.r.p. greater than 200 mW shall comply with the following e.i.r.p. at different elevations, where θ is the
angle above the local horizontal plane (of the Earth) as shown below:
1. -13 dBW/MHz for 0° ≤ θ < 8°
2. -13 − 0.716 (θ-8) dBW/MHz for 8° ≤ θ < 40°
3. -35.9 − 1.22 (θ-40) dBW/MHz for 40° ≤ θ ≤ 45°
4. -42 dBW/MHz for θ > 45°
The measurement procedure defined in
the e.i.r.p. at different elevations.
Users should also be advised that high-power radars are allocated as primary users (i.e. priority users)
of the bands 5250-5350 MHz and 5650-5850 MHz and that these radars could cause interference
and/or damage to LE-LAN devices.
Digital Transmission Systems (DTSs)
DTSs include systems that employ digital modulation techniques resulting in spectral characteristics
similar to direct sequence systems. The following applies to the bands 902-928 MHz and 2400-2483.5
MHz.
(1) The minimum 6 dB bandwidth shall be 500 kHz.
(2) The transmitter power spectral density conducted from the transmitter to the antenna shall not be
greater than 8 dBm in any 3 kHz band during any time interval of continuous transmission. This power
spectral density shall be determined in accordance with the provisions of Section 5.4(4), (i.e. the power
spectral density shall be determined using the same method as is used to determine the conducted
output power).
For DTSs employing digital modulation techniques operating in the bands 902-928 MHz and
2400-2483.5 MHz, the maximum peak conducted output power shall not exceed 1W. Except as
provided in Section 5.4(5), the e.i.r.p. shall not exceed 4 W.
As an alternative to a peak power measurement, compliance can be based on a measurement of the
maximum conducted output power. The maximum conducted output power is the total transmit power
delivered to all antennas and antenna elements, averaged across all symbols in the signalling alphabet
when the transmitter is operating at its maximum power control level. Power must be summed across
all antennas and antenna elements. The average must not include any time intervals during which the
transmitter is off or transmitting at a reduced power level. If multiple modes of operation are
Annex A
of RSS-247 shall be used to verify the compliance to
V
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