Federal Register - August 19, 2021
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Fuente: Federal Register
46672
Federal Register / Vol. 86, No. 158 / Thursday, August 19, 2021 / Proposed Rules
transmitter operates for longer than 0.1
seconds or in cases where the pulse train exceeds 0.1 seconds, the measured field strength shall be determined from the average absolute voltage during a 0.1
second interval during which the field strength is at its maximum value. The exact method of calculating the average field strength shall be submitted with any application for certification or shall be retained in the measurement data file for equipment subject to Suppliers Declaration of Conformity.
4. Section 15.255 is amended by revising the introductory text of paragraphs a, c, and c1, revising paragraph c3, removing paragraph c4, paragraphs e introductory text and e2 and adding paragraph e4 to read as follows:
15.255
GHz.
Operation within the band 5771
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a Operation under the provisions of this section is not permitted for equipment used on satellites.
c Radiated Power Limits. Within the 5771 GHz band, emission levels shall not exceed the following equivalent isotropically radiated power EIRP:
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1 Products other than field disturbance sensors shall comply with one of the following power limits, as measured during the transmit interval:
3 Field disturbance sensors other than those operating under the provisions of paragraph c2 of this section shall comply with the following, as measured during the transmit interval:
i For field disturbance sensors that limit their operation to the 5764 GHz frequency band, the average power shall not exceed 20 dBm and the average power spectral density shall not exceed 13 dBm/MHz. The transmit duty cycle shall not exceed 10% during any 33 ms interval i.e., the device shall not transmit longer than a total of 3.3 ms.
ii For field disturbance sensors operating over the entire 5771 GHz frequency band, the average power shall not exceed 10 dBm.
e Limits on transmitter conducted output power. Except as specified paragraph e1 of this section, the peak transmitter conducted output power shall not exceed 500 mW. Depending on
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the gain of the antenna, it may be necessary to operate the intentional radiator using a lower peak transmitter output power in order to comply with the EIRP limits specified in paragraph c of this section.
2 Field disturbance sensors operating under the provisions of paragraph c3 of this section shall comply with the following:
i For field disturbance sensors that limit their operation to the 5764 GHz frequency band, the peak transmitter conducted output power shall not exceed 10 mW.
ii For field disturbance sensors operating over the entire 5771 GHz frequency band, the peak transmitter conducted output power shall not exceed 0.1 mW.
4 Compliance measurements of frequency-agile field disturbance sensors shall be performed with any related frequency sweep, step, or hop function activated.
FR Doc. 202116637 Filed 81821; 8:45 am BILLING CODE 671201P
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