Document ID: chunk:federal_register_of_legislation:F2023C00946:body:0:p8
Version: federal_register_of_legislation:F2023C00946
Segment Type: other
Provision Reference: 
Character Range: 20743–23684

subtracting, from the particular centre or emission frequency specified in the licence for the station, half the particular bandwidth specified in the licence for the station.

        upper limit for the station means the frequency obtained by adding, to the particular centre or emission frequency specified in the licence for the station, half the particular bandwidth specified in the licence for the station.

      (4D) If the licence that authorises the station was issued on or after 16 July 2022, the filter is assumed to apply below the lower limit for the station and above the upper limit of the station. In this subsection, lower limit for the station and upper limit for the station have the same meaning as in subsection (4C).

            Note: To meet the assumptions in subsections (4C) and (4D), bandpass or notch filters may be required between different earth receive stations that are operating on different frequencies within the 3600-4200 MHz frequency range and on the same antenna. This is the case irrespective of whether operation of the stations is authorised by the same or different licences. If there are multiple earth receive licences authorising stations that operate on the same antenna in the 3600-4200 MHz frequency range, for interference management purposes, a bandpass filter can be assumed at the lower and upper edges of each group of licences where relevant stations operated under those licences are directly adjacent in frequency.
(5) When assessing interference caused by unwanted emissions or receiver overload:
           * Propagation loss between a radiocommunications transmitter and an earth receive station for a fixed-satellite service should be calculated using Recommendation ITU-R P.452 with p = 20%.
          Note: The parameter p is defined in Recommendation ITU-R P.452 as the required time percentage for which the calculated basic transmission is not exceeded.
           * In the event actual antenna radiation patterns are not available for an earth receive station in a fixed-satellite service, the antenna radiation pattern defined in ITU-R Recommendation S.465 can be assumed.
           * The first time a spectrum licensee performs adjacent channel coordination with an apparatus licensed earth receive station operating in the 3600 to 4200 MHz band, and before the spectrum licensee registers their device, the spectrum licensee must notify the affected earth receive station licensee. This is to ensure the FSS licensee has installed an RF filter with the relevant characteristics from Table 1 or Table 2 (as appropriate) to the front end of their earth station receiver.

      4.4 Additional protection requirements – incumbent FSS Earth receive stations operating in the 3600-3800 MHz band under earth receive licences
      (1) An incumbent earth receive station is one that operates in the 3600–3800 MHz band under an earth receive licence and falls within one of