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14 Protection requirements – fixed-satellite service earth receive stations under area-wide receive licences in 3750 MHz to 4000 MHz

(1) If subsection (2) applies to an earth receive station, a 3.4 GHz transmitter (the relevant transmitter) operated under a 3.4 GHz spectrum licence is to protect the station for a fixed-satellite service from receiver overload. (2) This subsection applies to an earth receive station if: (a) the station is operated under an area-wide receive licence; and (b) the station was included in the Register before the relevant transmitter was included in the Register; and (c) the station is located within 100 kilometres of the relevant transmitter. (3) A 3.4 GHz transmitter is not considered to overload an earth receive station if the total power received from the transmitter at the input of the station does not exceed -65 dBm. (4) For the purposes of subsection (3), the total power received from the transmitter is assessed after considering antenna gain, radiofrequency filtering and other losses. (5) For the purposes of subsection (3), for the operation of a 3.4 GHz transmitter, the minimum radiofrequency filtering level described in Table 3 should be assumed. Table 3

(6) In subsection (5):

lower limit of a licence means, in relation to the geographic area specified in an area-wide receive licence that authorises the operation of an earth receive station, the lowest frequency specified in the licence for the operation of radiocommunications receivers in that geographic area.

upper limit of a licence means, in relation to the geographic area specified in an area-wide receive licence that authorises the operation of an earth receive station, the highest frequency specified in the licence for the operation of radiocommunications receivers in that geographic area.

(7) When assessing interference caused by receiver overload: (a) propagation loss between a 3.4 GHz transmitter and an earth receive station should be calculated using ITU-R Recommendation P.452, with p = 20%; (b) if actual antenna radiation patterns are not available for a fixed-satellite service earth receive station, assume the antenna radiation pattern defined in ITU-R Recommendation S.465.

Note 1: For paragraph (a), the parameter p is defined in ITU-R Recommendation P.452 as the required time percentage for which the calculated basic transmission loss is not exceeded.

Note 2: ITU-R Recommendations P.452 and S.465 are available, free of charge, from the International Telecommunication Union’s website at www.itu.int.

(8) For coordination occurring before 16 July 2027, the first time a 3.4 GHz licensee performs adjacent channel coordination for a radiocommunications transmitter with an earth receive station in the 3750 MHz to 4200 MHz frequency band, before the transmitter is included in the Register, the 3.4 GHz licensee is to notify the area-wide receive licensee. This is to ensure that the area-wide receive licensee has the opportunity to install a radiofrequency filter with the relevant characteristics in subsection (5) to the front end of the earth receive station.