Document ID: chunk:federal_register_of_legislation:F2018L01063:schedule:4:p2
Version: federal_register_of_legislation:F2018L01063
Segment Type: schedule
Provision Reference: sch 4 (pt 2/4)
Character Range: 23203–26563

receive stations are to be protected from unwanted emissions (out-of-band and spurious) to a level of -128.6 dBm/MHz, assuming a receiver noise temperature of 100K which is not to be exceeded for more than 20% of the time.
             Note When assessing interference from unwanted emissions, the highest level of out-of-band or spurious emissions that fall within the licensed bandwidth of the FSS Earth station receiver should be considered in calculations.
           (4) A radiocommunications transmitter operated under a spectrum licence in the 3.4 GHz band is not considered to overload the receiver of an FSS Earth station if the total power received from the interfering service at the input of an FSS Earth station receiver (i.e. after considering Antenna gain, radiofrequency (RF) filtering and other losses) does not exceed -65 dBm. The minimum RF filtering level described in Table 1, at the front end of the Earth receive station for different frequency offsets, should be assumed.

Frequency offset from lower edge of Earth station receiver (MHz)  Rejection (dB)

< 50                                                              0.5 + 0.6*foffset (MHz)

<110                                                              45.5

< 150                                                             30.5 + 0.25*(foffset (MHz)-50)

< 200                                                             55.5

≥ 200                                                             70

         Table 1: Minimum frequency response of earth receive station's RF filter
              Note  When there are multiple earth receive licences operating on the same antenna, the RF filter characteristics described in Table 1 should only be applied from the lower edge of the lowest frequency licence.
           (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 to the front end of their earth station receiver.
           4.4 Additional protection requirements for incumbent Earth receive stations operating in the 3600-3700 MHz band
           (1) An incumbent earth receive station is one that operates in the 3600–3700 MHz band and falls within one of the frequencies and areas contained in the following re-allocation declarations:

              (a) Radiocommunications (Spectrum Re-allocation—3.6 GHz Band