Tables A4-10 and A4-11 present the results for the IM protection distances required. It is assumed that the IM source signals are not co-channel with the desired signal, but operating within the of the LNB. TABLE A4-10 Intermodulation protection distances for FSS stations, without RF filtering IM protection zone Earth station system (LNA Input Threshold = dBm) –55.7 Off-Axis Angle, Antenna Required distance to degrees gain, dBi mitigate, km* Macro cell suburban 5 14.5 8.5 10 7.0 6.4 20 4.3 –0.5 30 2.6 –4.9 Macro cell urban 5 14.5 8.0 10 7.0 5.8 20 4.3 –0.5 30 2.6 –4.9 Small cell urban 5 14.5 0.6 10 7.0 0.2 20 0.1 –0.5 30 0.1 –4.9 * For distances less than 1 km, free-space propagation loss was used. TABLE A4-11 Intermodulation protection distances for FSS stations, with RF filtering IM protection zone earth station system (LNA Input (1.4 dB RF filter attenuation) Threshold = dBm) –55.7 Antenna Required distance to mitigate, Off-Axis degrees gain, dBi km* Macro cell suburban 5 14.5 8.4
Tables A4-10 and A4-11 present the results for the IM protection distances required. It is assumed that the IM source signals are not co-channel with the desired signal, but operating within the of the LNB. TABLE A4-10 Intermodulation protection distances for FSS stations, without RF filtering Earth station system IM protection zone (LNA Input Threshold = –55.7 dBm) Off-Axis Angle, degrees Antenna gain, dBi Required distance to mitigate, km* Macro cell suburban 5 14.5 8.5 10 7.0 6.4 20 –0.5 4.3 30 –4.9 2.6 Macro cell urban 5 14.5 8.0 10 7.0 5.8 20 –0.5 4.3 30 –4.9 2.6 Small cell urban 5 14.5 0.6 10 7.0 0.2 20 –0.5 0.1 30 –4.9 0.1 * For distances less than 1 km, free-space propagation loss was used. TABLE A4-11 Intermodulation protection distances for FSS stations, with RF filtering earth station system (1.4 dB RF filter attenuation) IM protection zone (LNA Input Threshold = –55.7 dBm) Off-Axis degrees Antenna gain, dBi Required distance to mitigate, km* Macro cell suburban 5 14.5 8.4
R-REP-S.2368-2015-MSW-E.docx