systems (e.g. GSO satellites or multiple-satellite systems) a systematic adjustment of the levels in Recommendation ITUR RA.769 may be warranted. Accordingly, when the levels contained in Table 8 are applied or referred to, account should be taken of the assumptions used to derive them. TABLE 8 Threshold levels of pfd of interference detrimental to the radio astronomy service* Continuum observations Spectral lines observations Assumed spectral Radio astronomy Assumed pfd pfd line channel band(1) bandwidth (dB(W/m2)) (dB(W/m2)) bandwidth (MHz) (MHz) (kHz) 13.36-13.41 0.05 (2) (2) –201 25.55-25.67 0.120 (2) (2) –199 73.0-74.6 1.6 (2) (2) –196 150.05-153.0 2.95 (2) (2) –194 322.0-328.6 6.6 10 –189 –204 406.1-410.0 3.9 (2) (2) –189 608-614 6 (2) (2) –185 1 400-1 427 27 20 –180 –196 1 610.6-1 613.8 (3) (3) 20 –194 1 660-1 670 10 20 –181 –194 2 690-2 700 10 (2) (2) –177 4 990-5 000 10 (2) (2) –171 (GHz) 10.6-10.7 100 (2) (2) –160 15.35-15.4 50 (2) (2) –156 22.21-22.5 (3) (3) 250 –162 23.6-24.0 400 250 –147 –161 31.3-31.8 500 (2) (2) –141 42.5-43.5 1 000 500 –137 –153 86-92 6 000 1 000 –125 –144 105-116 11 000 1 000 –121 –141 164-168 4 000 (2) (2) –120 182-185 (3) (3) 1 500 –136 217-231 14 000 2 500 –114 –133 265-275 10 000 2 500 –113 –131
systems (e.g. GSO satellites or multiple-satellite systems) a systematic adjustment of the levels in Recommendation ITUR RA.769 may be warranted. Accordingly, when the levels contained in Table 8 are applied or referred to, account should be taken of the assumptions used to derive them. TABLE 8 Threshold levels of pfd of interference detrimental to the radio astronomy service* Continuum observations Spectral lines observations Radio astronomy band(1) (MHz) pfd (dB(W/m2)) Assumed bandwidth (MHz) pfd (dB(W/m2)) Assumed spectral line channel bandwidth (kHz) 13.36-13.41 –201 0.05 (2) (2) 25.55-25.67 –199 0.120 (2) (2) 73.0-74.6 –196 1.6 (2) (2) 150.05-153.0 –194 2.95 (2) (2) 322.0-328.6 –189 6.6 –204 10 406.1-410.0 –189 3.9 (2) (2) 608-614 –185 6 (2) (2) 1 400-1 427 –180 27 –196 20 1 610.6-1 613.8 (3) (3) –194 20 1 660-1 670 –181 10 –194 20 2 690-2 700 –177 10 (2) (2) 4 990-5 000 –171 10 (2) (2) (GHz) 10.6-10.7 –160 100 (2) (2) 15.35-15.4 –156 50 (2) (2) 22.21-22.5 (3) (3) –162 250 23.6-24.0 –147 400 –161 250 31.3-31.8 –141 500 (2) (2) 42.5-43.5 –137 1 000 –153 500 86-92 –125 6 000 –144 1 000 105-116 –121 11 000 –141 1 000 164-168 –120 4 000 (2) (2) 182-185 (3) (3) –136 1 500 217-231 –114 14 000 –133 2 500 265-275 –113 10 000 –131 2 500
R-REC-SM.329-11-201101-S!!MSW-E.docx