RES76 – 219 – TABLE 1B1, 2, 3 Limits on aggregate epfd radiated by non-GSO FSS systems in certain frequency bands Frequency band (GHz) epfd (dB(W/m2)) Percentage of time during which epfd may not be exceeded Reference bandwidth (kHz) Reference antenna diameter, and reference radiation pattern4 17.8-18.6 −170 −170 −164 −164 0 90 99.9 100 40 1 m Recommendation ITU-R S.1428 −156 −156 −150 −150 0 90 99.9 100 1 000 −173 −173 −166 −164 −164 0 99.4 99.9 99.92 100 40 2 m Recommendation ITU-R S.1428 −159 −159 −152 −150 −150 0 99.4 99.9 99.92 100 1 000 −180 −180 −172 −164 −164 0 99.8 99.8 99.992 100 40 5 m Recommendation ITU-R S.1428 −166 −166 −158 −150 −150 0 99.8 99.8 99.992 100 1 000 1 For certain GSO FSS receive earth stations, see also Nos. 9.7A and 9.7B. 2 For each reference antenna diameter, the limit consists of the complete curve on a plot which is linear in decibels for the epfd levels and logarithmic for the time percentages, with straight lines joining the data points. 3 A non-GSO system shall meet the limits of this Table in both the 40 kHz and the 1 MHz reference bandwidths. 4 For this Table, reference patterns in Recommendation ITU-R S.1428 shall be used only for the calculation of interference from non-GSO FSS systems into GSO FSS systems.