RES739 – 388 – TABLE 1-1 pfd thresholds for unwanted emissions from any geostationary space station at a radio astronomy station Space service Space service frequency band Radio astronomy frequency band Single dish, continuum observations Single dish, spectral line observations VLBI Condition of application: the API is received by the Bureau following the entry into force of the Final Acts of: pfd(1) Reference bandwidth pfd(1) Reference bandwidth pfd(1) Reference bandwidth (MHz) (MHz) (dB(W/m2)) (MHz) (dB(W/m2)) (kHz) (dB(W/m2)) (kHz) MSS (space-to-Earth) 387-390 322-328.6 −189 6.6 −204 10 −177 10 WRC-07 BSS MSS (space-to-Earth) 1 452-1 492 1 525-1 559 1 400-1 427 −180 27 −196 20 −166 20 WRC-03 MSS (space-to-Earth) MSS (space-to-Earth) 1 525-1 559 1 613.8-1 626.5 1 610.6-1 613.8 NA NA −194 20 −166 20 WRC-03 RNSS (space-to-Earth) 1 559-1 610 1 610.6-1 613.8 NA NA −194 20 −166 20 WRC-07 BSS FSS (space-to-Earth) 2 655-2 670 2 690-2 700 −177 10 NA NA −161 20 WRC-03 FSS (space-to-Earth) 2 670-2 690 2 690-2 700 (in Regions 1 and 3) −177 10 NA NA −161 20 WRC-03 (GHz) (GHz) − − − − − − BSS 21.4-22.0 22.21-22.5 −146 290 −162 250 −128 250 WRC-03 for VLBI, and WRC-07 for other types of observation NA: Not applicable, measurements of this type are not made in this frequency band. (1) Integrated over the reference bandwidth with an integration time of 2 000 s.