GBT Observing Alerts

Expected RFI from RISAT at 5.35 +/- 0.225 GHz

The Indian Space Organization will launch a C-band (5.35 GHz) synthetic aperture radar RISAT in early April. The maximum bandwidth is 225 MHz, orbital altitude is 608 km, average power 200 W from 288 modules of power 10 W each. The spot size on earth will be quite variable.