RFI situation in 1280 MHz sub band

ecently, we are seeing increased RFI in the lower part of the default 1280 MHz, i.e, between 1260 and 1275 MHz. If we move 20 MHz upwards, the band is clean. Therefore, for imaging in the 1280 MHz sub-band, please use 1300 MHz as band center instead of 1280 MHz.