Reply To: SP145 wrong amplitude reading and IF overload Forums › SP Series Discussions › SP145 wrong amplitude reading and IF overload › Reply To: SP145 wrong amplitude reading and IF overload AndrewModerator Andrew April 7, 2025 at 3:07 pm A reference level of -20dBm on the SP145 achieves the minimum noise floor, but will limit input signals to ~-20dBm before IF overload occurs. On the BB60D, the minimum noise floor is achieved at -30dBm reference level.
