Rain Echo Attenuation Compensation Technique (REACT)
The radar's antenna gain is, pretty much, the focus of the beam which determines how strong it will be. The gain is calibrated to produce standard display levels. Rainfall reflects the beam and can totally attenuate the radar energy. The Honeywell Primus 880 uses a Rain Echo Attenuation Compensation Technique (REACT) that can overcome this limitation. But you have to understand when to use it and what it is telling you when you do.
You shouldn't mess with REACT until you have a firm grasp on:
You shouldn't mess with REACT until you have a firm grasp on: