I have a few questions about the kestrel 4500 that are driving me nuts. Under the baro screen, I have the ref altitude set to 0. The baro shows up as 25.63 and changes from different times in the day. Now I know that is not correct because my station baro is always at 29.something. Do I need Togo into the baro calibration and set it to what my actual station pressure is at the present time? Another question is if I set altitude to zero on the baro screen will I still be able to get the altitude off of the altitude screen? Or am I missing something here? This is driving me nuts!