Why would this happen?!

[Navid200]

The user claims he used "Add Calibration" to enter the calibration.
But, why would the transmitter make a correction in the opposite direction?

[Navid200]

@joshbohmer

[tzachi-dar]

One reason that this would happen in the old g4 days is this:
Calibration was based on the last 6 measurements. When you enter a calibration you would also remove a calibration.
Now let's assume that the last calibration was pulling things down. Now, you enter a calibration that moves things down (but less than the last one), so, the overall effect is a move up.
Now, this was something that happened in the G4 days, and algorithms have changed. Still, I think that if one calibration pushes the other calibration back (for example some time decade) it can cause this effect.