Just compared GHG and KDB hydrophones.
The GHG got three SensorData controllers with different SensoHeight and MaxRange settings. Sorted by their Index number, they are as follows:
SensorData #1
MaxRange: 15000
MinSensorHeight: -500
MaxSensorHeight: 0
SensorData #2
MaxRange: 100000
MinSensorHeight: -500
MaxSensorHeight: -28
SensorData #3
MaxRange: 22000
MinSensorHeight: -28
MaxSensorHeight: -10
As for the KDB hydrophone, it got only two controllers, whose settings are:
SensorData #1
MaxRange: 22000
MinSensorHeight: -20
MaxSensorHeight: -1
SensorData #2
MaxRange: 100000
MinSensorHeight: -500
MaxSensorHeight: -20
My suspect is that, as far as human audibility is concerned, only one of the SensorData controllers is applied, the highest index having priority over the lower ones.
It would explain why the GHG is not mute along its whole range (first controller set to 0-500 m), whereas KDB contacts are only audible above 20 m of depth (first controller set to 1-20 m).
