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- Oct 23, 2025
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Hi All,
We run magnetic surveys using a mag arrow from geometrics. it is a meter long survey device that weights 1.2kg and is suspended beneath the drone on 5m cables. We have used an Alta-X in the past, but are looking to change to a DJI 400 as the hassle of importation and registering a drone over 25kg in some countries is just too much.
the terrain following capabilities of the M400 are very intriguing, typically we fly at 15-20m above ground, so the sensor is 10-15m above the ground.
Is there a minimum level that the terrain following capabilities of the M400 works? and i assume that at low levels the max speed is reduced, not normally an issue as we fly at 5-10m/s (18-36kph)
I can not see anywhere this information, instruction manual, chat rooms etc.
your hep much appreciated.
regards
AD
We run magnetic surveys using a mag arrow from geometrics. it is a meter long survey device that weights 1.2kg and is suspended beneath the drone on 5m cables. We have used an Alta-X in the past, but are looking to change to a DJI 400 as the hassle of importation and registering a drone over 25kg in some countries is just too much.
the terrain following capabilities of the M400 are very intriguing, typically we fly at 15-20m above ground, so the sensor is 10-15m above the ground.
Is there a minimum level that the terrain following capabilities of the M400 works? and i assume that at low levels the max speed is reduced, not normally an issue as we fly at 5-10m/s (18-36kph)
I can not see anywhere this information, instruction manual, chat rooms etc.
your hep much appreciated.
regards
AD
