This also happens in a mostly level flight sometimes. Locks drop very easily and when you switch to pulse stt from pd stt the antenna recenters, causing a loss of lock. Any thoughts?
Also, if it is the MLC shouldnt the ground clutter also appear on the DDD? Because it doesn't with it turned on. If it was ground clutter it should all appear at the same distance from the aircraft in a straight line, not randomly at different spots.