kovat53
Captain
Flight distance : 324521 ft
Hungary
Offline
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for now it is obvious from the reactions of walking folks, it would be very fine to have quieter props.
I took a calibrated sound pressure level (SPL) meter from my sound studio (type is Phonic PAA3) and measured the sound level of my MA. Mesuring method was the usual weight A. The distance between MA and SPL meter was about 1.5 meter, MA was hovering at about 1.5 meter high. I measured it in my living room. The base SPL level was 30.6 dB in this measuring range (30 - 99 db). The result 74-77 dB which is not even a low value. I.e. the SPL level (in the same room, same distance)) of the tv at a normal power was 48-53 dB SPL. So MA is - so said - very loud.
I don't think DJI would issue low noise props for MA, it is considered a finished product. We have to decide to live with or without MA. I personally can live with it. For me much much more disturbing problem the strange behavior of the RC, what behavior probably comes with the interferences of WIFI, and changes for example the functions of the camera tilt button (sometimes moves left/right the aircraft and not the gimbal, believe me, I have tried many-many times)). Turning left/right or yawing I learned, after take off I move the sticks a bit and after it MA/RC mostly works fine together. It is the same for the camera tilt button. If left/right moving comes, I let MA hovering and move the right stick left/right. After couple of stick movement RC operates well again. I am not even happy, mainly it never happened before .400 and .500 firmware updates. Some of us have this yaw/turning problem some of us don't. I don't think it would be hardware issue, I think it comes from the circumstances where I fly. For example today I flew near a huge bridge made of ferro-concrete, I can realize the RC/MA communication was disturbed by the mass of a bridge. At a very open territory I have never realized the above described behavior.
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