Hi, I have just bought a used AIR2S. During setup there is an option to enable ADSB, i am familiar with ADSB and the advantages as seeing other aircraft in the vicinity etc. Are there any negatives from a drone operators perspective as it’s optional, thanks
Two questions:-
a) Do you want other people to be aware of your drone’s postion in flight? Sounds like a safety bonus to me, but there may be issues that I’m not aware of.
b) Do you specifically not want other people to be aware of your drone’s position in flight? Not suggesting that you are up to something nefarious, it could be a matter of privacy and ‘no-one else’s business’.
The drone doesn’t transmit ADS-B, it receives it 
DJI AirSense is an alert system
I have turned mine off as so many aircraft don’t have it
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I have mine on, it warned me last week of an approaching aircraft - it turned out to be a military A400M at about 500ft - I was grateful for the warning, although not all military aircraft have them enabled…
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I believe as SparkyFPV confirmed it’s a receive system, my question was based on does it affect the preformance in any way, something else to use battery life. I also wondered when using one of my other drones a Mini3 Pro it switches off WiFi and BT to maximise control, just wondered if there was anything similar.
Thanks for the confirmation, as I replies to TheJohnster my questions were really preformance impact. I flew in a B150 Pup a couple of weeks ago, that had a receiver but wasn’t working !
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That sounded a useful warning ! I was walking at the head of Llyn Ogwen in Snowdonia last week when a pair of F15’s screamed overhead I don’t think they were much over a 100 ft.
Only two things really use significant power on the drone.
The motors (obviously) account for the vast majority, then the control/video link a relatively very low 2nd.
After those, other things - GPS, ADBS, sensors, even recording video (some people have posted that they turn that off to save battery 
) … use an absolute negligible amount of power.
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Yeah…electronic pseudo-scientists!!! …bought one of the best consumer video drones in the world but I don’t use video or take photos as it eats fuel🙄
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To be fair - I think that’s only been when they are on critical battery in RTH. But it still only makes perhaps 1 second difference in a 1 minute RTH.
If they are going to fly to critical, then not setting the RTH height above what’s needed will make far more difference than turning off recording … both time and power being saved by not climbing unnecessary height.
While I know not all planes transmit ADSB I have never seen the warning pop up on my Avata and that does have this system on it.
I also fly not that far from East Mids Airport so plenty of planes around - very odd - not that its an issue but it would be nice to know of them low flying aircrafts.
Can’t see point we fly at 400 ft they fly 500 ft and if see an aircraft below that you either to close to an airport or in a military air zone
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Thanks, I always set the RTH to suit the location.
I’ve switched it on, with the exception of millitary the only things anywhere near that height will be smaller aircraft at the vicinity of an airfield. Normal circuit height is around 800 - 1000 ft as advised by ATC. The only times they will be at 400ft would be on finals, which we wouldn’t be any where near. If they were at 400 ft anywhere else they would be in more trouble than we could be.
Not necessarily…Have you ever seen the height the National Grid Helicopters can descend to on inspections works.
At least they don’t tend to be fast.
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In my reply to Albion Drones who was notified of an Atlas at 500ft. I was walking by lake Ogwen in Snowdonia when a pair of US F15’s screamed overhead probably not even at a 100ft. There are no restrictions at this location and even if they were transmitting the range at their altitude would be minimal. I’m pointing out that there will always be exceptions.
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NR do heli-surveys along railway lines as well, looking for track problems and overhead electric problems, at a sub-400’ level. These things have to be kept an eye out for, but are fortunately noisy, which gives us a fighting chance. The other thing that comes to mind is water-bombers for heath fires, but, again, you wouldn’t be flying a drone in the fire area or downwind of it, or from the charred area upwind. It’s mostly helicopters, but some of the planes are big, and come in low. They fly low when they are scooping water from reservoirs as well.
Liks Mulder says, watch the skies! (TTBOMK, alien spacecraft do not bother much with CAA rules).