Hi There that is a very good question, i would say detection from radio signal is definitely possible as drones receive and produce signals to communicate with their controllers.Picking up these signals would be a way of identifying the presence of a drone unless the drone was somehow set to auto-pilot and had its radio output signals disabled.There are other ways that a drone could also be detected such as video, sound, thermal, or radio detection. Each of these methods has its weaknesses and alone isn’t a reliable indicator. Like radar video feed has the limitations of mistaking drones for birds, even with a program designed to detect flight patterns.Some birds can glide long distances on the wind which would appear the same as a drones flight path would. Thermal detection would have limited effect also as recreational drones to have a lot of heat output./would-...Hope this helps :)Music Ire 98Lethargickatharsis MusicMusic I LoveSweetest SongsThe Sweetest ThingsBest SongsThing PlaylistThing YoutubeThing BonoForwardSweetest Thing video is directed by Kevin Godley, features Bono taking his wife Ali on a carriage ride along Fitzwilliam Place, and on to Lower and Upper Fitzwilliam Street in Dublin, enlisting various performers along the way in an effort to apologize to her.

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Bricstar focus on rc drone to global market, products cover toys /practice field and hobby field whick price  range from 10USD-1500USD.. RC Robot is one of our competitive line.. High speed car, some of other newest function products will be update in year of 2016.3. What's certification Bricstar got?. For Eropean market: CE, ROSH,EMC,R&TTE,etc.. For America Market: ASTM, FCC, HR4040.4. What `s our advantage ? . Update new products every day; . Products cover toys/practice/hobby drone; . Products quality testing before showing to you..100% inspection, 2-3% supplies ,on-line , finished inspection.. Experienced of Rosh standard producing & KC test5. What about Quality Control?. We have a perfect QC system to sure the quality.. Samples quality test to sure the products recommend by Bricstar are good .. Mass order quality control request supplies inspection, On-line inspection, finish inspection.  Every batch of goods take photo/video and inspection report for record.  Bricstar discover problem and settle for our Client.