These are getting really common in UK and cost is getting lower... Most transmission is spread spectrum 2.4-2.5G and most downlinks are 5.8G the uplinks typically have a 1Km range (line of sight ) and the down links are 3Km or better.=20 If they are responsible owners they will probably have a DJI NAZA or simila= r on board this has GPS position control and waypoints also return to home in event of bad reception.=20 Typical payload is something like a go-pro camera / recorder but could be significantly more advanced ..... I reckon that the fishing line would be a reasonably good deterrent.... the= y wont want to crash it many times... Steve -----Original Message----- From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of RussellMc Sent: 26 August 2014 05:32 To: Microcontroller discussion list - Public. Subject: Re: [OT] WIFI SIGNAL SOURCE LOCATOR Here (NZ) use for 'spying' could probably get people in trouble. Many admins, use outside line of sight range is illegal. Local police may be interested in combination of range and spying aspects. Or not. - 12 gauge. See who comes for the remains. - Drone wars - tag or better. Best of all is if you can attach a tracker. Tracker on a ribbon makes interception easier. Loops or hooks on ribbon. Be sure not to intercept his prope with the ribbon - nasty things could happen. If this is regular, which way does it leave - assuming you can see it do so= .. As soon as it comes igmore it and drive travel towards source. When it returns add data point and repeat. If they do this often enough it will wor= k regardless of evasions but may take far too long. Monofilament ... R On 26 August 2014 16:10, Josh Koffman wrote: > On Mon, Aug 25, 2014 at 6:04 PM, BOB wrote: > > We do not know the legality of this project but there is some one=20 > > spying on us with a toy QUADCOPTER. It transmits the picture by WIFI. > > Is there some way to detect when a wifi signal comes into range and=20 > > possibly get a directional fix on it. > > > > With these things becoming more and more prevalent it would be a=20 > > nice product make to mess them up. > > What sort of environment is this in? I can't imagine the range on this=20 > would be that far, could you find the source of the control? > > If the unit is expensive enough, it will have a "return to home" > option that is automatically triggered by losing the control signal. > Maybe if the signal were to get interrupted, you could follow it as it=20 > flew back home. > > It also might be worth talking to someone familiar with trespassing=20 > laws. IANAL so I have no idea how they apply to airspace, but there=20 > must be something in regards to this. > > Josh > -- > A common mistake that people make when trying to design something=20 > completely foolproof is to underestimate the ingenuity of complete=20 > fools. > -Douglas Adams > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive=20 > View/change your membership options at=20 > http://mailman.mit.edu/mailman/listinfo/piclist > -- http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/chang= e your membership options at http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .