Today -15 C outside and I did my first distant flight using mobile network for FPV and control. Direct visibility is not required.
Round trip about 3 km and most distant point is about 1 km.

Little demo of my setup.
Real flight with this setup is in previous post. Enjoy :)

For today - another flight this time with screen cast from iPad control panel.

Map is hidden for a purpose :)

4G GSM drone

Instead of building quad controller board from scratch (my attempts to do this are here https://www.youtube.com/watch?v=icYXOJ-ONnc and here http://www.youtube.com/watch?v=vbCuCqe_wsk) the better way is to change a concept a little.

On this quad below I use NAZA M V2 flight controller and 4G receiver that links NAZA to internet.

By this setup I can use all neat features that Naza provide: great stabilization, GPS position hold, return to home etc., and control quad via internet by FPV. 

This add-on 4G receiver board can work with any other flight controller not only with Naza.

What it gives - unlimited range within GSM network coverage and FPV via same GSM link.

On another end - contorl panel on iPad and 4G wifi router.