I saw it... and anybody can build it for about $300. No big whup. In fact, most of the parts are available on Ebay. The receivers in a Phantom don't have any ability to resist being swamped by a large analog noise signal. Easiest way would be to buy a 5 band GSM/CDMA/GPS/WIFI jammer from China (available all over the net) and a 1 watt broadband amp ($50 Ebay). Then build three helical antennas (like the UK jammer) from dowels and wire (Lowes)...and I'll bet a Phantom would stop working - if hit from a range of within about 2 miles. I'd give the links, but that would make it too easy! Dam!