Originally Posted by
airpolice
Really, 100Km & inexpensive?
Here is a UAV (not a multicopter) developed and sold for both commercial users and amateur builders. Flown to 13,000 feet:
https://www.youtube.com/watch?v=wpuhDhk8WrY
https://www.youtube.com/watch?v=19RDaBTwC6I
Here is an off-the-shelf model capable of 100 km radius: details presented by a world expert (in China) on "drones" of all kinds:
https://www.youtube.com/watch?v=mRAH-E0bczA
And two actual 100 km out and back flights of similar craft (lots of details):
https://www.youtube.com/watch?v=aqMm_gzuRYI&t=33s
https://www.youtube.com/watch?v=NfzBiZUPSo0
These are all examples of people who are essentially hobbyists integrating off-the-shelf equipment. The technology is well established and anybody can build and fly an FPV UAV with IFR gear. It can even be completely automated with on-board software:
https://www.youtube.com/watch?v=0RcwKYpTEWE