More drone stuff

Asian Times:

In fact the Pentagon is now investing in a prototype anti-drone “killer” system, and meanwhile other governments – notably Israel – are supporting companies that offer anti-drone systems.
The big bundle of questions is: Which of these, if any, work and, equally importantly, provide broad enough coverage – and are considered cost-effective and thus affordable and deployable?

Cost is a key issue because drones are proliferating far faster than are any countermeasures while available countermeasures are vastly more expensive than drones – which can be bought for $100 or even less.Drone threats
There are essentially three general types of drone threats. The first threat type comes from commercial drones, mainly Chinese units that can be easily modified by adding explosives as the payload. China has more than 80% of the commercial drone market (one Chinese company, DJI, has 70% of the global market in drones) and these drones are being snapped up by military agencies around the world, including the US Defense Department (which supposedly is prohibited from buying drones from China, but gets ‘waivers’ and buys them anyway). Every Middle Eastern bazaar (even toy store) is selling Chinese-made drones; it is likely the same is true in other parts of the world.
The second type of drone is a home built, with supplies coming from China and elsewhere. Home built drones with internal combustion engines can be larger than the Chinese electric commercial drones and can fly farther. Motors for these drones are bought in Europe and China, and most of the electronics come from China.

The engine, fuel tank and fuel lines of a captured ISIS-made drone. Photo: TASS

 I have RC plane looks just like this except it is electric. Made it from Dollar Tree foam and mail order electronics from China.