FPV used in combat these days go a lot further than 4km, you can punch out to 25km+ with a good repeater setup easily, 10-15km with a good mast setup, and strikes using FPV quads out to 45km have been documented (but these are rare).
You just need to plan your battery selection and consider the electronic warfare environment to go the distance.
There’s also the optical fiber drones which come in spool lengths up to 20km…
Gentrification of areas with music venues is a notable factor. It’s like a cycle. Very noticeable in London.
Place is cheap and kind of a shithole so it’s possible to open cool bars and late night music venues. People move there because it’s now a cool place. Prices go up. People complain about the noise from the venues. Venues close and are replaced with sterile overpriced crap. Place is now boring and expensive. See: Shoreditch as a fine example.
I guess that depends where you order from. You can get some crazy machines from Alibaba/Aliexpress and the “documentation” they come with is usually… well it leaves a lot to be desired.
Because the turret thing was probably a drunken shitpost/joke he made to the informant that he thought was his friend much like the “claymore roomba” or “tannerite dog” meme.
I’m still not sure what this guy is meant to have done wrong beyond having a rifle that’s “too short” and blowing up some shit on his own property and I guess having some edgy political ideas.
Funnily, responsible waste management has been an extremely well covered topic in a lot of the DIY science/chemistry forums over the years.
It’s even come up regularly on YouTube channels like NileRed/NileBlue - he has a couple of videos on processing wastes/cleanup work done after a reaction.
Contacts for reliable contract synthesis labs in China are kind of a closely held secret.
Before the 2017 “general ban” on psychoactive substances in the UK there was a thriving industry where “entrepreneurs” with the contacts for such labs would hire chemists to find them a new candidate analogue/derivative of say, a stimulant or hallucinogen or whatever, knock together a synthesis route, see if it works, and then have it manufactured in bulk for resale to head shops.
A small number of people got incredibly rich off this, some got busted when their product got banned and they didn’t dump the stock fast enough, but most made fucking phenomenal amounts of money.
The same “trade” carries on in some other European countries to this day, with “new” LSD derivatives cropping up every few months when one is invariably banned.
I vaguely recall there was even a few articles about this whole thing back in the day by some journalists, maybe at Vice or something? They had an interview with one of the chemists.