I tried looking for how they're attacking ELRS (control link), and I'm seeing nothing.
There's Joachim's LoRa library. However ELRS uses the 2.4GHz and its a blend of LoRa and FHSS. Basically you need a BladeRF or better to attack the control link properly.
And given the RPi platform, they're likely using RPITX as the SDR transmitter. Lucky to get 1MHz bandwidth... And you need 80MHz minimum.
And the RPi doesn't have the horsepower to properly do 20 or more LoRa channels, with 112MHz mode on Blade.
Until I see a BoM, code, or demonstration, I'm going to consider this to be hogwash.
It looks more like someone built a fun cyberdeck-style build with some neat hardware, and have a use case in mind... but until I see any code or evidence it does what it says, I'd be a little doubtful.
Anyone who cares about signal integrity is using dual-band, so you'd also need to cover the 915MHz/868MHz band. It might be possible that there's some kind of hideous vulnerability in ELRS, but there's a pretty high-stakes jamming contest going on right now.
Apparently they're using some kind of broad spectrum systems in Ukraine that modulate across a wide range of frequencies at the same time, making it hard to jam them.
No way in hell anyone using drones for military purposes is even using non-modified ELRS, at the very least the hopping sequence is sourced from a CSPRNG and there's packet authentication.
Unfortunately the probable countermeasure to things like this pushing more autonomy to the drone so expect a lot less human in the loop control where jamming is a problem i.e active conflict zones.
I'm slightly upset reading this as my first bootstrapped startup was prototyping VERY similar devices....in 2017-2019, until I ran out of money. If I had the resources to make it to production I would have been VERY well positioned to capture sales early on after Russia's 2022 invasion when everyone was experimenting like crazy in the EW space and government funding of COTS equipment was readily available.
I know a guy (Australia) who does this regularly. If a drone flys over his back yard he activates his jammer and the thing makes a controlled vertical descent to his lawn.
100% of the time its neighbourhood kids trying out their toy, and they need to come beg for it back. Then he has the chat about privacy etc etc.
Very illegal here in Australia. I believe even possession is illegal. Technically even our SDRs need to be below some power threshold, though most probably don't conform.
12 V power supply … sdr that jams ELRS like they don’t even know what ELRS is or how it works. An SDR that could jam that wide of a frequency all at once would be very, very expensive.
Also you can just buy a purpose made 300 W jammer on AliExpress
Readit News
There's Joachim's LoRa library. However ELRS uses the 2.4GHz and its a blend of LoRa and FHSS. Basically you need a BladeRF or better to attack the control link properly.
And given the RPi platform, they're likely using RPITX as the SDR transmitter. Lucky to get 1MHz bandwidth... And you need 80MHz minimum.
And the RPi doesn't have the horsepower to properly do 20 or more LoRa channels, with 112MHz mode on Blade.
Until I see a BoM, code, or demonstration, I'm going to consider this to be hogwash.
[0] https://www.nccgroup.com/us/research-blog/technical-advisory...
[1] https://github.com/sensei-hacker/PrivacyLRS
sigh
Now might be the time to do it though, maybe everyone at the fcc will be fired before your caught.
100% of the time its neighbourhood kids trying out their toy, and they need to come beg for it back. Then he has the chat about privacy etc etc.
The jammer itself came from Alibaba I think.
But the legal way to do that is by closing your blinds.
Also you can just buy a purpose made 300 W jammer on AliExpress