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Portable drone jammer uses a Raspberry Pi tactical Software Defined Radio
- mystraline 2y agoI 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.
- 05 2y agoNo 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.
- jdietrich 2y agoAnyone 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.
- therein 2y agoI do wonder if it is using something like this [0], but then there is always PrivacyLRS[1]. [0] https://www.nccgroup.com/us/research-blog/technical-advisory-expresslrs-vulnerabilities-allow-for-hijack-of-control-link/ https://www.nccgroup.com/us/research-blog/technical-advisory... [1] https://github.com/sensei-hacker/PrivacyLRS https://github.com/sensei-hacker/PrivacyLRS
- geerlingguy 2y agoIt 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.
- mint2 2y agoWouldn’t intentional interference be very illegal to do at random? Sure, hard to get caught but isn’t it illegal?
- thatguy0900 2y agoJamming is very illegal in the US at least. https://www.fcc.gov/general/jammer-enforcement https://www.fcc.gov/general/jammer-enforcement Now might be the time to do it though, maybe everyone at the fcc will be fired before your caught.
- smitelli 2y agoIf you’ve got bored hams around, they’ll catch you.
- reaperman 2y agoI doubt the FCC will be disbanded in a way that prevents any enforcement of anti-jamming rules. But the only thing local hamsters would do is report you to the FCC, so if it were dissolved as GP posits, it wouldn't matter which hams find you.
- Etheryte 2y agoDrones are used in active warfare as we speak, legality in civil use is pretty irrelevant in that context.
- mint2 2y agoSo you’re clarifying that for 0.1% of HN the legality is not an issue as if those in war zones were wondering?
- internet101010 2y agoI feel like I should have the right to block someone trying to use a drone to look inside of my windows.
- jimmySixDOF 2y agoUnfortunately 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.
- 05 2y agoFiber optics is already a non-ML solution to jamming (and RF based detection).
- beeflet 2y agoHow does that work? fiber optics are delicate. you mean free-space optics?
- mmcwilliams 2y agoVery long spools are connected to the drone and it is flown by wire until it strikes its target.
- idunnoman1222 2y ago12 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
- CapricornNoble 2y agoI'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. sigh
- LorenzoGood 2y agoSo a mute jammer from siege.