this post was submitted on 16 Feb 2025
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Portable drone jammer uses a Raspberry Pi tactical Software Defined Radio (www.tomshardware.com)
submitted 5 days ago by [email protected] to c/technology
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[–] [email protected] 9 points 5 days ago (2 children)

I bet some of 'em live in the 2.4 GHz range to use unregulated spectrum.

https://d-fendsolutions.com/blog/issues-with-jamming-drone-frequencies/

Commercial drones operate on four frequency bands: 2.4GHz, 5.8GHz, 433MHz and 915MHz.

You probably have something like a 2000 watt 2.4 GHz cavity magnetron transmitter. It's just normally got shielding around it -- your microwave oven.

Dunno if they hit a wide enough spectrum to blot out drones, though.

kagis

https://www.uavjammer123.com/introduction-to-drone-frequency-bands/

  1. 2.4 GHz ISM Band

Frequency Range: 2.400 – 2.4835 GHz

Usage: This band is widely used for remote control and data transmission, including consumer drones.

https://www.sfu.ca/phys/346/121/resources/physics_of_microwave_ovens.pdf

The magnetrons in domestic microwave ovens emit microwaves at 2.45 GHz (repeatable, each time the magnetron is switched on, to ±10 MHz) with bandwidths of only a few MHz [6]

So, looks like not, if the frequency range is ~83 MHz wide and the magnetron in use only has bandwidth of a few MHz.

[–] [email protected] 9 points 5 days ago (2 children)

There is no such thing as unregulated spectrum. Even though you can use some equipment without a license, it's still regulated. You will get in a lot of trouble if you are caught using a jammer.

[–] shalafi 8 points 5 days ago (1 children)

If you're in a situation where you have to you a jammer, you're already in a lot of trouble. This is not a device for kids to fart around with at home.

[–] [email protected] 7 points 5 days ago

And ultimately if you are trying to macgyver together anti drone tech you are beyond fucked and should have spent that energy pursuing other means of privacy.

[–] [email protected] 0 points 4 days ago (1 children)

Lol sure is. Stop assuming everyone is americano.

[–] [email protected] 3 points 4 days ago

Nah pretty much any country should have regulations about things like max power allowed, deliberate interference etc. anywhere on the spectrum. Just because the law says "these bands are for everyone to play around with" doesn't mean that you can just EMP the whole thing.

[–] [email protected] 3 points 4 days ago

They are also frequency-hopping, meaning they constantly switch what part of the band they use, and there are a few rc radio protocols use a dual frequency system for redundancy. FRsky has one that does 2.4Ghz and 900Mhz at the same time.

So to make sure you are jamming all (commercial) drones, you need to deafen everything from ~850Mhz up to 5.9Ghz.