Commercial drones use very narrow and well published bands + powers for their control signals and TV, so you could just noise jam that. You can look it all up from FCC I think. Downside is you will probably knock out WiFi in the neighborhood which makes people angry.
Look up the frequency ranges for standard drone control radio systems, and then build a set of transmitters and directional antennas for those frequency ranges. Fancy mode: add random noise generators to the transmitters.
If you want it portable, then you need to deal with a power supply, either battery or a backpack generator.
>Downside is you will probably knock out WiFi in the neighborhood which makes people angry.
Meh, directional antennas are pretty good at directing RF energy. If you don't make a yagi, then frick you, and also you'll need a hell of a lot more power output so your jammer won't be very effective.
been axing that myself after being "drone raped"
Show me on the doll where the bad drone penetrated you with its throbbing member.
Because birdshot won't do much when the drone is up to 400ft AGL and likely further away laterally. The pattern would spread out enough to miss a Phantom or Mavic, and even if you get a lucky pellet or two to hit the craft, it won't do more than scratch it, assuming you're not within standard bird hunting distance of it.
The FAA considers everything flying in their airspace to be sacred. In their eyes, you shooting down a drone is no different to you shooting down a 747
>In their eyes, you shooting down a drone is no different to you shooting down a 747
That's how the law is written, but it's not how the government selectively enforces. I've read several articles over the years where some moronic redneck was convinced that his neighbor was spying on his trailer park landwhale of a wife, and shot down (generally literally, as in with a rifle) the drone. So far every case has had the cops laughing at the drone owner for thinking that they'd bother helping him out. This one even made it to court where the judge said "frick you, drone pervert" even though the drone guy proved he wasn't trying to ogle anyone's breasts (but the neighbors said "sure he was!" and the judge said "I believe them, not the actual video and flight recorder data.").
Apparently police are the only ones who should be allowed to own drones because civilians will just use them for seeing neighbor breasts or firebombing protesters, not like the trained professionals.
The FAA has been going after drone shooters more often. That guy in Kentucky would have been toast if the drone owner approached the FAA and requested their assistance.
The key part of the ruling is that it was flying over someone else's land. Legally speaking, you own not just the land but about 50 feet of air above it.
Not true. The FAA is the agency solely responsible for managing navigable airspace within the United States, and has designated all class G airspace below 400ft above ground level as open to drones. There is no ownership of airspace up to a certain altitude by private individuals, or local or state organizations. There are regulations regarding overflight and harassment of nonparticipants, but those are based around behavior of the pilot rather than altitudes or property boundaries. Private, local, state, and federal entities can prohibit bringing drones onto their property, but they can't prohibit overflight.
It's really a matter of distance. If the drone is being controlled from a satellite a thousand miles away then jamming is fairly easy. If the drone has a controller maybe half a mile away then it gets more complicated. Signal intensity drops off with range and jamming needs to be more powerful than the signal.
This setup overwhelm drone radio with noise on their control channels. But that only stops the drone, it can still transmit video feed. So you also need another transmitter which would make video feed reception impossible. You can also jam or spoof GPS signal to force it to crash or land >what would it take to assemble a 80% drone jammer
Directional antenna, beeg battery and powerful radio transmitter tuned for required frequency.
first step would probably be acquire your own drone and control box.
I'm assuming DJI etc all use certain freqs but each drone/controller has secret code maybe encrypted with receiver in its drone. But I guess just jam those freqs since your jammer will be lot closer that controller.
But regardless I'd say first step would be buy a drone and 2nd step would be join you local HAM club and some guy will have equip to determine what needs to be jammed and know how to make a jammer (for amusement purposes only of course, many HAM types are very uptight about laws)
The signals are usually very low wattage and spread spectrum, hopping all over. You would be looking at clutter trying to get a picture of what's near and not far. A waterfall freq analyzer might tell you something is near by, but to decypher the pattern of hops is a well guarded secret.
No such thing afaik. 2nd Amendment doesn't cover electronic broadcasting equipment, including jammers. That's a whole different area of law, going back all the way to the Communications Act of 1934, with various FCC regs and state laws thrown on top for good measure.
While yes you'd be violating FCC law as says,
That shit doesn't matter because
A) you'll never make the stuff you need
B) the complexity of design and knowledge needed to make such jammers is enough to allow the system to scramble itself from Radio Direction Finding operators.
A drone jammer requires a bit more than just hardware.
You also need to learn and do programming to control the hardware, as jammer systems are so illegal you will not find -any- knowledge for reference.
I will not go into details, but,
To jam (any signal) effectively requires at a minimum the following:
Multiple points of recieve/transmit.
This means, at the easiest for the "home hobbyist",
At least 3 and preferably 5 minimum sets of both a quality SDR,
Computer of at least the mid-high range of a 2015 generation (GPU not needed though I'm sure it could be made to process better as most GPGPU does),
Remote controllable transceiver (remote meaning the computer that processes your SDR's input automatically commands the transmitter radio),
Antennas sized well enough for broadband transmit and recieve, as well as automatic radio-electrical tuning control (read about HAM antennas and balanced inputs if you need some basic reference knowledge)
Custom software on those computers capable of both linking all the data together real time and rapidly searching for, modulating your transmitters, and powerful enough to counter-phase the enemy transmissions in a given range you define while designing the entire system,
and
The power infrastructure for each SDR+Computer+Transceiver pack to operate for an acceptable amount of time based on absolute maximum iness and egress successfully.
(2/2)
Lets say you want to auto-track and jam across a 500 yard area for 4 hours to ingress and egress successfully. Your 5-point system will require at least 120AH of battery per pack to constantly recieve, process, and transmit to maintain the radio output power necessary to counter-phase in real time with minimum delay time to disrupt the OPFOR.
This shit would be expensive, time consuming, and require a high level of programming+radio function knowledge to make work.
There's a reason why the USA mil's 5-man jammer gear costs nearly a quarter million USD each.
It is specialized knowledge on unpublished tech/operation requiring the fusion of three different areas of radio operation, needing a beefy reliable computer and considerably bulky battery supply.
This, get a few microwave oven magnetrons that spew in the 2.4 Ghz range and probably make the wave guide right(math).
The exposed wires from the drone controller for antenna, and motor BLD controller power wires would pickup and resonate/heat the thing up over a few seconds.
I would not advocate using such a thing in the domestic arena.
As much as you would like to shut up the thumper car next to you and blow their transistors up.
Grandma's pacemaker across the street might quit or auto defib her. A friend of mine playing with wifi antennas and amplifiers learned the hard way as his pacemaker started to quit.
Same for police drones. Sure, you can make a IR laser in the hundreds of watt range and melt the drone. It's not visible to the eye, but can damage you. Other cameras will see the IR beam and will be easy to locate once spotted.
There was a guy in Portland who faced 15 years and 250K fine for just shining a pointer at incoming jets to PDX.
But on the battlefield, that's another story.
Most of the DJI drones operate in the 2.4 ghz and 5 ghz bands shared with ovens and cell phone towers. If you want to jam the band, make a triangle wave generator, and amplify it. Using an old 900 mhz RF output module from a VCR would be a good start and let the harmonics do the job.
In the video, you can see the ease of construction at your own risk. It's a lion battery , a lamp, a switch, a stiff stun gun, and wired to three oven magnetron/tubes. And a cone for a waveguide. For educational purposes.
You do not need all that to jam a single drone.
You overwhelm with microwaves and rf static on the same bandwidths.
Your statement is to make it seem impossible and thus your a neigh sayer trying harm us
Lasers past 5 mW power would take them out and they are readily available. A minor problem is for the backyard builder would be the stabilization rig, but those aren't that hard to fabricate.
This goober disabled the camera in a short amount of time and I can guarantee the cameras used in police activities are even more sensitive to lasers.
Quadcopter drone cameras, nevertheless all cameras, are incredibly sensitive to lasers at the very least. Predator drones are too high in altitude for a handheld laser to accurately stabilize and point, but quad-copters are still in very much in danger of getting brought down by the hobbyist.
https://www.youtube.com/c/styropyro
This channel is almost a step-by-step guide with pictures to easily make a laser that could bring down a police quadcopter.
I said >are you stupid or fedposting
because all mil-spec drones will have infrared with visible light filters, making any conv8enent and affordable (up to $500 range) lasers ineffective.
So again I ask,
Are you fedposting, or just stupid?
Laser safety goggles are generally only effective for one wavelength, the more wavelengths you block the darker the goggles will be.
I said >are you stupid or fedposting
because all mil-spec drones will have infrared with visible light filters, making any conv8enent and affordable (up to $500 range) lasers ineffective.
So again I ask,
Are you fedposting, or just stupid?
A filter that filters out all visible and infrared light is a lens cap.
At a certain level of wattage, you won't be worrying about the camera being blinded permanently. The metal and plastic bits will be molten. That's not conducive for propellers to work or the frame of whatever is on fire.
The FAA considers everything flying in their airspace to be sacred. In their eyes, you shooting down a drone is no different to you shooting down a 747
While yes you'd be violating FCC law as says,
That shit doesn't matter because
A) you'll never make the stuff you need
B) the complexity of design and knowledge needed to make such jammers is enough to allow the system to scramble itself from Radio Direction Finding operators.
A drone jammer requires a bit more than just hardware.
You also need to learn and do programming to control the hardware, as jammer systems are so illegal you will not find -any- knowledge for reference.
I will not go into details, but,
To jam (any signal) effectively requires at a minimum the following:
Multiple points of recieve/transmit.
This means, at the easiest for the "home hobbyist",
At least 3 and preferably 5 minimum sets of both a quality SDR,
Computer of at least the mid-high range of a 2015 generation (GPU not needed though I'm sure it could be made to process better as most GPGPU does),
Remote controllable transceiver (remote meaning the computer that processes your SDR's input automatically commands the transmitter radio),
Antennas sized well enough for broadband transmit and recieve, as well as automatic radio-electrical tuning control (read about HAM antennas and balanced inputs if you need some basic reference knowledge)
Custom software on those computers capable of both linking all the data together real time and rapidly searching for, modulating your transmitters, and powerful enough to counter-phase the enemy transmissions in a given range you define while designing the entire system,
and
The power infrastructure for each SDR+Computer+Transceiver pack to operate for an acceptable amount of time based on absolute maximum iness and egress successfully.
(2/2)
Lets say you want to auto-track and jam across a 500 yard area for 4 hours to ingress and egress successfully. Your 5-point system will require at least 120AH of battery per pack to constantly recieve, process, and transmit to maintain the radio output power necessary to counter-phase in real time with minimum delay time to disrupt the OPFOR.
This shit would be expensive, time consuming, and require a high level of programming+radio function knowledge to make work.
There's a reason why the USA mil's 5-man jammer gear costs nearly a quarter million USD each.
It is specialized knowledge on unpublished tech/operation requiring the fusion of three different areas of radio operation, needing a beefy reliable computer and considerably bulky battery supply.
Good luck!
doing some research right now on drone warfare and this is really helpful. Anti drone tech is only going to get better. Would imagine that for stuff this technical though, most terry/nonstate orgs are just going to be funded and sourced by benefactors rather than building drone jammers in their basement.
>In their eyes, you shooting down a drone is no different to you shooting down a 747
That's how the law is written, but it's not how the government selectively enforces. I've read several articles over the years where some moronic redneck was convinced that his neighbor was spying on his trailer park landwhale of a wife, and shot down (generally literally, as in with a rifle) the drone. So far every case has had the cops laughing at the drone owner for thinking that they'd bother helping him out. This one even made it to court where the judge said "frick you, drone pervert" even though the drone guy proved he wasn't trying to ogle anyone's breasts (but the neighbors said "sure he was!" and the judge said "I believe them, not the actual video and flight recorder data.").
Apparently police are the only ones who should be allowed to own drones because civilians will just use them for seeing neighbor breasts or firebombing protesters, not like the trained professionals.
The key part of the ruling is that it was flying over someone else's land. Legally speaking, you own not just the land but about 50 feet of air above it.
I do. Nothing more american than waking up at 5am hungover, walking naked to your bacm porch with the dirty birdy and letting loose a 30 round salvo while letting piss hit the dirt in front of you. Thats america in one action baby, that's what peak performance looks like.
Long range drones don't use microwave frequency, but for most drones your neighbor can buy yes it'd probably work.
That's assuming the antenna/link orientation and data integrity are just right/just mucked enough.
But modern (commercial and military) probably not. They have 4x4 MIMO phase array antennas for beam forming. If you're not next to the controller, you'd need very powerful jammer to do anything.
After reading several of these threads, I'm convinced the best/easiest way to deal with a drone is to shoot it down with conventional arms rather than trying to radio-jam it.
like any other jamming. There's a signal being used to transmit data to the drone. A jammer would be a more powerful signal on the same or similar frequency/modulation to disrupt or completely overtake the real signal.
the knowledge larping in such threads is astonishing
usually people are completely talking out of their asses based on tiny tidbit they picked up sometimes
there are multiple forms of jamming. the basic one is just blasting noise on the required frequencies. the problem here is that you need to overwhelm a very sensitive receiver on various frequency ranges and widths (anywhere from 27MHz to 6GHz, maby 200MHz wide ranges) at a distance of a few hundred meters. good luck with that.
next level would be protocol based jamming where you understand the communication format and mess with that. this is e.g. used in GPS jamming to convince the receiver that it's on another location
but all those methods can be mitigated against and drones can operate autonomously without any user input
a magnetron won't do shit a few dozen meters away, even with a correctly constructed waveguide. look at some youtube videos of russians messing with them and random electronics
a laser downing a drone? WTF?
there's a reason why we see in those "anti drone guns" advertisements their usage on consumer grade DJI copters
You can phase lock magnetrons, how big of a scale you want to go to?
The solid state emitters on the Aegis can put a 6 MW pencil thick beam on a target and zorch unshielded planes.
Anon you can simply buy deuthers already programed to be a watch or plug into phone, the watch ones allow for a wide amount of antenna, get a beefy one and ur good for a whole block or hotel, don't ask how I know
been axing that myself after being "drone raped"
my guess is that they are spoofing the GPS signal
Commercial drones use very narrow and well published bands + powers for their control signals and TV, so you could just noise jam that. You can look it all up from FCC I think. Downside is you will probably knock out WiFi in the neighborhood which makes people angry.
Look up the frequency ranges for standard drone control radio systems, and then build a set of transmitters and directional antennas for those frequency ranges. Fancy mode: add random noise generators to the transmitters.
If you want it portable, then you need to deal with a power supply, either battery or a backpack generator.
>Downside is you will probably knock out WiFi in the neighborhood which makes people angry.
Meh, directional antennas are pretty good at directing RF energy. If you don't make a yagi, then frick you, and also you'll need a hell of a lot more power output so your jammer won't be very effective.
Show me on the doll where the bad drone penetrated you with its throbbing member.
This.
Because birdshot won't do much when the drone is up to 400ft AGL and likely further away laterally. The pattern would spread out enough to miss a Phantom or Mavic, and even if you get a lucky pellet or two to hit the craft, it won't do more than scratch it, assuming you're not within standard bird hunting distance of it.
The FAA has been going after drone shooters more often. That guy in Kentucky would have been toast if the drone owner approached the FAA and requested their assistance.
Not true. The FAA is the agency solely responsible for managing navigable airspace within the United States, and has designated all class G airspace below 400ft above ground level as open to drones. There is no ownership of airspace up to a certain altitude by private individuals, or local or state organizations. There are regulations regarding overflight and harassment of nonparticipants, but those are based around behavior of the pilot rather than altitudes or property boundaries. Private, local, state, and federal entities can prohibit bringing drones onto their property, but they can't prohibit overflight.
Source: I work with these things for a living.
I wouldn't bet on jamming against military drones, they could just build an Ad hoc network by linking multiple drones.
>yeah im an insurrectionist, i've got like a dozen memes i post online when people are talking about politics.
It's really a matter of distance. If the drone is being controlled from a satellite a thousand miles away then jamming is fairly easy. If the drone has a controller maybe half a mile away then it gets more complicated. Signal intensity drops off with range and jamming needs to be more powerful than the signal.
Yes and no, RF signal is a lot better at traveling through space and the ionosphere than from the ground up.
This setup overwhelm drone radio with noise on their control channels. But that only stops the drone, it can still transmit video feed. So you also need another transmitter which would make video feed reception impossible. You can also jam or spoof GPS signal to force it to crash or land
>what would it take to assemble a 80% drone jammer
Directional antenna, beeg battery and powerful radio transmitter tuned for required frequency.
first step would probably be acquire your own drone and control box.
I'm assuming DJI etc all use certain freqs but each drone/controller has secret code maybe encrypted with receiver in its drone. But I guess just jam those freqs since your jammer will be lot closer that controller.
But regardless I'd say first step would be buy a drone and 2nd step would be join you local HAM club and some guy will have equip to determine what needs to be jammed and know how to make a jammer (for amusement purposes only of course, many HAM types are very uptight about laws)
I think somekind of device that detects the presence of drone control and video signals would be useful.
The signals are usually very low wattage and spread spectrum, hopping all over. You would be looking at clutter trying to get a picture of what's near and not far. A waterfall freq analyzer might tell you something is near by, but to decypher the pattern of hops is a well guarded secret.
>80% drone jammer
No such thing afaik. 2nd Amendment doesn't cover electronic broadcasting equipment, including jammers. That's a whole different area of law, going back all the way to the Communications Act of 1934, with various FCC regs and state laws thrown on top for good measure.
While yes you'd be violating FCC law as says,
That shit doesn't matter because
A) you'll never make the stuff you need
B) the complexity of design and knowledge needed to make such jammers is enough to allow the system to scramble itself from Radio Direction Finding operators.
A drone jammer requires a bit more than just hardware.
You also need to learn and do programming to control the hardware, as jammer systems are so illegal you will not find -any- knowledge for reference.
I will not go into details, but,
To jam (any signal) effectively requires at a minimum the following:
Multiple points of recieve/transmit.
This means, at the easiest for the "home hobbyist",
At least 3 and preferably 5 minimum sets of both a quality SDR,
Computer of at least the mid-high range of a 2015 generation (GPU not needed though I'm sure it could be made to process better as most GPGPU does),
Remote controllable transceiver (remote meaning the computer that processes your SDR's input automatically commands the transmitter radio),
Antennas sized well enough for broadband transmit and recieve, as well as automatic radio-electrical tuning control (read about HAM antennas and balanced inputs if you need some basic reference knowledge)
Custom software on those computers capable of both linking all the data together real time and rapidly searching for, modulating your transmitters, and powerful enough to counter-phase the enemy transmissions in a given range you define while designing the entire system,
and
The power infrastructure for each SDR+Computer+Transceiver pack to operate for an acceptable amount of time based on absolute maximum iness and egress successfully.
(2/2)
Lets say you want to auto-track and jam across a 500 yard area for 4 hours to ingress and egress successfully. Your 5-point system will require at least 120AH of battery per pack to constantly recieve, process, and transmit to maintain the radio output power necessary to counter-phase in real time with minimum delay time to disrupt the OPFOR.
This shit would be expensive, time consuming, and require a high level of programming+radio function knowledge to make work.
There's a reason why the USA mil's 5-man jammer gear costs nearly a quarter million USD each.
It is specialized knowledge on unpublished tech/operation requiring the fusion of three different areas of radio operation, needing a beefy reliable computer and considerably bulky battery supply.
Good luck!
just shoot it with some micro wave
This, get a few microwave oven magnetrons that spew in the 2.4 Ghz range and probably make the wave guide right(math).
The exposed wires from the drone controller for antenna, and motor BLD controller power wires would pickup and resonate/heat the thing up over a few seconds.
I would not advocate using such a thing in the domestic arena.
As much as you would like to shut up the thumper car next to you and blow their transistors up.
Grandma's pacemaker across the street might quit or auto defib her. A friend of mine playing with wifi antennas and amplifiers learned the hard way as his pacemaker started to quit.
Same for police drones. Sure, you can make a IR laser in the hundreds of watt range and melt the drone. It's not visible to the eye, but can damage you. Other cameras will see the IR beam and will be easy to locate once spotted.
There was a guy in Portland who faced 15 years and 250K fine for just shining a pointer at incoming jets to PDX.
But on the battlefield, that's another story.
Most of the DJI drones operate in the 2.4 ghz and 5 ghz bands shared with ovens and cell phone towers. If you want to jam the band, make a triangle wave generator, and amplify it. Using an old 900 mhz RF output module from a VCR would be a good start and let the harmonics do the job.
In the video, you can see the ease of construction at your own risk. It's a lion battery , a lamp, a switch, a stiff stun gun, and wired to three oven magnetron/tubes. And a cone for a waveguide. For educational purposes.
A powered magnetron from a 1000 watt microwave wil destroy any cell phone within 100' and will likely harm drone receivers.
I'd rather use magnetrons to make radar arrays but yeah
...if a radar is powerful enough, could it kill a drone?
Yes, absolutely. The drone doesn’t care whether the radio waves come from a microwave gun or a radar
You do not need all that to jam a single drone.
You overwhelm with microwaves and rf static on the same bandwidths.
Your statement is to make it seem impossible and thus your a neigh sayer trying harm us
Why do all that when bird shot is cheaper?
Because real-time shutting down of all radio broadcast not approved by your group is FRICKIN' BALLER SON.
A yagi has better range.
Lasers past 5 mW power would take them out and they are readily available. A minor problem is for the backyard builder would be the stabilization rig, but those aren't that hard to fabricate.
This goober disabled the camera in a short amount of time and I can guarantee the cameras used in police activities are even more sensitive to lasers.
>military gear is the same as some $200 Best Buy drone
Are you fedposting or just stupid?
Quadcopter drone cameras, nevertheless all cameras, are incredibly sensitive to lasers at the very least. Predator drones are too high in altitude for a handheld laser to accurately stabilize and point, but quad-copters are still in very much in danger of getting brought down by the hobbyist.
https://www.youtube.com/c/styropyro
This channel is almost a step-by-step guide with pictures to easily make a laser that could bring down a police quadcopter.
I said
>are you stupid or fedposting
because all mil-spec drones will have infrared with visible light filters, making any conv8enent and affordable (up to $500 range) lasers ineffective.
So again I ask,
Are you fedposting, or just stupid?
That drone is cutting edge and costs 1400.
inb4 cops just start duct taping laboratory laser safety goggle lenses infront of the camera lens.
Laser safety goggles are generally only effective for one wavelength, the more wavelengths you block the darker the goggles will be.
A filter that filters out all visible and infrared light is a lens cap.
Make a multiple emitter laser system to increase your impact area.
At a certain level of wattage, you won't be worrying about the camera being blinded permanently. The metal and plastic bits will be molten. That's not conducive for propellers to work or the frame of whatever is on fire.
The FAA considers everything flying in their airspace to be sacred. In their eyes, you shooting down a drone is no different to you shooting down a 747
who cares what those fricking nerds think.
doing some research right now on drone warfare and this is really helpful. Anti drone tech is only going to get better. Would imagine that for stuff this technical though, most terry/nonstate orgs are just going to be funded and sourced by benefactors rather than building drone jammers in their basement.
>In their eyes, you shooting down a drone is no different to you shooting down a 747
That's how the law is written, but it's not how the government selectively enforces. I've read several articles over the years where some moronic redneck was convinced that his neighbor was spying on his trailer park landwhale of a wife, and shot down (generally literally, as in with a rifle) the drone. So far every case has had the cops laughing at the drone owner for thinking that they'd bother helping him out. This one even made it to court where the judge said "frick you, drone pervert" even though the drone guy proved he wasn't trying to ogle anyone's breasts (but the neighbors said "sure he was!" and the judge said "I believe them, not the actual video and flight recorder data.").
https://www.cnet.com/culture/judge-rules-man-had-right-to-shoot-down-drone-over-his-house/
Apparently police are the only ones who should be allowed to own drones because civilians will just use them for seeing neighbor breasts or firebombing protesters, not like the trained professionals.
The key part of the ruling is that it was flying over someone else's land. Legally speaking, you own not just the land but about 50 feet of air above it.
>Why do all that when bird shot is cheaper?
Do you pee off your front porch too, fren?
I do. Nothing more american than waking up at 5am hungover, walking naked to your bacm porch with the dirty birdy and letting loose a 30 round salvo while letting piss hit the dirt in front of you. Thats america in one action baby, that's what peak performance looks like.
Just 3rd order PIM their signals
Always wondered if this would work
Long range drones don't use microwave frequency, but for most drones your neighbor can buy yes it'd probably work.
That's assuming the antenna/link orientation and data integrity are just right/just mucked enough.
Cheap drones, yes.
But modern (commercial and military) probably not. They have 4x4 MIMO phase array antennas for beam forming. If you're not next to the controller, you'd need very powerful jammer to do anything.
microwaves
After reading several of these threads, I'm convinced the best/easiest way to deal with a drone is to shoot it down with conventional arms rather than trying to radio-jam it.
like any other jamming. There's a signal being used to transmit data to the drone. A jammer would be a more powerful signal on the same or similar frequency/modulation to disrupt or completely overtake the real signal.
the knowledge larping in such threads is astonishing
usually people are completely talking out of their asses based on tiny tidbit they picked up sometimes
there are multiple forms of jamming. the basic one is just blasting noise on the required frequencies. the problem here is that you need to overwhelm a very sensitive receiver on various frequency ranges and widths (anywhere from 27MHz to 6GHz, maby 200MHz wide ranges) at a distance of a few hundred meters. good luck with that.
next level would be protocol based jamming where you understand the communication format and mess with that. this is e.g. used in GPS jamming to convince the receiver that it's on another location
but all those methods can be mitigated against and drones can operate autonomously without any user input
a magnetron won't do shit a few dozen meters away, even with a correctly constructed waveguide. look at some youtube videos of russians messing with them and random electronics
a laser downing a drone? WTF?
there's a reason why we see in those "anti drone guns" advertisements their usage on consumer grade DJI copters
You can phase lock magnetrons, how big of a scale you want to go to?
The solid state emitters on the Aegis can put a 6 MW pencil thick beam on a target and zorch unshielded planes.
Anon you can simply buy deuthers already programed to be a watch or plug into phone, the watch ones allow for a wide amount of antenna, get a beefy one and ur good for a whole block or hotel, don't ask how I know