Microwaves are extremely dangerous. They can PERMANENTLY HARM YOU! If you feel even the slightest uncertainty towards the physics, dangers, and overall understanding of microwaves, DO NOT construct a microwave weapon

The Construction

The best way to create a homemade microwave weapon is with an old microwave. If you want to upgrade to a more powerful, long range device, it's practically impossible unless you have a physics lab with extensive measuring equipment. However, an average microwave puts out 1,000-2,000 watts of energy, quite enough for destroying electronics.

Microwaves tend to "fly in all directions" unless they are directed. However, this is what the antenna does—directs the microwaves. In my experimentation, I discovered that a slight cone-shaped metal funnel has the best microwave-focusing ability. I was able to fry an old cell phone from up to 10 feet using three magnetrons and one funnel. This constitutes to about 6,000 watts (W) of directed energy, quite an accomplishment for 15 bucks spent at a thrift store. The circuit diagram for each individual magnetron looked something like this:
circuit diagram
On a basic level, the circuit consists of a transformer, a voltage doubler (diode and capacitor) and a magnetron. The three MOTs draw lots of power, so I had to hook everything into a thick, direct mains line. The magnetron itself looks like this:
magnetron
There are two large magnets that "direct" the electrons as they pass through the antenna. Also, the device has a heat sink to cool off. There are many other components and function aspects of the magnetron that are very complicated, but interesting. If you're curious, check this article.
Once finished, the entire apparatus should look something like this:
apparatus
The waveguide (or metal funnel cone) guides the microwaves in a linear direction, and allows them to be focused in a specific direction. Once directed, the microwaves can generate electrical current in any conductive metal they encounter. How much electricity they generate is determined by the distance from the magnetron and the power of the output. The microwave gun will also disrupt wireless communications (depending on their frequencies) and excite water molecules.

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Pub: 11 Jan 2023 08:11 UTC
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