That is where I’m not sure and not going into more detail for the kiddos. Seems most frequencies the slot is the key and then some material that does the lens(es) work. The other way around with some materials that are clearly visible to see through, the other frequencies can’t transmit through. So what at first I visibly, like with microwaves or other frequencies that are lower, can’t see through… the other frequencies can pass through and can transmit through and not so much diffuse, refract, reflect, etc. Is interesting the different frequency ranges and the types of materials that act as the types of different lenses. In regards to online easily found references… not so much now days.
The transition from electronics, amateur radio to RF “e” engineering or to RF “E” engineering. Perceiving microwaves is another world really in regards to components also and even say traces on PCB design. Seems of few years back I could easily google search and bring up results for microwave collimators and waveguides (great call on waveguides). Posted in classic hacks Tagged em, emp, magnetron, magnetron cannon, microwave, microwave cannon, microwave gun Post navigation For more microwave goodness, check out this attempt to recreate the TSA’s body scanners. Overall it’s a solid attempt to recreate someone else’s work to verify the results, a cornerstone of science. We did bristle somewhat at the valiant 18650 being described as a “vape battery”, however. puts forth the theory that the explosions seen in the original footage are far more likely to be from small firecrackers rather than any electronic components dying from microwaves. The microwaves cause no explosions, and the device doesn’t seem to have anywhere near the 50-foot range claimed by for their device. Scaling up to the full triple magnetron setup with a cardboard and foil feedhorn, is, at best, able to crash a calculator at a distance of a few feet. starts by experimenting with a single magnetron, successfully using it to light a compact fluorescent bulb at a range of a few centimeters. This setup could light the bulb at a distance of a few centimeters. Most criticism centered around the nature of the power supply to the magnetron falling short of the usual 700-1000W seen in a microwave oven. However, many of those watching the video doubted the footage. ’s original video was impressive, showing everything from home stereos to a humble moped exploding when in the presence of their powerful device. It all seemed a bit too good to be true, so decided to try and replicate the results for himself. Almost exactly one year ago, published a video detailing an EM “weapon” built out of three magnetrons, some batteries, and a taser.
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