Wave Bubble DIY RF Jammer. Here’s a detailed design and description of how to craft a cigarette packet sized RF jammer. Now as far as we know these puppies are significantly illegal in certain places of the world, but for those of you who live in Greenland, here’s the long and tall of it. But remember peeps, cell phone users aren’t annoying, it’s just their very loud, boring, uninteresting conversations that are.

This website details the design and construction Wave Bubble: a self-tuning, wide-bandwidth portable RF jammer. The device is lightweight and small for easy camoflauging: it is the size of a pack of cigarettes. An internal lithium-ion battery provides up to 2 hours of jamming (two bands, such as cell) or 4 hours (single band, such as cordless phone, GPS, WiFi, bluetooth, etc). The battery is rechargeable via a mini-USB connector or 4mm DC jack (a common size). Alternately, 3 AAA batteries may also be used.