The OP here. I'll explain what it is later if no one cares to guess.<p>If you're interested in electronics, you probably know its name and purpose, as I did. But it happens to be a little difficult to "extract". I had been meaning to get my hands on one of these for ages. Finally got one!<p>What's so intriguing to me is that the internal <i>geometry</i> is what makes it function, and was (as I understand it) the genius involved in making the first working version.
Could a home microwave's magnetron be converted into an antenna? what possible use could it have?, are they good for data transmission? the microwave antennas I mean, not the ovens.. It could be cool to have a dyi super high power wifi of some kind!