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Depending on the frequency radio waves can have extremely narrow beams. If an antenna is not literally in the path of the beam it can't detect it. Microwaves ha
by giantrobot 6y ago
Depending on the frequency radio waves can have extremely narrow beams. If an antenna is not literally in the path of the beam it can't detect it. Microwaves happen to be readily formed into tight beams. If an embassy had a monitoring system a microwave brain cooker beam might have just looked like a splash of static if it was detected at all. Multiple beams would likely be used so only their focal point (someone's head) would feel the full effect and so monitoring would be even less likely to detect such beams.
- sudosysgen 6y agoYou can have two of the following three. Small size (less than thirty meters), low scatter, and power. If you're going to have a powerful microwave brain frying system radiating over a 50m^2 area there is no way you're not going to light up the neighborhood in EM. Just can't happen, sorry.
- giantrobot 6y agoI don't know why you think a brain frying system needs to operate over a 50m^2 area or why you think it needs to be small. Buildings with windows exist as do building across from those windowed buildings. Maybe some day someone will invent phased array antennas and you'll be able to direct narrow beam emissions without having to physically move the antenna. I can dream I guess.
- sudosysgen 6y agoPhased array antennas have very high scatter compared to classical antennas of a similar size, Because they scatter in lobes. 50m^2 is quite small. There is no reasonable way of knowing where your target will be across a wall. But even if you made it only 5m^2 you'd still be dumping off-axis like a 100w omnidirectional antenna at the very best.