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Emergency Beacon Locating system w/ buoy

This device uses three beacon receivers to identify the location of the beacon transmitter.
Build this into your helicopter or ship, turn it on and the monitor will show the position of the vehicle and the distance to the beacon transmitter in a circle.
When a buoy is dropped, a new circle (the distance from the buoy to the transmitter) appears around the buoy.
There should be a transmitter at the intersection of the circles.

White and orange blocks: the essential parts
Blue block: you can replace it with another part of the same function
Black blocks: no need, just a base


If you use it in your vehicle, a link to this page would be appreciated but it is not a requirement.