Hello to arduino Forum.
I would like to know if there is any module/technology capable of making a wireless communication with the Arduino transmitting from the underground to the surface with layers of rock, at a distance of up to 1 km.
srnet
May 7, 2020, 4:17pm
3
I would doubt it also, some details of underground communications here;
Through-the-Earth (TTE) signalling is a type of radio signalling used in mines and caves that uses low-frequency waves to penetrate dirt and rock, which are opaque to higher-frequency conventional radio signals.
In mining, these lower-frequency signals can be relayed underground through various antennas, repeater or mesh configurations, but communication is restricted to line of sight to these antenna and repeaters systems.
Radio communication within caves is problematic because rock is a cond...
I doubt its the sort of stuff you can buy on eBay.
Cave radio has been a thing for quite some time, check:
http://www.scavalon.be/avalonuk/technical/radio1.htm