[0xfaded]

Blue Robotics sells the fathomX exactly for this purpose. I wouldn't be surprised if it uses the same chip set.

https://bluerobotics.com/store/comm-control-power/tether-int...

[yosheli123]

That tops out at around 300meters. Ours goes beyond 1km. Still there's is awesome for camera feeds; I love the Blue Robotics hardware, SPEBlox Long is just a different application (more industrial automation focussed)