Thought? what do you think

[lamarc]

Is it possible to take a fish finder and make a ground penetrating radar out of it. Lamar

[Carl-NC]

Basically, no. Fish finder transducers are designed for the acoustic impedance of water. If you hold one above the ground, whatever ultrasonic wave is produced will just bounce off the ground. In order to penetrate the ground, you would need to bury the transducer, probably in a gel to get a good interface.

- Carl