Hi
I am looking for an ultrasonic (sonar) emitter that would be capable of the following:
- working over flat ground (not underwater)
 - can emit an 180 degree beam (or close enough)
 - adjustable or programmable frequencies.
 
This is for a confidential project that is affected by a non-disclosure agreement so can’t give too many specific details publically. But if anymore info is needed please ask.
Thank you so much in advance for your help!