Hi bob, It sounds like you are asking for two different things. First you asked for a sonar transducer and then later a circuit. Friendly regards, Bob On Sun, Jan 3, 2016, at 04:48 PM, BOB wrote: > I need to find a sonar transducer that transmits in a full 360 DEG=20 > pattern. All fish locators/ depth finders transmit in a 60 DEG cone. >=20 > I also need some one who can design a circuit that would send out a ping= =20 > for a short time ( less then 100MS) Also the circuit would listen for a= =20 > ping and thenout put a signal. >=20 > I have communicated with design techs work with fish locator and sonar=20 > units. They tell me they cant help but claim it would be a peice of=20 > cake for an electronics technician to design a circuit. >=20 > Is there any one out there who has the ability to do this and would want= =20 > to help with this? >=20 > bob --=20 http://www.fastmail.com - Same, same, but different... --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .