CACHE, SONAR WAVES DO NOT TRANSMIT THRU AIR,I THINK I AM RIGHT,THAT IS WHY WE PICK UP AIR BUBLES AND IF TRANSDUCER COMES OUT OF WATER THAN IT WILL NOT TRANSMIT,YOU ARE RIGHT ABOUT THAT
Maybe that's why I don't hear so well!
I DO MY BEST PROOFREADING RIGHT AFTER I HIT THE "SUBMIT" BUTON