Airmar B75 High 12 Degree Thru-Hull Tilted Element 8-Pin [B75C-12-H-8G]B75 High 12 Degree Thru Hull Tilted Element 8 Pin Airmars Broadband CHIRP transducers represent the next generation of technology that will allow fishermen to unlock secrets in fishfinding. Echosounder operation away from the traditional 50 kHz and 200 kHz has proven that different fish species return better signals at various frequencies. Airmars Broadband Transducers are capable of operating over a wide (or Broad) frequency band ranging from 25 kHz