Airmar B275C-LHW Bronze Thru-Hull - Low High Wide Frequency - Requires Mix Match Cable [B275C-LHW-MM]B275C LHW Bronze Thru Hull Low & High Wide Frequency Requires Mix & Match Cable Get more coverage under the boat with Airmar's wide beam CHIRP product line. Offering a high frequency range of 150 250 kHz and a constant 25 beam width, these transducers are truly broadband at its best. In addition to improving the performance of CHIRP ready echosounders, anglers using the new wide beam transducers will achieve twice the coverage under the boat compared