Airmar B175HW Bronze Thru Hull 20 Tilt - 1kW - Requires Mix and Match Cable [B175C-20-HW-MM]B175HW Bronze Thru Hull 20 Tilt 1kW Requires Mix and Match Cable Get more coverage under the boat with Airmar's new 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 to our