best 7 gps fishfinder combo
The solar functions with 83/200 KHz frequencies. The optional XNT9 DB 74T transmitter uses 50/83/200 kHz frequencies. It increases the depth capability to 3,000 ft. DualBeam Plus sonar works with both frequencies simultaneously, creating images in split-screen displays or blended displays. The sonar covers a 60 degree cone at 83kHz. The cone of 200 kHz is narrow and covers only 20 degrees.