Dayu Electronics: How Deep Can a Single-Beam Fish Finder with Two Different Frequencies Measure?

How deep can a single-beam fish finder with two different frequencies actually measure?

Take Garmin's original STRIKER Cast, for example. It is also a single-beam fish finder that uses two frequencies: 260 KHz and 455 KHz.

The maximum measurable depth is 45 meters.

Take Hikvision's FS01, for example. It is a single-beam fish finder that uses two frequencies: 310 KHz and 110 KHz.

At 310K, it can detect down to 50 meters with accuracy ≤0.1 meters.

At 110K, it can detect down to 100 meters with accuracy ≤0.2 meters.

Take Humminbird's single-beam model, for example. It is a single-beam fish finder that uses two frequencies: 200 KHz and 77 KHz.

At 200K, it can detect down to 50–70 meters.

At 77K, it can detect down to 70–100 meters.