Table 2: CHIRP sonar relies on a combination of frequencies, which can range from 42 to 250 kHz, depending on the water depth. Low frequency 2D sonarĬone size Wide cone, 27 degrees Medium cone, 20 degrees Narrow cone, 13 degrees Water depth > 300 ft. deep, the frequency is usually 200 kHz (see table 1 below), which covers most freshwater and inshore applications. The exact wavelength used by traditional 2D sonar depends on the depth of water in which you want to use it. So, if you’re wondering, what is the difference between CHIRP and traditional sonar, it’s this: while traditional 2D sonar relies on a single frequency to gather sonar information, CHIRP sonar uses a combination of different frequencies to gather more complete and more detailed information. What is CHIRP sonar?ĬHIRP stands for Compressed High Intensity Radar Pulse, and is not actually a separate sonar technology, but rather an improved version of traditional 2D sonar. In this article we’ll show you how to read CHIRP sonar, which is one of the most powerful sonar technologies available for fish finders. If you want to take advantage of the full potential of fish finders to help you catch more fish, you need to understand the basics of sonar signaling, and how you can use different types of sonar for your specific needs. However, they come in a bewildering variety of models, each with different specifications, and with different combinations of sonar technologies.
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