3D Fishing Sonar Fish Finders Forums
A 3D fishing sonar fish finder uses a high-resolution horizontal display to detect fish schools all around the vessel. It produces echoes in the water column from the depth of four to six meters. When a fish strike, its echoes indicate the position of the target relative to the boat. best fish finders under 200
Unlike a 2D fish finder, a 3D fish finder’s display is highly detailed. Its high-resolution imaging means you can see every detail of the bottom. Some units also offer 3D bottom imaging and target discrimination. These features are important for accurate fish finding.
The Down Scan feature offers a detailed photo-like view of the bottom. This technology has several brand names, including Lowrance’s DownScan, Garmin’s DownVu, and Humminbird’s Down Imaging. While traditional 2D sonar only shows the boat’s radius, Downscan shows details straight down. Both types of sonar are useful, depending on their use.
The Humminbird MEGA and Lowrance MEGA sonars both use a high-frequency 1200 kHz transducer to produce an ultra-clear image. However, the MEGA features only come in HELIX models. Garmin’s Ultra and ECHOMAP units also have megahertz capability. 1.2 MHz SideVu is available in some models. Those with DownVu capability must use GT56UHD-TM transducers.
Furuno has been building 3D sounders for years. They introduced a recreational 3D sonar in February, taking a slightly different approach to the competition. Its model, the DFF-3D, uses eight ceramic elements and phase-shifting. The Furuno DFF-3D’s operating frequency is 165 kHz, which is lower than the common imaging-sonar frequency. In addition, Furuno DFF-3D has a lower frequency, allowing it to be used at greater depths.