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The Koden CVS-1420 is a professional broadband echo sounder / fish finder designed for commercial fishing vessels, offshore operations, and navigation support. It is part of Koden’s advanced CVS series and is known for its high power output, wide frequency range, and excellent deep-water performance.
The CVS-1420 operates by:
| Parameter | Specification |
|---|---|
| System Type | Broadband digital echo sounder / fish finder |
| Display Type | Color TFT LCD (anti-reflection, sunlight readable) |
| Display Size | 10.4 inch |
| Display Resolution | ~640 × 480 (VGA) |
| Technology | Broadband + Digital processing (KDF™) |
| Frequency Type | Dual / broadband selectable |
| Frequency Range | ~28 kHz – 220 kHz (transducer dependent) |
| Frequency Options | Multiple selectable (fixed & broadband transducers supported) |
| Output Power | 1 kW – 3 kW (RMS) |
| Depth Range | 2.5 m – 2000 m |
| Minimum Depth | ~2.5–3 m |
| Operation Mode | Auto / Manual |
| Signal Processing | Koden Digital Filtering (KDF™) for noise reduction |
| Noise Reduction | Advanced digital filtering |
| Bottom Tracking | Automatic seabed detection |
| Bottom Hardness Display | Yes (% indication) |
| Fish Detection | Yes (fish target & school detection) |
| Display Modes | High freq, Low freq, Dual freq, Zoom, Bottom lock, NAV mode |
| Split Screen | Vertical / Horizontal split |
| A-Scope Function | Yes |
| Zoom Function | Bottom zoom / discrimination / follow zoom |
| Image Storage | Up to 10 images |
| Alarm Functions | Fish, bottom, temperature*, speed*, arrival*, XTE alarms (*optional sensors) |
| Special Functions | VRM, white line, interference rejection, event memory, simple plotter |
| Gain Control | Automatic / Manual |
| TVG (Time Variable Gain) | Automatic |
| Interference Rejection | Yes |
| Interfaces | NMEA compatible |
| External Output | RGB output for external monitor |
| Transducer Type | Wide range (fixed & broadband types supported) |
| Power Supply | 10.8 – 31.2 V DC |
| Power Consumption | Low–moderate (marine standard) |
| Waterproof Rating | IPX5 |
| Dimensions | 320 × 364 × 184 mm |
| Weight | ~7.8 kg |
| Application | Commercial fishing, offshore vessels |
| Compliance | Marine electronics standards (non-IMO primary navigation) |
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