Solid State Doppler Radar DRS6A-NXT/DRS4D-NXT, Radar RedefinedSolid State Doppler Radar DRS4D-NXT, Radar Redefined


The NXT chapter in Radar technology !

NXT radars are Solid-State Radars utilizing Doppler technology to ensure the safest navigation. The NXT series features Target Analyzer™, Fast Target Tracking™ and Auto Target Acquire function to offer optimal detection and sensitivity of hazardous objects. Combined with RezBoost™ technology, the NXT Radars have no equal in spotting and tracking targets moving around your vessel efficiently with a high resolution.



Target Analyzer™ function utilizing Doppler technology spots hazardous targets instantly!

Doppler Target Analyzer

The NXT series are the first Radars in the world to use FURUNO's exclusive Target Analyzer™ function. Targets that are approaching your vessel automatically change color to help you identify potentially dangerous targets. Green echoes are targets that stay stationary, or are moving away from you, while red echoes are hazardous targets that are moving towards your vessel. Echoes dynamically change colors as targets approach, or get farther away from your vessel. Target Analyzer™ improves situational awareness and can increase safety by showing you which targets to look out for.

  • Target Analyzer™ ON

  • Target Analyzer™ OFF

Two approaching targets are depicted clearly in RED when Target Analyzer™ is ON.

  • Hazardous targets are displayed in bright red
  • Target Analyzer™ clearly shows targets close to structures.

Rain mode

[VIDEO] Target Analyzer "Rain mode"

When the “Rain mode” is on, rain echoes are shown in blue. This mode is particularly useful as it has the capability to detect targets masked by rain clutters.

Fast Target Tracking™ and Auto Target Acquire function

Approaching vessel with target vector

With Fast Target Tracking™ activated, it only takes a few seconds for a vector to be displayed once the target is selected, manually or automatically with the Auto Target Acquire function.

When the Auto Target Acquire function is on, approaching targets within 3NM range from own ship, which are potentially hazardous, are automatically acquired by Doppler calculation and will trigger an alarm*.

Together, Up to 100 targets can be acquired simultaneously, increasing considerably the safety and simplifying estimation of other vessel’s course and speed.

*TCPA setting required

Bird Mode

Bird echoesActual scene

NXT Radars feature a new Bird Mode that helps you identify birds gathering around schools of fish at the sea surface. Bird mode adjusts the gain and sea settings automatically for optimal visibility.

RezBoost™ beam sharpening


FURUNO's exclusive RezBoost™ technology has been incorporated into our Radar units for enhanced resolution and impressive performance. With RezBoost™ set to MAX, the sharpness offers an incredibly detailed image with more targets and less clutter.
(the pictures show images captured by the DRS4D-NXT with Standard RezBoost™ and Max RezBoost™ )

  • RezBoost™ standard (DRS4D-NXT)

  • RezBoost™ Enhanced, MAX setting (DRS4D-NXT)

  • Solid-State pulse compression Doppler Radar
    No preheating time, low energy consumption (no use of a magnetron)
  • Revolutionary Target Analyzer™ function instantly identifies hazardous targets
  • Fast Target Tracking™ and Auto Target Acquire function, up to 100 targets
  • RezBoost™ beam sharpening to increase the resolution
  • Effective Horizontal Beam*
    Can reach a value equivalent to 0.7° with DRS6A-/12A-/25A-NXT (XN13A), 2.0° with DRS4D-NXT, and 2.6° with DRS2D-NXT, when using RezBoost™.
  • Bird Mode to find the best fishing grounds by tracking birds
  • Simple installation, no need to open the radome (DRS4D-NXT only), external PSU is not required
  • New smart-connector cable for retrofitting existing DRS cable installations (DRS2D-NXT and DRS4D-NXT only)





Slotted waveguide array Radome (24")(DRS4D-NXT)
Radome (19")(DRS2D-NXT)
Vertical beam width
22° 25°
Horizontal beam width/ Rezboost Effective Horizontal Beam
2.3°/ 1.15° (XN10A)
1.9°/ 0.95° (XN12A)
1.4°/ 0.7° (XN13A)
3.9° (-3dB) / 2.0°(DRS4D-NXT)
5.2° (-3 dB) / 2.6°(DRS2D-NXT)
Antenna rotation speed
24/36/48 rpm range coupled or 24 rpm fixed 24/36/48 rpm range coupled or 24 rpm fixed


Tx frequency

3 channel, auto/manual selectable

Ch # P0N (MHz) Q0N (MHz)
1 9380 9400
2 9400 9420
3 9420 9440
Output power
200 W (DRS25A-NXT)
100 W (DRS12A-NXT)
25 W (DRS6A-NXT)
25 W
Pulselength & PRR
Range Scales (NM)
0.0625-96 (DRS12A-NXT/DRS25A-NXT)
0.0625-72 (DRS6A-NXT)
Pulse length (P0N)
0.04-1.2 0.08-1.2
Pulse length (Q0N)
5-48 5-18
PRR (Hz)
700-2000 1100
Tx frequency (MHz)
9380-9440 9380-9440
Minimum range
10 m 20 m
Range resolution
10 m 20 m
Range accuracy
1% of range in use or 10 m, whichever is the greater 1% of range in use or 10 m, whichever is the greater
Bearing accuracy
±1° ±1°


Number of ports
LAN: 1 port, Ethernet, 100Base-TX, RJ45
Data sentences


12/24 VDC (DRS6A-NXT): 9.5/5.0 A max.
24 VDC (DRS12A-NXT): 5.0 A max.
24 VDC (DRS25A-NXT):  5.6 A max.
12-24 VDC: 2.5-1.3 A


-25°C to +55°C, Waterproofing: IP56


Scanner Unit (RSB-137-119/137-125/137-126), Radiator, Installation Materials, Spare Parts Radar Sensor (RSB-135-115), Installation Materials, Spare Parts
LAN cable 2/5/10 m, Joint Box (TL-CAT-012) Radome Mount (OP03-208), Retrofit Kit (OP03-239), LAN cable 2/5/10 m, Joint Box (TL-CAT-012)
Retrofit Kit (OP03-239) LAN cable 2/5/10 m, Joint Box (TL-CAT-012)

Antenna Unit

3.5 ft Open Array NXT Radar 22kg 48.5 lb
4 ft Open Array NXT Radar 25kg 55.1 lb
6 ft Open Array NXT Radar 27kg 59.5 lb


7.3 kg 16.1 lb


6.5 kg 14.3 lb

Interconnection Diagram

DRS4D-NXT Interconnection Diagram

MFD version compatibility
DRS25A-NXT/DRS12A-NXT: TZtouch3, TZtouch2 V6.21 or later, TZtouch V6.01 or later
DRS6A-NXT: TZtouch3, TZtouch2 V5.01 and later, TZtouch V5.01 or later
DRS4D-NXT: TZtouch3, TZtouch2 V3.01 or later, TZtouch V4.21 or later
DRS2D-NXT: TZtouch3 V2.01 or later, TZtouch2 V7.01 or later, TZtouch V6.03

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