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Broadband 4G™ Radar


Extended Product Protection with PLUS Plan!

Model # 12971263 | Mfg # 000-10421-001
In stock online.

Broadband 4G™ Radar offers all of the benefits of the Broadband 3G™ Radar, including a true 200' working range, plus some spectacular extra features. Broadband 4G has an impressive 50 percent more true range than Broadband 3G. Now you can see crystal clear targets up to 36nm away and inside strong storm cells more than 17nm away.

Broadband 4G Radar is the only dome radar to incorporate Beam Sharpening, which gives an effective azimuth resolution of a 3.5' open array with Target Separation Control for unrivaled clarity in every situation, giving you the confidence to navigate in any state of visibility. It’s capable of displaying any dual range radar combination, as well as 48RPM and up to 20 MARPA targets, which allows unprecedented simultaneous working ranges, anywhere from 200' up to 36nm in 18 range scales. No other radar in the world can do this.

  • Transmit Power: 165mW
  • Maximum Range: 200' to 36nm with 18 range settings
  • Effective Horizontal Beamwidth: 2.6°
  • Rotation Speed: 24/36/48rpm
  • Height: 11"
  • Radome Diameter: 19 3/16"
  • Weight: 16.31lb.
  • Voltage: 9V to 31.2V DC (12/24V systems)
  • Draw: 1.45A (20W @ 13.8V DC); 170mA standby (2.5W)
  • Data Interface: NMEA 0183, NMEA 2000/SimNet, High-speed Ethernet
  • Waterproof Rating: IPX6
  • Warranty: Two years

Broadband 4G™ Radar

Amperage 170mA (Standby)
1.5 Amps (Transmit) at 13.8 Volts DC
Beam 5.2 Degrees H x 25 Degrees V
Dimensions 11" Height x 19.2" Diameter
Display Color Sold Seperately
Features Waterproof
Maximum Range 36 Nautical Miles
Rotation 24/36/48 RPM
Transmit Power 165 Milliwatts
Type Radomes
Voltage 9 to 31.2 Volts DC
Warranty Details Two Years
Weight 16.31 Pounds

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by PowerReviews
Simrad Broadband 4G Radar

(based on 1 review)

Ratings Distribution

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Reviewed by 1 customer

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(19 of 21 customers found this review helpful)


Failed to function correctly


from Florida

About Me Advanced


  • Easy To Install
  • Good Close Range Targets


  • Only Worked 50 Of Time
  • Poorly Designed
  • Poor Technical Support
  • Software Glitches

Best Uses

  • Large Boats
  • Small Boats

Comments about Simrad Broadband 4G Radar:

Liked the concept of 4g Broadband radar. It was easy installation with plug and play units teamed with B & G Zeus touch 7. However from the start the MFD would fail to show the radar transmit screen 50% of time on start up. Mounted on mast there was a large blind spot behind (which the pulse radar does not have when mounted in exactly the same location). When radar did work then the close range target acquisition was good but mid range was average and long range was poor and it did not pick up rain squalls. The B & G MFD unit was unreliable and required frequent reboots.

Service and delivery comments:

Easy to install. But when the radar failed to function correctly Navico technical support team blamed self installation. When we contacted the approved Navico technicians we could find no local technician with hands on experience of 4G radar and B & G Zeus touch series MFD so all they could check was is there adequate 12 volt supply. If not, then substitution of cables and units would be the only solution to find the fault ......... but the technicians carried no spare cables or units and so eventually the units would have to be sent back to the factory taking 5-6 weeks. We did actually purchase ourselves as Navico had no stock in the warehouse a substitute unit but that failed to solve the problem. At this point everything was returned to Navico. We would like to make it clear West Marine were not at fault and their staff and customer support team were helpful throughout.

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