Broadband 4G™ Radar


Limited availability.

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Model # 12971263 | Mfg # 000-10421-001 | UPC # 9420024111017

Solid state radar with many advantages over old-school pulse radar.

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.

Key Features

  • No Main Bang: Revolutionary FMCW technology.
  • Lowest Emissions: Broadband Radar is so low in emissions, it beats your mobile phone!
  • InstantOn: InstantOn provides an almost instant radar image. No waiting for your radar to warm up before use!
  • Maximum Clarity: Broadband Radar’s target separation is unbeatable in a compact radome.
  • Beam Sharpening: Broadband 4G Radar is the only dome radar in the world to employ Beam Sharpening, which allows you to control the level of target separation, so you can see the sharpest images possible when you need them most.
  • More Range: 18 range scales up to 36 nautical miles. Now you can see crystal clear targets up to 32 nautical miles away and inside strong storm cells more than 17 nautical miles away.
  • Dual Range: Capable of displaying Dual Range radar combination when combined with a Zeus system. Monitor targets from 200 feet to 32 nautical miles from a single dome.
  • Unrivaled Short Range: Outstanding performance where it matters most, within 200ft.
  • High-Speed Mode: Select 48 RPM for almost instant updating at under 1 nautical mile.
  • Low Power Consumption: Ideal for sailing boats of any size.
  • Quick Installation: No reason to open the dome, no tune or zero-mile adjustment, and no radar-licensed technician required.
  • MARPA Target Tracking: Track up to 10 targets as standard or 20 in Dual Range mode.


  • 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)
  • Amperage: 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

What’s in the Box

  • Broadband Radar
  • Radar interconnection cable
  • RI10 or RI11 Radar interface box (not included in the Lowrance 3G USA model)
  • Ethernet cable: shipped with 1.8 m (6 ft)

Sold Separately

  • Display: Simrad NSO, NSE or NSS / B&G Zeus / Lowrance HDS
  • SimNet or NMEA 2000 data network
  • Option heading sensor required for MARPA and chart overlay
  • Radar mount of your choice

Installation Manual


Broadband 4G™ Radar

Name Value
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 Separately
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
Waterproof Waterproof


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Broadband 4G™ Radar


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