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Key Features

  • True 48nm range with 3-foot open array antenna
  • VelocityTrack™ Doppler technology for collision avoidance (requires heading sensor and GPS)
  • Beam Sharpening with Target Separation Control
  • Dual Range operation with NSS evo2 and NSO evo2 multifunction displays
  • Advanced signal processing with Harbour, Offshore, Weather, Bird, and Custom modes. Other modes available soon.
  • High-speed 48RPM operation
  • InstantOn™, ready in 16-25 seconds from power-on, instant from standby
  • MARPA target tracking, up to 10 targets (20 with dual range)(requires heading sensor and GPS)
  • Low electromagnetic emissions and radiation
  • Low power consumption with 12 OR 24V operation
  • Ethernet connectivity
  • Unique blue LED accent lighting in pedestal with brightness control

Solid-State with Pulse Compression Technology

Simrad Halo Radar is the world’s first high performance, solid-state radar with pulse compression technology designed specifically for light commercial and recreational marine use. Unlike traditional pulse radar, Halo Radar isn’t reliant on a high-powered magnetron (vacuum tube) to transmit. Instead, Halo Radar uses solid-state electronics and low-power 25W pulsed, frequency-swept transmission bursts to deliver pulse radar-like range and resolution, without the associated warm-up time, power consumption, or electromagnetic emissions.

VelocityTrack™ Doppler Technology Built-In*

VelocityTrack™ technology provides instant visual feedback on whether targets are coming towards you or moving away. Using the Doppler effect, this feature automatically checks every target seen by your radar; there’s no need to manually select individual targets, and no limit to the number of targets on screen at one time. Simple colour coding highlights potential hazards, improving your situational awareness and further reducing your risk of collision. *Units with Serial# 1810Zxxxxx onwards- Units prior to this Serial range will require a purchased upgrade. VelocityTrack™ requires heading sensor and GPS.

48nm Range

Halo Radar delivers a maximum range comparable to traditional 6kW pulse radar, at up to 48nm with the HALO-3 Radar’s 3-foot open array antenna. It offers unprecedented 10m (30ft) minimum range, peering into that pulse-radar blind spot where once only FMCW (3G/4G) Broadband Radar could operate.

Beam Sharpening

Separating one radar target from another is key. Beam sharpening provides the Halo Radar with exceptional Target Separation Control for discriminating between radar targets, granting the Halo Pulse Compression Radar’s 3-foot open array antenna the same effective target resolution as an 4-foot array without beam sharpening.

Dual Range Operation

With Dual Range, Halo Radar functions like two arrays in one – monitor two distance ranges simultaneously with independent displays, controls, and totally independent MARPA target tracking. Take full advantage of Halo Radar’s combination of short-, mid-, and long-range performance to keep an eye on faraway weather cells, while monitoring channel markers and high speed watercraft up close. Dual Range operation is available with Simrad NSS and NSO multifunction display systems.

Target Detection

The HALO-3 Radar offers excellent target detection for its compact 3-foot open array. For enhanced target detection in line with tough IEC 62388 Annex D specifications, consider our larger HALO-4 Radar or HALO-6 Radar arrays.

MARPA Target Tracking

Automatically track up to 10 user-selected radar targets, displaying CPA (closest point of approach) and TCPA (time to closest point of approach). Up to 20 different targets can be tracked in Dual Range mode, with 10 targets per screen. MARPA functionality requires a heading sensor and GPS.

Advanced Signal Processing

Halo Radar employs advanced signal processing for digital azimuth and range sidelobe reduction, enhancing discrimination of small targets such as channel markers from larger adjacent targets such as ships and bridges. In addition, Directional Sea Clutter Rejection dynamically changes gain in the sweep to allow smaller targets to be seen in the leeward. Sector Blanking eliminates unwanted reflections, for less clutter on screen.

8 Usage Modes with Automatic Harbour/Offshore Selection

Harbour, Offshore, Weather, and Bird modes tune Halo Radar’s advanced signal processing to help ensure the targets you’re interested in can be seen vividly – even in the toughest environmental conditions. Automatic selection of Harbour and Offshore modes configures your Halo Radar to suit your surroundings, while a ‘Custom’ mode enables easy manual tuning to suit any purpose or condition

High Speed Mode

Halo Pulse Compression Radar provides rapid position updates, with high speed operation up to 48RPM (mode and range dependent). Simrad quality construction and Halo Radar’s brushless motor with advanced helical gear train design ensure exceptionally quiet operation, especially at 48RPM.

InstantOn™

Collision hazards won’t wait for your radar to start up – why should you? Halo Radar’s solid-state technology is ready instantly from standby, and in just 16-25 seconds from power-on to fully-operational. Avoid the 2-3 minute warm-up time associated with traditional pulse radar, and trust Halo Radar to produce an immediate, accurate radar image when you need it.

High Reliability

Halo Radar is built to last, with its solid-state transceiver meaning no magnetron to replace, and no manual tuning required as the magnetron heats up or ages. Similarly, a solid-state brushless motor driver means no motor brushes to wear out and replace. Be confident that Halo Radar will operate at high speed in winds up to 70 knots, year after year.

Low Electromagnetic Emissions

  • Unlike traditional pulse radar, Halo Radar’s low-power pulsed transmissions meet upcoming Low Emission standards. This makes Halo Radar safe to run in anchorages and marinas, providing enhanced radar coverage at the very start and end of each journey.

Low Power Consumption

Halo Radar uses 40W average with no wind, and no more than 200W at maximum wind velocity. Experience even greater power savings in standby with just 7W power usage, versus 10/15W for pulse radar. With its low power consumption and support for 12/24 volt DC systems, Halo Radar is ideal for small to mid-sized powerboats.

Ethernet Connectivity

  • Simrad Halo Pulse Compression Radar connects to any Simrad NSS or NSO multifunction display system via Ethernet, with a bulkhead-mounted interface box below deck. Antenna installation is simple and elegant, with the same thin cable and small-diameter connectors as our 3G/4G Broadband radars.

Uncompromising Aesthetics

  • Bringing the range and reliability of Halo Pulse Compression Radar to your boat doesn’t mean compromising on aesthetics. Halo Radar’s sleek open-array antenna sits atop a uniquely curved pedestal, a departure from traditional boxy and utilitarian radar designs. Display your Halo Radar on the water with soft-glow, dual-beam Blue LED accent lighting, integrated into the pedestal and customizable with 4-level brightness control.

* Halo™ Pulse Compression Radar’s blue 4 level static accent pedestal lighting may not be approved for use in your boating location. Please check your local boating regulations before turning the blue accent lights ON.

Description25 W Halo® Pulse Compression Radar System. System consists of radar pedestal, antenna, 20 m (65 ft)Interconnection cable and RI-12 Interface Module.
Type of emissionFCC/IC/R&TTE Type Certification. FCC ID: RAYHALO. IC ID: 4697A-HALO. R&TTE: Emissions compliant to SM1541-4 (including -40 dB/dec future design objectives)

Environmental

Operating Temperature-25°C to +55°C (-13°F – 131°F)
Relative humidityIEC60945 Exposed product
Shock and VibrationIEC60945 Exposed product and 20G, 100,000 cycle
UVIEC60945 Exposed product
WaterproofingIPX6
Relative wind velocity70 knots for 3’, 4’, and 6’ antenna at 48 rpm with RI-12

Power

Power consumption150 W (peak) at maximum wind velocity, 40 W (average) at zero wind velocity, 6.5 W (average) for Scanner + RI-12 in Standby mode
DC inputR-12: (12 OR 24 volt systems) 12 V Systems 10.8 – 15 V DC, 24 V Systems 20 – 31.2 V DC, Pedestal voltage input is 36 V DC nominal generated by RI-12
Power up time16-25 seconds from POWER OFF to TRANSMIT

Physical

Height448 mm (17.64”)
Antenna swing circle diameter3 ft model: 1141 mm (3.5 ft), 4 ft model: 1431 mm (4.5 ft), 6 ft model: 2045 mm (6.5 ft)

Component weights

Pedestal18.75 Kg (41.3lb)
Antenna 3 ft4.1 Kg (9.0 lb
Antenna 4 ft4.9 Kg (10.8 lb)
Antenna 6 ft6.5 Kg (14.3 lb)
RI-121.6 Kg ( 3.5 lb)
10 m (33 ft) Cable1.1 Kg (2.4 lb)
20 m (66 ft) Cable2.3 Kg (5.0 lb)
30 m (100 ft) Cable3.4 Kg (7.5 lb)

Antenna

Instrumented range3 ft model:48 nm, 4 ft model:64 nm, 6 ft model:72 nm
TransmitterSolid state module with no long term transmitter power degradation
RotationApprox. 24 to 48 rpm (Min 20 rpm at Max 70 kts). Software controlled in modes
Beam width3 ft: 2.4°+/-10% (-3 dB width) – 1.7 deg with Beam sharpening mode ON,4 ft: 1.8°+/-10% (-3 dB width) – 1.3 deg with Beam sharpening mode ON,6 ft 1.2°+/-10% (-3 dB

width) – 0.8 deg with Beam sharpening mode ON

Beam width Vertical25° +/-20 % (-3 dB width)
Plane of polarizationHorizontal Polarization
Sidelobe level 3 ftBelow -23 dB max. (within ±10°): Below –30 dB max. (outside ±10°)
Side lobe level 4 ftBelow -23 dB max. (within ±10°):Below –30dB max. (outside ±10°)
Side lobe level 6 ftBelow -23 dB max. (within ±10°): Below –30 dB max. (outside ±10°)
Transmitter frequencySynthesized – Upper half of X-Band 9.410 – 9.495 GHz
Peak power output25 W ± 10% under any transmit condition – up to 10% duty cycle max
Pulse length/PRF and Compression ratioPulse length: 0.04 usec: Chirp length:2-96 usec: Chirp Bandwidth: 2-32 MHz: Up to 1 pulse and 5 chirps in a burst with burst repetition rate of 500-2000. Range and mode dependent. Effective Pulse Compression Ratio less than 150 in all modes.
SART/RACON TriggeringYes – trigger distance: about 1nm max – weather, sea state, and SART position dependent
DuplexerCirculator and isolator
MixerMIC front-end
IF sectionCenter frequency: 28.625 MHz: Bandwidth: 40 MHz max.* A/D; 16 bit 115 MSPS *Narrower bandwidths defined by signal processing
Noise figure5 dB (Average) at front-end input.

Other

Communications PortsEthernet 10/100 Base-T for radar data and control, Micro-C male / NMEA2000 via RI-12
NMEA2000 PGNS USED127250 – Vessel Heading, 127251 – Rate of Turn, 129025 – Position, Rapid Update, 129026 – COG & SOG, Rapid Update, 129029 – GNSS Position Data, 130818 -Proprietary
NMEA-0183Input via RI-12: Sentenses used by the radar application. HDG, HDT, HDM, GGA, GLL, RMC, VTG.:Baud rate: Auto sense 4800, 9600, 19200 or 38400
Antenna parkyes
Remote power onyes
MotorBrushless with solid state commutation with electromagnetic braking for parking.
Inter-connecting cableUses the same cable as the 3G/4G radars. Available in: 10 m (33 ft), 20 m (66 ft), 30 m (100 ft) lengths. Ships with (20 m (66 ft) Max length 30 m (100 ft). Options for cable to exit from rear of pedestal or pole mount