This product has been discontinued by Simrad and is no longer available to buy.
Simrad
Simrad Halo 4 Pulse Compression Radar
Description
The Simrad Halo 4 is a complete open array pulse compression radar system pairing a solid-state 25 W pedestal with a 4 ft antenna and the RI-12 interface module. The longer 4 ft array narrows the horizontal beam to 1.8 degrees (sharpening to 1.3 degrees) for excellent target separation, and extends instrumented range to 64 nautical miles.
With no magnetron the system is ready to transmit in 16 to 25 seconds from power-on and suffers no long-term transmitter degradation, while low-power pulsed transmissions keep it safe to operate in harbours and marinas. Antenna rotation is software-controlled at approximately 24 to 48 rpm, and the supplied RI-12 module feeds NMEA 2000 and NMEA 0183 navigation data into the radar. Built to IEC60945 with IPX6 weatherproofing, the Halo 4 connects over Ethernet to compatible Simrad displays.
PRODUCT DETAILS
- 25 W solid-state open array pulse compression radar system
- 4 ft antenna with a 1.8 deg horizontal beam (1.3 deg with beam sharpening)
- Instrumented range up to 64 nm
- No magnetron, ready to transmit in 16-25 seconds from power-on
- Software-controlled rotation, approximately 24 to 48 rpm
- Includes the RI-12 interface for NMEA 2000 and NMEA 0183 data
- Built to IEC60945 with IPX6 weatherproofing
- Low-power pulsed transmissions safe for harbour and marina use
- HALO solid-state radar pedestal
- 4 ft open array antenna
- RI-12 radar interface module
- Interconnection cable
- Documentation pack
No exploded diagram available for this product.
No compatible transducers listed for this product.
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Range & Performance
| Radar type | Solid-state open array pulse compression radar |
| Antenna size | 4 ft |
| Instrumented range | 64 nm |
| Rotation | Approx. 24 to 48 rpm (min 20 rpm at max 70 kts), software controlled |
| Transmitter source | Solid-state module, no long-term power degradation |
| Power up time | 16-25 seconds from power off to transmit |
RF & Antenna
| Transmitter frequency | Synthesized, upper half of X-band 9.410 - 9.495 GHz |
| Peak power output | 25 W +/-10% (up to 10% duty cycle max) |
| Horizontal beam width | 1.8 deg +/-10% (-3 dB); 1.3 deg with beam sharpening |
| Vertical beam width | 25 deg +/-20% (-3 dB) |
| Plane of polarization | Horizontal |
| Pulse / chirp | Pulse 0.04 usec; chirp 2-96 usec, chirp bandwidth 2-32 MHz |
Electrical
| DC input | 12 or 24 V DC into the RI-12 (12 V: 10.8-15 V; 24 V: 20-31.2 V); pedestal 36 V DC from RI-12 |
| Power consumption | 180 W peak at max wind; 40 W average at zero wind; 6.5 W scanner + RI-12 in standby |
Physical
| Antenna swing circle diameter | 1431 mm (4.5 ft) |
| Height (with antenna) | 427 mm (16.81") |
| Component weights | Pedestal 18.75 kg, 4 ft antenna 4.9 kg, RI-12 1.6 kg |
Environment
| Operating temperature | -25 to +55 C (-13 to 131 F) |
| Waterproof rating | IPX6 |
| Relative wind velocity | 70 knots at 48 rpm with RI-12 |
Connectivity
| Communications | Ethernet 10/100 Base-T; NMEA 2000 and NMEA 0183 via RI-12 |
