HALO20 Radar - A cost-effective compact 20'' Radar dome. 24nm range and 24RPM. The perfect radar solution for budget-conscious boaters with small sportfishing vessels and dayboats. Compliance CE, FCC (ID:RAYHALO20), IC: 978B-HALO20 Environmental IEC60945 : 2002 Operating Temperature -25° to +55°C (-13° to +130°F) Relative humidity +35° C (95° F), 95% RH Waterproof IPX6 Max relative wind velocity 51 m/sec (100 Knots) Power & Dimensions Power consumption (with 10m cable) Operating: 17.to 20W at 13.8 V Standby 3.9 W (Typ.) at 13.8 V DC ~ 170 mA DC input (at radar end of cable) 9 V to 31.2 V DC (12/24 V systems) Reverse polarity protection Yes Minimum startup voltage 10.75 V DC Transmitter source (pre-heating time) No magnetron – Instant On Outside dimensions Ø Diameter 510 mm (20”), Height 223 mm (8.8”) Scanner weight (no cable) 5.9kg (13 lbs) Radar and Antenna parameters Radar ranges 100 m (328 ft) to 24nm with 17 range settings, (nm/sm/km) Rotation (mode dependent) 20-24rpm Transmitter frequency X-band - 9.4 to 9.5 GHz Transmitter source (warm-up time) No Magnetron – all solid state. Instant On™ Plane of polarization Horizontal Polarization Transmitter peak power output 6W Minimum range 6 m (19.7 ft) Sweep repetition frequency 700-2400 Hz (mode dependent) Pulse length 0.04 - 64 usec Sweep bandwidth 48 MHz max Horizontal beam width (Tx and Rx antenna) 4.9° nominal (-3 dB width) Target Seperation Control Not available Vertical beam width (Tx and Rx antenna) 25° (-3B width nominal) Side lobe level (Tx and Rx antenna) Below -18 dB (within ±10°);Below -24 dB (outside ±10°) Noise figure Less than 5 dB nominal Communications/Cabling Protocol Ethernet 100 Base T Maximum inter connecting cable length 30 m (98.5 ft) – available as option, use NEP-2 for longer cable runs