Furuno FAR-2827 Service Manual

Appendix 2) Specifications
AP2-1
1. ANTENNA RADIATORS
1. Type Slotted waveguide array
2. Beam width and sidelobe attenuation
X-band S-band
Radiator type
XN12AF XN20AF XN24AF SN30AF SN36AF
Length 4 ft 6.5 ft 8 ft 10 ft 12 ft
Beam width(H) 1.8° 1.23° 0.95° 2.3° 1.8°
Beam width(V) 20° 20° 20° 25° 25°
Sidelobe within ±10° -24 dB -28dB -28 dB -24 dB -24 dB
Sidelobe outside ±10° -30 dB -32 dB -32 dB -30 dB -30 dB
3. Polarization Horizontal
4. Rotation FAR-2117/2127/2827: 24 rpm or 42 rpm
FAR-2137S/2837S: 21/26 rpm or 45 rpm
FAR-2827W: 24 rpm
FAR-2837SW: 21/26 rpm
2. RF TRANSCEIVER
1. Frequency X-band: 9410 MHz ±30 MHz, S-band: 3050 MHz ±30 MHz
2. Output power FAR-2117/2817: 12 kW FAR-2127/2827/2827W: 25 kW
FAR-2137S/2837S/2837SW: 30 kW
Unwanted emissions comply with ITU-R RR.
3. Pulselength, PL, PRF and range
Pulselength S1 S2 M1 M2 M3 L
PL (µs) 0.07 0.15 0.3 0.5 0.7 1.2
PRF (Hz) 3000* 3000* 1500 1000 1000 600**
Range scale
(nm)
0.125,
0.25, 0.5,
0.75, 1.5
0.5, 0.75,
1.5, 3
0.75, 1.5,
3, 6
3, 6, 12,
24
3, 6, 12,
24
6, 12, 24,
48, 96,
120#
*: 2200 Hz with ARPA on, 32 nm range
**: 450 Hz on 96 and 120 nm ranges #: Non-IMO type only
4. IF 60 MHz
5. Noise figure 6 dB (typical)
6. Duplexer Ferrite circulator with diode limiter for
FAR-2117/2127/2137S/2817/2827/2837S
Ferrite circulator with TR limiter for FAR-2827W/2837SW
Appendix 2)
Appendix 2) Appendix 2)
Appendix 2) Specifications
SpecificationsSpecifications
Specifications

Furuno FAR-2827 Specifications

General

Brand	Furuno
Model	FAR-2827
Category	Marine Radar
Language	English