Specifications - Furuno 1835 Operator's Manual

FURUNO
SPECIFICATIONS OF MARINE RADAR
1 GENERAL
1.1 Range scale, pulselength (PL) and Pulse repetition rate (PRR)
MODEL 1835
Range scale
(NM)
0.0625 to 1.6
1.5 to 3.2
3 to 36
Range scale
(NM)
0.0625 to 1.6
1.5 to 3.2
3 to 64
1.2 Range discrimination
1.3 Minimum range
1.4 Bearing resolution
1.5 Bearing accuracy
1.6 Range ring accuracy
2 ANTENNA UNIT
2.1 Radiator type
2.2 Radiator length
2.3 Horizontal beamwidth
2.4 Vertical beamwidth
2.5 Sidelobe
2.6 Polarization
2.7 Antenna rotation speed MODEL 1835: 24 rpm, MODEL 1935/1945: 24 rpm/48 rpm
2.8 Wind resistance
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MODEL 1835/1935/1945
PRR
PL (μs)
(Hz approx.)
0.08 2100
0.3 1200
0.8 600
MODEL 1945
PRR
PL (μs)
(Hz approx.)
0.08 2100
0.3 1200
0.8 600
25 m
25 m
MODEL 1835: 4°, MODEL 1935: 2.4°, MODEL 1945: 1.9°
±1°
0.9％ of range in use or 8 m, whichever is greater
MODEL 1835: Printed array,
MODEL 1935/1945: Slotted waveguide array
MODEL 1835: 60 cm, MODEL 1935: 100 cm,
MODEL 1945: 120 cm
MODEL 1835: 4.0°, MODEL 1935: 2.4°, MODEL 1945: 1.9°
MODEL 1835: 20°, MODEL 1935/1945: 22°
MODEL 1835: Within ±20° of main lobe: -18dB
Outside ±20° of main lobe: -23dB
MODEL 1935: Within ±20° of main lobe: -20dB
Outside ±20° of main lobe: -28dB
MODEL 1945: Within ±20° of main lobe: -24dB
Outside ±20° of main lobe: -30dB
Horizontal
MODEL 1935/1945: Relative wind speed 100 kn for 24 rpm/
SP - 1
MODEL 1835/1935/1945
MODEL 1935
Range scale
PL (μs)
(NM)
0.0625 to 1.6 0.08
1.5 to 3.2
3 to 48
70 kn for 48 rpm
PRR
(Hz approx.)
2100
0.3 1200
0.8 600
E3579S01B-M