Furuno 1823C manual Specifications of Marine Radar Model 1800C/1900C Series

SPECIFICATIONS OF MARINE RADAR

MODEL 1800C/1900C SERIES

1	GENERAL
1.1	Indication System		PPI Daylight display, raster scan, color LCD
1.2	Range, Pulse length (PL) & Pulse Repetition Rate (PRR)
	Range (nm)	Pulse length (∝ s)		PRR (Hz approx.)
	0.125 to 1.5	0.08		2100
	1.5 to 3	0.3		1200
	3 to 72*	0.8		600
*Maximum Range: M1823C: 24nm, M1833C: 36nm, M1933C: 48nm, M1943C: 64nm,
		M1953C: 72nm
1.3	Range Resolution		M1823C: 10 m, Others: 15 m
1.4	Bearing Resolution		M1823C: 5.5°, M1833C: 4.0°, M1933C: 2.4°, M1943C: 1.9°,
			M1953C: 1.9° (XN12A), 1.2° (XN13A)
1.5	Minimum Range		M1823C: 27 m, Others: 42 m
1.6	Bearing Accuracy		±1°
1.7	Range Ring Accuracy		0.9 % of range or 8 m, whichever is the greater

2 ANTENNA UNIT

2.1MODEL1823C:

2.1.1	Radiator	Micro-strip
2.1.2	Polarization	Horizontal
2.1.3	Antenna Rotation	30/24 rpm nominal (for short/long range)
2.1.4	Radiator Length	45 cm
2.1.5	Horizontal Beamwidth	5.2°
2.1.6	Vertical Beamwidth	25°
2.1.7	Sidelobe Attenuation	-19 dB or less (within ±20º of main-lobe)
		-21 dB or less (±20º of main-lobe or more)

2.2MODEL1833C:

2.2.1	Radiator	Printed waveguide array
2.2.2	Polarization	Horizontal
2.2.3	Antenna Rotation	24 rpm nominal
2.2.4	Radiator Length	60 cm
2.2.5	Horizontal Beamwidth	3.9°
2.2.6	Vertical Beamwidth	20°
2.2.7	Sidelobe Attenuation	-18 dB or less (within ±20° of main-lobe)
		-23 dB or less (±20° of main-lobe or more)

2.3MODEL1933C:

SP - 1	E3503S02J-M
	03/09/24