Furuno manual Specifications of Marine Radar, Model 1833/1933/1943

SPECIFICATIONS OF MARINE RADAR

MODEL 1833/1933/1943

1	GENERAL
1.1	Indication System			PPI Daylight display, raster scan, monochrome CRT
1.2	Range, Pulse length (PL) & Pulse Repetition Rate (PRR)
		Range (nm)	Pulse length (μs)		PRR (Hz approx.)
		0.125 to 1.5		0.08	2100
		1.5 to 3		0.3	1200
		3 to 64*		0.8	600
	*Maximum Range: M1833: 36nm, M1933: 48nm, M1943: 64nm
1.3	Range Resolution			20 m
1.4	Bearing Resolution			M1833: 4.0°, M1933: 2.4°, M1943: 1.9°
1.5	Minimum Range			27 m
1.6	Bearing Accuracy			±1°
1.7	Range Ring Accuracy			0.9 % of range or 8 m, whichever is the greater

2 SCANNER UNIT

2.1MODEL1833:

2.1.1	Radiator	Printed waveguide array
2.1.2	Polarization	Horizontal
2.1.3	Antenna Rotation	24 rpm nominal
2.1.4	Radiator Length	60 cm
2.1.5	Horizontal Beamwidth	3.9°
2.1.6	Vertical Beamwidth	20°
2.1.7	Sidelobe Attenuation	-18 dB or less (within ±20° of main-lobe)
		-23 dB or less (±20° of main-lobe or more)

2.2MODEL1933:

2.2.1	Radiator	Slotted waveguide array
2.2.2	Polarization	Horizontal
2.2.3	Antenna Rotation	24 or 48 rpm nominal
2.2.4	Radiator Length	100 cm (XN10)
2.2.5	Horizontal Beamwidth	2.4°
2.2.6	Vertical Beamwidth	27°
2.2.7	Sidelobe Attenuation	-20 dB or less (within ±20° of main-lobe)
		-28 dB or less (±20° of main-lobe or more)

2.3MODEL1943:

2.3.1	Radiator	Slotted waveguide array
2.3.2	Polarization	Horizontal
		SP - 1	E3502S01D