Furuno 1834C-BB, GD-1920C-BB manual Specifications of Marine Radar, Model 18x4C-BB/19x4C-BB Series

SPECIFICATIONS OF MARINE RADAR

MODEL 18x4C-BB/19x4C-BB SERIES

1 GENERAL

1.1 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: M1824C-BB: 24nm, M1834C-BB: 36nm, M1934C-BB: 48nm,

M1944C-BB: 64nm, M1954C-BB/1964C-BB: 72nm

1.2	Range Resolution	M1824C-BB: 10 m, Others: 15 m
1.3	Bearing Resolution	M1824C-BB: 5.5°, M1834C-BB: 4.0°, M1934C-BB: 2.4°,
		M1944C-BB: 1.9°, M1954C-BB/1964C-BB:
		1.9° (XN12A), 1.2° (XN13A)
1.4	Minimum Range	M1824C-BB: 27 m, Others: 42 m
1.5	Bearing Accuracy	±1°
1.6	Range Ring Accuracy	0.9% of range or 8 m, whichever is the greater

1.7Range, Range Ring Interval (RI), Number of Rings

Range (nm)	0.125	0.25	0.5	0.75	1	1.5	2	3	4	6	8	12	16	24	36	48	64	72
RI (nm)	0.0625	0.125	0.125	0.25	0.25	0.5	0.5	1	1	2	2	3	4	6	12	12	16	18
Rings	2	2	5	4	5	4	5	4	4	5	5	5	5	5	4	5	5	5

Maximum range: M1824C-BB: 24nm, M1834C-BB: 36nm, M1934C-BB: 48nm, M1944C-BB: 64nm,

M1954C-BB/1964C-BB: 72nm

2 ANTENNA UNIT

2.1MODEL1824C-BB:

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	46 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)

2.2MODEL1834C-BB:

2.2.1	Radiator	Printed waveguide array
2.2.2	Polarization	Horizontal
2.2.3	Antenna Rotation	24 rpm nominal

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