Furuno 1623 manual Specifications of Marine Radar

SPECIFICATIONS OF MARINE RADAR

MODEL 1623

1	GENERAL
1.1	Indication System	PPI Daylight display, raster scan, 4 tones in monochrome

1.2Range, Pulselength (PL) & Pulse Repetition Rate (PRR)

		Range (nm)	0.125, 0.25, 0.5, 0.75	1, 1.5, 2	3, 4, 6, 8, 12, 16
		Pulse Length	0.08 μs (short)	0.3 μs (medium)	0.8 μs (long)
		Pulse Repetition Rate	3000 Hz nominal	1200 Hz nominal	600 Hz nominal
1.3		Range Resolution	16 m
1.4		Bearing Discrimination	6.7°
1.5		Minimum Range	22 m
1.6		Bearing Accuracy	Within 1°
1.7		Range Ring Accuracy	1.0 % of range or 8 m, whichever is the greater
2	SCANNER UNIT
2.1		Radiator	Micro-strip
2.2		Polarization	Horizontal

2.3Antenna Rotation Speed 24/31/41 rpm nominal (auto-select according to range)

2.4	Radiator Length	34 cm
2.5	Horizontal Beamwidth	Less than 6.2°
2.6	Vertical Beamwidth	25°
2.7	Sidelobe Attenuation	Less than -20 dB
3	TRANSCEIVER MODULE
3.1	Frequency	9410 MHz ±30MHz (X band)
3.2	Modulation	P0N
3.3	Peak Output Power	2.2 kW
3.4	Modulator	FET Switching Method

3.5Intermediate Frequency 60 MHz

3.6	Tuning	Automatic
3.7	Receiver Front End	MIC (Microwave IC)
3.8	Bandwidth	15 MHz (short pulse), 5 MHz (medium/long pulse)
3.9	Duplexer	Circulator with diode limiter
3.10	Time of Heat-up	1-min. approx.
4	DISPLAY UNIT
4.1	Picture Tube	6” rectangular monochrome LCD
4.2	Display Pixels	240(H) x 320(V) dots,
		Effective radar display area: 240x240 dots

SP - 1 E3510S01F