Furuno 1623 - Manual (Page 40)

SP - 1 E3510S01F
SPECIFICATIONS OF MARINE RADAR
MODEL 1623
1 GENERAL
1.1 Indication System
PPI Daylight display, raster scan, 4 tones in monochrome
1.2 Range, 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
2.3 Antenna 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
3.5 Intermediate 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