Furuno 1942 MARK-2 manual Specifications of Marine Radar

SPECIFICATIONS OF MARINE RADAR

MODEL 1932/1942 MARK-2

1. GENERAL

(1)

Indication System

PPI Daylight display, raster scan, 8 tones in monochrome

(2)

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

Range (nautical miles)

PL

PRR

0.125

0.25

0.5

0.75

1

1.5

2

3

4

6

8

12

16

24

36

48

64

SP

2100 Hz

0.08 ￿s

MP

1200 Hz

0.3 ￿s

LP

600 Hz*

0.8 ￿s

*550 Hz on 48 nm range or more

Maximum Range;

MODEL 1932 M2: 48 nm, MODEL 1942 M2: 64 nm

(3)

Range Resolution

20 m

(4)

Bearing Discrimination

1.9º

(5)

Minimum Range

25 m (0.25 NM range)

(6)

Bearing Accuracy

Within 1º

(7)

Bearing Resolution

4º

(8)

Range Ring Accuracy

0.9 % of range or 8 m, whichever is the greater

2. SCANNER UNIT

(1)

Radiator

Slotted waveguide array

(2)

Polarization

Horizontal

(3)

Antenna Rotation Speed

24 rpm or 48 rpm nominal

(4)

Radiator Length

M1932M2: 100 cm (XN10A), M1942M2: 120 cm (XN12A)

(5)

Horizontal Beamwidth

M1932M2: 2.4°, M1942M2: 1.9°

(6)

Vertical Beamwidth

M1932M2: 27°, M1942M2: 22°

(7)

Sidelobe Attenuation

Within ±20° of main-lobe: less than -24 dB

Outside ±20° of main-lobe: less than -30 dB

3. TRANSCEIVER MODULE

(1)

Frequency

9410 MHz ±30MHz (X band)

(2)

Modulation

P0N

(3)

Peak Output Power

M1932M2: 4 kW nominal, M1942M2: 6 kW nominal

(4)

Modulator

FET Switching Method

(5)

Intermediate Frequency

60 MHz

(6)

Tuning

Automatic or manual

(7)

Receiver Front End

MIC (Microwave IC)

SP - 1