Furuno 1942 MARK-2 User Manual
Page 45

SP - 1
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
Ps
MP
1200
Hz
0.3
Ps
LP 600
Hz
*
0.8
Ps
*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
1.9
º
(5) Minimum Range
25 m (0.25 NM range)
(6) Bearing Accuracy
Within 1
º
(7) Bearing Resolution
4
º
(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)