SP - 1
SPECIFICATIONS OF MARINE RADAR
FR-2125V
1. ANTENNA RADIATORS
(1) Type
Slotted waveguide array
(2) Radiator length
6.5 ft (XN20AF), 8 ft (XN24AF)
(3) Horizontal Beamwidth
1.23º (XN20AF), 0.95º (XN24AF)
(4) Vertical
Beamwidth
20º
(5) Side-lobe Attenuation
-28 dB or less (within ±1º of main-lobe)
-32 dB or less (±1º of main-lobe or more)
(6) Polarization
Horizontal
(7) Rotation
24 rpm or 42 rpm (option)
2. RF TRANSCEIVER
(1) Frequency
9410 MHz ±30 MHz
(2) Output Power
25 kW
(3) Range, Pulselength (PL) & Pulse Repetition Rate (PRR)
Range (statute mile)
PL PRR(Hz) 0.125 0.25 0.5 0.75 1 1.5 2 3 4 6 8 12 16 24 32 48 96
3000 0.07
µ
s
SP
3000
0.15
µ
s
1500
0.3
µ
s
1000
0.5
µ
s
MP
1000
0.7
µ
s
LP
500
1.2
µ
s
(4) IF Amplifier
60 MHz, Logarithmic
(5) Duplexer
Ferrite circulator with diode limiter
(6) Noise Figure
6 dB
(7) Spurious Response
-40 dB
3. RADAR DISPLAY
(1) Picture Tube
21” color CRT, Effective radar dia. 275 mm
Yellow or green echoes in 16 levels or 16 colors
Different color for VRM, range rings, alarms etc.
(2) Scanning
Raster scan at scanning frequency 61.44 kHz horizontal, 60 kHz vertical.
Number of scanning lines 1024, non-interlaced.
(3) Minimum Range
25 m