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Specifications
ANTENNA RADIATORS
1. Type
Slotted waveguide array
2. Beamwidth and sidelobe attenuation
dnaBdnab-Xdnab-S
rotaidaR
epyt
NXFA21
3NX
FA02NX
NX(3)A
NXFA42
)A4NX(
A5NX
NS63FA
FA03NS
htdiwmaeB
).roH(
.18°
32.1 ° 32.1 °
.095°
57.0 ° 1.2 ° 5.2 °
htdiwmaeB
).reV(
20° 25°
02 ° 02 ° 02 ° 52 ° 52 °
ttaebolediS
nihtiw ± 01 °
28 Bd24Bd
Bd82
28 bd
bd62Bd52bd42
ttaebolediS
edistuo ± 01 °
32 Bd30Bd
Bd23
32 Bd
bd03Bd03bd03
NSrotaidartf01*03-NONrofelbaliavaFASALOSsiCSHS5382-RAF(.pihs
).pihsSALOSrofelbaliava
3. Polarization
Horizontal
4. Rotation
FR/FAR-2815/2825: 24/42 rpm
FR/FAR-2825W2855W,
FR/FAR-2835SW/2865SW: 21 rpm (50 Hz),
26 rpm (60 Hz)
FR/FAR-2835S: 21 rpm (50 Hz),
26 rpm (60 Hz),
45 rpm (for HSC)
FR/FAR-2855: 16 rpm (50 Hz),
20 rpm (60 Hz or DC)
RF TRANSCEIVER
1. Frequency
X-band: 9410 MHz ±30 MHz
9415 MHz ±30 MHz(50kW)
S-band: 3050 MHz ±30 MHz
2. Output power
FR/FAR-2815: 12 kW
FR/FAR-2825/2825W: 25 kW
FR/FAR-2855-I/2855W: 50 kW
FR/FAR-2835S-I/2835SW: 30 kW
FR/FAR-2865SW: 60 kW
3. Pulselength/PRF
FR/FAR-2815/2825
Range(nm) Pulselength (µs) PRR (Hz)
0.125, 0.25 0.07 2200
0.5, 0.75 0.07/0.15 2200
1.5 Two from 0.07, 0.15, 0.3 2200/1000
3 Two from 0.15, 0.3, 0.5 2200/1000
6 Two from 0.3, 0.5, 1.2 1000/600
12, 24 Two from 0.5, 1.2 1000/600
48, 96 1.2 600 (48
nm)/500
(96 nm)
FR/FAR-2825W, 2855, 2855W, 2835S,
2835SW, 2865SW:
Range (nm) Pulselength (µs) PRR (Hz)
0.125, 0.25, 0.5 0.08 2200
0.75, 1.5 0.08/0.3* 2200
3 Two from 0.08, 0.3*, 0.6 2200/1100
6 Two from 0.08, 0.3*, 0.6 2200/1100
12, 24 0.6, 1.2 1000/600
48, 96 1.2 600/500
*: In case of FR-2855, FR-2855W, FR-2865SW
0.3 is replaced with 0.2.0
4. I.F.
60 MHz, Logarithmic
S1-M1: 28 MHz
M2-Lpulse: 3 MHz
5. Duplexer
Ferrite circulator with diode limiter for
FR/FAR-2815/2825/2835S/2835sw
Ferrite circulator with TR limiter for FR-
2825W/2855/2855W/2865SW
6. Noise figure
FR/FAR-2815/2825/2825W/2855/2855W/
2835S: 6 dB
FR/FAR-2835SW: 4 dB
FR/FAR-2865SW: 4.5 dB
RADAR DISPLAY
1. Picture tube
28" color CRT, Effective radar diameter 360
mm
IMO type: Yellow or green echoes in 16 levels
R-type: Yellow or green echoes in 16 levels or
3 colors depending on echo strengths
Different color for VRM, range rings, alarms,
etc.
Raster scan at 32.25 kHz horizontal, 60 Hz
vertical. Number of scanning lines 1024,
interlaced.
2. Minimum range and discription
35 m
3. Range scales (nm)
IMO type:
0.125 (.025), 0.25 (0.05), 0.5 (0.1), 0.75
(0.25), 1.5 (0.25), 3 (0.5), 6 (1), 12 (2), 24 (4),
48 (8), 96 (16)
R-type:
0.125 (.025), 0.25 (0.05), 0.5 (0.1), 0.75
(0.25), 1.5 (0.25), 3 (0.5), 6 (1), 12 (2), 16 (4),
24 (4), 32 (8), 48 (8), 72 (16), 120 (20)
4. Range accuracy
1% of range in use or 15 m whichever is the
greater