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SPECIFICATIONS OF MARINE RADAR
FR-7062/7112/7252
1. GENERAL
(1) Indication System PPI Daylight display, raster scan, 8 tones in monochrome
(2) Range, Pulselength (PL) & Pulse Repetition Rate (PRR)
(range max. FR-7062: 64 nm, FR-7112: 72 nm, FR-7252: 96 nm)
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 72 96
SP 2100 Hz 0.08 µs
MP 1200 Hz 0.3 µs
LP 600 Hz
*
0.8 µs
*550 Hz on 48 nm to 72 nm range, or 500 Hz on 96 nm range
(3) Range Resolution Better than 20 m
(4) Bearing Discrimination XN12A: within 1.9º, XN13A: within 1.2º
(5) Minimum Range 25 m (0.25 NM range)
(6) Bearing Accuracy Within 1º
(7) 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 nominal: XN12A (100 kt max.), XN13A (100 kt max.)
48 rpm nominal: XN12A (70 kt max.)
(4) Radiator Length XN12A:120 cm, XN13A: 180 cm
(5) Horizontal Beamwidth XN12A: 1.9°, XN13A: 1.2°
(6) Vertical Beamwidth 22°
(7) Sidelobe Attenuation
XN12A: Within ±20° of main-lobe: less than -24 dB
Outside ±20° of main-lobe: less than -30 dB
XN13A: Within ±10° of main-lobe: less than -24 dB
Outside ±10° of main-lobe: less than -30 dB
3. TRANSCEIVER MODULE
(1) Frequency 9410 MHz ±30MHz (X band)
(2) Modulation P0N
(3) Peak Output Power FR-7062: 6 kW, FR-7112: 12 kW, FR-7252: 25 kW
(4) Modulator FET Switching Method