Furuno 1823C - Page 246

SP - 2 E3503S02H-M
2.3.1 Radiator Slotted waveguide array
2.3.2 Polarization Horizontal
2.3.3 Antenna Rotation 24 or 48 rpm nominal
High brilliance monitor: 24 rpm nominal only
2.3.4 Radiator Length 100 cm (XN10)
2.3.5 Horizontal Beamwidth 2.4°
2.3.6 Vertical Beamwidth 27°
2.3.7 Sidelobe Attenuation -20 dB or less (within ±20° of main-lobe)
-28 dB or less (±20° of main-lobe or more)
2.4 MODEL1943C:
2.4.1 Radiator Slotted waveguide array
2.4.2 Polarization Horizontal
2.4.3 Antenna Rotation 24 or 48 rpm nominal
High brilliance monitor: 24 rpm nominal only
2.4.4 Radiator Length 120 cm (XN12)
2.4.5 Horizontal Beamwidth 1.9°
2.4.6 Vertical Beamwidth 22°
2.4.7 Sidelobe Attenuation -24 dB or less (within ±20° of main-lobe)
-30 dB or less (±20° of main-lobe or more)
2.5 MODEL1953C:
2.5.1 Radiator Slotted waveguide array
2.5.2 Polarization Horizontal
2.5.3 Antenna Rotation 24 or 48 rpm nominal
2.5.4 Radiator Length 120 cm (XN12), 180 cm (XN13, 24rpm only)
2.5.5 Horizontal Beamwidth 1.9° (XN12), 1.2° (XN13)
2.5.6 Vertical Beamwidth 22°
2.5.7 Sidelobe Attenuation
XN12: -24 dB or less (within ±20° of main-lobe)
-30 dB or less (±20° of main-lobe or more)
XN13: -24 dB or less (within ±10° of main-lobe)
-30 dB or less (±10° of main-lobe or more)
3 TRANSCEIVER MODULE
3.1 Frequency and Modulation 9410 MHz ±30MHz (X band), P0N
3.2 Peak Output Power M1823C: 2.2 kW nominal,
M1833C/1933C: 4 kW nominal,
M1943C: 6 kW nominal, M1953C: 12 kW nominal
3.3 Modulator FET Switching Method
3.4 Intermediate Frequency 60 MHz