Garmin GMR 404/406 Radar Pedestal GMR 404/406 Owner's Manual - Page 20
Appendix, Specifications, 4 ft Open-Array Antenna, Open-Array Scanner
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Appendix > Specifications Appendix Specifications 4 ft Open-Array Antenna Type: End fed slotted waveguide Horizontal Beamwidth: 1.8 degrees Horizontal Sidelobes: -23 dB within ±10 deg of main -30 dB outside ±10 deg of main Vertical Beamwidth: 24 degrees Antenna Gain: 29 dBi Polarization: Horizontal Input Return Loss: Better than -20 dB Weight: 12 lbs (5.4 kg) 6 ft Open-Array Antenna Type: End fed slotted waveguide Horizontal Beamwidth: 1.1 degrees Horizontal Sidelobes: -25 dB within ±10 deg of main -30 dB outside ±10 deg of main Vertical Beamwidth: 24 degrees Antenna Gain: 30 dBi Polarization: Horizontal Input Return Loss: Better than -20 dB Weight: 16 lbs (7.3 kg) 14 Open-Array Scanner Transmit Power: 4 kW Transmitter Frequency: 9410 ±30 MHz Input Voltage: 10.5 - 38 volts DC Typical Input Power: 45 W Input Power (100 kts wind): 130 W maximum Range/Pulse Width/PRF (nm/nsec/Hz): 0.125/65/2304 0.250/65/2304 0.500/80/2304 0.750/200/1152 1.0/250/1152 1.5/500/576 2.0/500/576 3.0/800/576 4.0/800/576 6.0 - 24/1000/576 36 - 72/1000/288 Antenna Rotation: 24 rpm and 48 rpm Maximum Wind Load: 100 kts Receiver Noise Figure: Less than 4 dB Environmental: Temp: -10ºC to +60ºC Humidity: 95% at 35ºC Rel Wind: 100 kts Waterproof to IEC 60529 IPX6 Range: 20 meters minimum, 72 nm max Range Discrimination: 20 meters GMR 404/406 Owner's Manual