Appendix; Specifications; Ft Open-Array Antenna; Open-Array Scanner - Garmin GMR 404 Owner's Manual

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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)
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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
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
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
GMR 404/406 Owner's Manual