Garmin gmr 20 Manuale Utente

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  GMR 20/40 Owner’s Manual
Specifications
Unit Dimensions:  28” (710 mm) D x  8” (205 mm) H.
Radar Scanner Weight:  Unit 26 lbs; cable 8.35 lbs.
Range Scales (Range Rings):  GMR 40 — 1/8 nm (1/32 nm) to 36 
nm (9 nm)  GMR 20 — 1/8 nm (1/32 nm) to 24 nm (6 nm).
Power Output:  GMR 20: 2 kW / GMR 40: 4kW.
Power Input Source:  10-35 v D.C.  28W.
Operating Temperature Range:  -25°C to 70°C, and a relative 
humidity up to 95% at 35°C.
Beamwidth:  Horizontal beamwidth of 3.6° nominal / Vertical 
beamwidth of 25° nominal.
Range: GMR 20:  24 nm / GMR 40: 36 nm.
Wind Velocity:  Wind speed up to 100 Kts.
Antenna RPMs:  24 rpm.
Range Ring Accuracy:  +/- 1 meter.
Bearing Accuracy:  
Minimum Range:  35 meters
Range Discrimination:  30 meters
Sensitivity and Tune Controls:  Gain, Sea Clutter, Rain Clutter, 
Frequency Tune.
Radar/Chart Synchronization:  Overlay Mode. Split overlay with 
standard radar presentation.
Off Center Function:  Look ahead, Auto Shift, and Manual.
RF Transmit Frequency:  9410 ± 30 MHz
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PECIFICATIONS