Garmin GMR 20 - Manual (Page 24)

20 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: 1°
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