Garmin International Inc 01393 Manuale Utente

Appendix

GPS: 

< 33 ft. (10 m) 95%

DGPS:  10–16 ft. (3–5 m) 95% typical (WAAS 

accuracy in North America)

Velocity:  0.164 ft./sec. (0.05 m/sec) steady state

Compass:  Accuracy (when calibrated); +/- 2 degrees, 

resolution; 1 degree

Altimeter: Accuracy (when calibrated); ± 10 ft. (3 m), 

Resolution; 1 ft. (0.3 m) 

Range; from -2,000 ft. to 30,000 ft. (from 

-610 to 9144 m)

Interfaces: USB for computer interface
Data Storage Life: Indefinite; no memory battery 

required

Map Storage:  microSD card capacity (a small portion of 

the card capacity is used for formatting)

Source: 

Astro 220:  Two 1.5 volt AA batteries, 

vehicle power adapter, USB Data Cable 

 

DC 30: Internal rechargeable lithium-ion 

battery, Vehicle Power Adapter, AC charger 

Battery Life: Astro 220: Up to 24 hours (Typical use 

- Alkaline batteries lose capacity as 

temperature decreases. Use batteries when 

operating in below-freezing conditions.)

 

DC 30: 17 to 36 hours. Recharge 4½ hours.

151.82 MHz 

151.88 MHz 

151.94 MHz 

154.57 MHz 

154.60 MHz

Range: Up to 5 miles (8 km) - line of sight
Output power: DC 30: 2 watts