GDL 30/30A Owner’s Manual 29GDL 30/30A SpecificationsPhysicalSize: 6.75" L x 4.75" W x 2.00" H (17.2cm x 12.1cm x 5.1cm)Weight: 1.5 lbs. (.680Kg)Case: Fully gasketed, high-impact plastic and aluminum alloy,waterproof to IEC 60529 IPX7Temp Range: 5°F to 158°F (-15°C to 70°C)PowerSource: 10-35 VdcUsage: 18 watts maxFuse: AGC/3AG - 2.0 AmpData OutputSource: Proprietary Garmin data format.AudioOutput Level: 300mV rms into 47 kohmFrequency Response: 10-20,000 Hz, ± 1 dBHarmonic Distortion: <0.5%GA 31 Antenna SpecificationsPhysicalSize: 3.58"D x 4.25"H (91mm x 108 mm)Weight: 1.0 lbs. (0.373 kg)Operating Range: -40°F to +176°F (-40°C to +80°C)Waterproof: -1 meter submersion for 30 minutes IEC 60529 IPX7Mount Thread Size: 1" diameter at 14 threads/inchCable: Foil-shielded center conductor 18 AWGDynamics: 999 knots, 40gNOTE: When using the Chartplotter and GDL 30/30A on battery poweronly (engines off) for extended periods of time, be sure there is enoughavailable amperage to run the units for the time period. Running otheronboard devices at the same time may lower the available amperage,causing the Chartplotter and/or GDL 30/30A to shut off. Check withyour local marine dealer/installer if problems persist.APPENDIX > SPECIFICATIONS