F28Technical Notes and IndexWi-Fi (Wireless LAN)StandardsIEEE 802.11b/g/n (standard wireless LAN protocol)ARIB STD-T66 (standard for low power datacommunication systems)CommunicationsprotocolsIEEE 802.11b: DBPSK/DQPSK/CCKIEEE 802.11g: OFDMIEEE 802.11n: OFDMRange (line of sight) Approx. 30 m (32 yd)Operatingfrequency 2412 - 2462 MHz (1 - 11 channels)Data rates (actualmeasured values)IEEE 802.11b: 5 MbpsIEEE 802.11g: 17 MbpsIEEE 802.11n: 17 MbpsSecurity OPEN/WPA2Access protocols CSMA/CAElectronic compass16 cardinal points (position correction using 3-axisacceleration sensor, automatic correction for thedeviated angle, and automatic offset adjustment)Location data• GPSReceiving frequency: 1575.42 MHzGeodetic system: WGS 84• GLONASSReceiving frequency: 1598.0625 - 1605.3750 MHzGeodetic system: WGS 84Barometer Operating range: Approx. 500 - 1100 hPaAltimeter Operating range: Approx. −300 - +4500 m (−984 -+14,760 ft)Depth gauge Operating range: Approx. 0 - 20 m (0 - 65 ft)Supported languagesArabic, Bengali, Bulgarian, Chinese (Simplified andTraditional), Czech, Danish, Dutch, English, Finnish,French, German, Greek, Hindi, Hungarian, Indonesian,Italian, Japanese, Korean, Marathi, Norwegian, Persian,Polish, Portuguese (European and Brazilian), Romanian,Russian, Serbian, Spanish, Swedish, Tamil, Telugu, Thai,Turkish, Ukrainian, VietnamesePower sources One Rechargeable Li-ion Battery EN-EL12 (included)AC Adapter EH-62F (available separately)Charging time Approx. 2 h 20 min (when using Charging AC AdapterEH-71P and when no charge remains)