Create a PTT channelTo create a channel, select Options > New channel >Create new.To register the channel to the PTT service, selectOptions > Register.To join a channel, select the channel you want to talk to,and press the voice key.To invite a user to a channel, select Options > Sendinvitation.To view the currently active users of a channel, selectOptions > Active members.To view more information about a selected user, selectOptions > Contact details.When you log in to PTT, you are automatically connectedto the channels that were active when the application waslast closed.Exit PTTTo exit PTT, select Options > Exit. Select Yes to log outand close the service. Select No if you want to keep theapplication active in the background.About GPS and satellitesignalsThe Global Positioning System (GPS) is a worldwide radionavigation system that includes 24 satellites and theirground stations that monitor the operation of thesatellites. To use GPS, you need a compatible GPS receiver.Use Bluetooth connectivity to connect to the GPS receiver.To start using a compatible GPS receiver with Bluetoothconnectivity, select Connectivity > Bluetooth.A GPS terminal receives low-power radio signals from thesatellites and measures the travel time of the signals. Fromthe travel time, the GPS receiver can calculate its locationto the accuracy of metres.The coordinates in the GPS are expressed in degrees anddecimal degrees format using the international WGS-84coordinate system.The Global Positioning System (GPS) is operated by thegovernment of the United States, which is solelyresponsible for its accuracy and maintenance. Theaccuracy of location data can be affected by adjustmentsto GPS satellites made by the United States governmentand is subject to change with the United StatesDepartment of Defense civil GPS policy and the FederalRadionavigation Plan. Accuracy can also be affected bypoor satellite geometry. Availability and quality of GPSsignals may be affected by your location, buildings,natural obstacles, and weather conditions. The GPSreceiver should only be used outdoors to allow receptionof GPS signals.Any GPS should not be used for precise locationmeasurement, and you should never rely solely on locationdata from the GPS receiver and cellular radio networks forpositioning or navigation.To enable or disable different positioning methods, suchas Bluetooth GPS, select Menu > Tools > Settings >General > Positioning > Positioning methods.About satellite signals82