33GPS FunctionFT3DR is equipped with GPS (Global Positioning System) reception function.When receiving signals from GPS satellites, the current position (latitude, longitude, alti-tude) can be calculated and displayed within the tolerance of several meters. In addition,GPS can receive the exact time from a satellite-mounted atomic clock.For additional details on the following Functions, refer to the Advanced Manual which maybe downloaded from the Yaesu website.Tone squelch featureThe tone squelch opens the speaker audio only when a signal containing the specifiedCTCSS tone is received. By matching the tone frequency with the partner station in ad-vance, a quiet standby is possible.Digital Code squelch (DCS) featureDCS (Digital Coded Squelch) function that allows audio to be heard only when signalscontaining the same DCS code are received.Digital Personal ID (DP-ID) featureDigital Personal ID (DP-ID) feature opens the speaker audio only when a signal set to thesame DP-ID in the Digital Mode is received.