Kenwood TH-D74A/E - APRS; APRS Feature on the TH-D74 A;E; Relative Direction Display (New Feature); Transmission of Object;Item Information (New Feature)

3 APRS
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3 APRS
3.1 APRS Feature on the TH-D74A/E
This section will introduce you the many enhanced APRS features of this new digital
portable.
Relative Direction Display (New Feature) 3.1.1
While the TH-D72A/E also comes with a feature that shows the direction in which the target
station is located relative to my station, the display of this feature has been enhanced
significantly on the TH-D74A/E. The direction in which my station is advancing is displayed
at the center of a big compass, while the direction in which the target station is located as
well as its advancing direction is shown on the circumference for easy identification.
The display can also be toggled between North Up and Heading Up by pressing
[F]
key. Based on the display, it is possible to figure out whether the target station is
moving toward the same advancing direction as my station.
Example: When W4DJY-9 (target station) is located at 45 degrees from my station and
moving south-eastward at a speed of 70 mph.
T
ransmission of Object/Item Information (New Feature) 3.1.2
The TH-D74A/E supports transmission of object and item information.
"Object information” transmission of object and item information. Not possess a radio, like
a hurricane or a marathon runner. These objects are characterized by a time stamp they
possess.
"Item information”, like a hurricane or a marathon location, these do not have a time stamp.
Object and item information are transmitted using the predefined object name and item
name respectively. When data of an object or item is received, the object name or item
name appears in the Callsign display area.
Live Object/ Live Item
When sending out information on an object or item, configure "Type" to Live Object or Live
Item if the information is only valid for a certain period of time (e.g., period when a hurricane
exists, period when a marathon race is held).
（→
Menu No. 516
）
Killed Object/ Killed Item
When the information is no longer valid, the user who has sent out the object or item
information must select Killed Object or Killed Item as "Type" and send out the object data
or item data.