User`s manual

Tracker3 User’s Manual 5
Another option is an APRS-capable radio, like those sold by Kenwood and
Yaesu. These radios have a text display, but require a mapping GPS receiver to
display the positions of other stations graphically.
An ordinary radio with a TNC can be used in conjunction with a laptop
computer or PDA to provide full APRS functionality, including mapping and
messaging, although this is usually the most expensive option and may not be
practical to operate while driving.
3. Where the Tracker3 Fits In
The Tracker3 has the capability to fill a number of roles in the APRS system. As
the name implies, it’s a tracker – it can format and transmit position data from a
GPS receiver for transmission over APRS. It also receives and decodes positions
from other APRS stations.
When it receives a position for a station or map object, the Tracker3 can create a
GPS waypoint for that position. On a mapping GPS receiver, this allows the user
to see the locations of other stations on the map, updated as each new position is
received.
When used with a suitable mapping GPS receiver, the tracker will pick the most
appropriate symbol for the waypoint (including custom APRS symbols if
available), extract the altitude, and insert the status text (often including course
and speed) into the waypoint details. For many applications, this can eliminate
the need for a PC or similar device to act as a display.
Aside from its tracking capabilities, the Tracker3 can also function as a
digipeater. Its remote control capabilities allow it to be reconfigured remotely,
and even through IGates, and its path limiting features let the sysop reduce the
amount of extraneous traffic carried by the network.
In KISS mode, the Tracker3 can also function as part of an IGate, when connected
to a PC with an Internet connection and appropriate software.
With few exceptions, the Tracker3 can perform all of its functions concurrently.
For example, a mountaintop installation could function simultaneously as a
digipeater, weather station, site monitor (reporting voltage and temperature),
and TNC for an IGate.