Gps Compatibility; Connecting Your Scanner To A Gps Device; Initial Gps Operation; Non-Radio Location Based Gps Features - Uniden Trunk Tracker IV BCD996T User Manual

You set the longitude and latitude to approximate the center of a geographic entity such as your local city and set the range to
encircle that center point. By doing so you set aside reception of an adjacent city that otherwise might be undesirably received from
one extremity of your city.
In addition, all geopolitical areas are not perfect circles. Therefore you can accommodate these variations by entering multiple sites
for the system, eve though the system actually has one site, and use different location settings for each of those additional sites.
See the programming section for specific steps required to apply location data to a radio system.

GPS Compatibility

The GPS must have serial output, and be capable of outputting standard NMEA sentences GGA and RMC. (See "NMEA-0183
ver.3.01" which can be found on the web.)

Connecting Your Scanner to a GPS Device

To use the Location Based features of the scanner, you must connect a GPS to the unit. Use the cable provided by the GPS
manufacturer. Make sure that their cable terminates in a female, 9-pin serial connector. Insert that plug into the male, 9-pin socket on
the back of the scanner labeled REMOTE/GPS. Once the GPS is connected, refer to the sections dealing with inputting selections to
enable Location Based feature operation.

Initial GPS Operation

When the scanner first starts receiving a signal from the GPS, it briefly displays GPS Connected and silently locks and unlocks all
radio sites according to your current location. If you have a lot of data programmed, it might take the scanner a couple of minutes to
complete the process. Once the scanner completes the initial GPS review, if you move into or out of an area covered by a radio site,
the scanner beeps and displays the name of the system and whether it is being locked or unlocked.
Note:
The GPS function temporarily locks out sites and systems when you move out of their range. If you cycle power, all systems are
unlocked until the scanner reacquires the GPS signal and completes the initial GPS review.

Non-Radio Location Based GPS Features

When connected to a GPS, you can program specific location information which will trigger an alert from the scanner. The following
geographically based values are typical of the use you might find valuable while traveling. Use the menu to input the necessary data
to enable each.
•
Dangerous Xing — Stores location, and direction of travel. If you are in range, traveling in a direction that will take you to that
Point, the radio sounds an alert at .5, .25, and .1 miles from the point.
•
Dangerous Road — Stores location, direction of travel, and speed. If you are traveling at a speed greater than that specified
and if you are within range of the set location, the scanner sounds an alert at .5, .25, and .1 miles from the point.
•
Points of Interest (POI) — Stores location and range. If you approach the set location, the radio sounds an alert.
In general, an alert based on location is comprised of the following data:
•
Latitude
•
Longitude
•
Speed (optional setting)
•
Name (optional setting)
•
Alert Type and Sound level (optional setting)
•
Direction (optional setting)
Be sure to set the GPS to output NMEA.
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