Using A Gps; Location-Based Scanning - Uniden BCD436HP User Manual

Press Func and rotate the Scroll Control to set the MAN decode threshold
start level to a setting that most closely matches the system's optimum decode
threshold. Whatever you set at this point will be remembered for this site as the
starting point for the auto-tuning function for subsequent transmission on that
site. See also P25 Threshold Level.

Location-Based Scanning

You can connect the scanner to a compatible GPS device and set the scanner to
automatically Avoid and Unavoid Departments and Sites based on your current
location. This frees you from having to manually enable and disable Departments
and Sites as you change locations.
For the BCD436HP, use the 4-pin mini plug to connect to the scanner using a
NMEA compatible GPS device. The BCD536HP has a 9-pin RS232 male serial
connector and you should select a baud rate of (4800 bps) for the serial port.
A good application of this feature would be to set the longitude and latitude for
each multi-site system transmitter as usually you can receive at least a handful in
any given location. Set the range to around 30 miles and the scanner will
automatically Avoid or Unavoid Sites when in and out of range. It may also be
relevant to set different locations/ranges for the Departments within the site.
You can find the physical location of antennas using the databases available at
Radio Reference or the FCCs Antenna Structure Registration site.
Both sites list the latitude, longitude, and height of the antenna and both sites can
map the exact location for you.
Once the scanner completes the initial GPS review, if you move into or out of an
area covered by a Site/Department, the scanner will Avoid and Unavoid Sites and
Departments according to Range settings for the scanner and Sites/Departments.
If you cycle power, all Sites/Departments are Unavoided until the scanner
reacquires the GPS signal and completes the initial GPS review.
Notes: If you unplug your GPS device or it loses reception to satellites, the
scanner will use the last known location as the current location.
See also Set Location to set your Location, Range, and relevant GPS options.
See also Understanding Location Control and Understanding Range.
All Sites/Departments with locations set and not within range of your current
location will be temporarily Avoided.

Using a GPS

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