Uniden America Corporation UB359 ユーザーズマニュアル

Location-based Scanning

Location-based scanning allows you to control which systems/sites and channel groups are

scanned based on your exact location. This frees you from having to manually enable and

disable systems or channel groups as you change location.

To use Location-Based scanning, you need to have the following:

the location for the center point for each system/site or channel group you want to control

the radius or distance from the center point you want to set as the range for each

system/site or channel group

if you are scanning while traveling, you may want to include the heading (direction) of travel

some type of mapping method. If you don't want to use paper maps, you might try a mapping

software (such as Microsoft® Streets and Trips or Delorme® Street Atlas) that allows you to

draw markings and overlays on maps.

a GPS receiver with a serial data output (NMEA)

There are many different approaches you can use to determine where to place a center point for

a system/site or channel group. The two most common are the geopolitical approach and the

antenna-centric approach. For large trunked systems, you may find that a combination of these

two approaches works best.

The Geopolitical Approach

With the

geopolitical

approach, you

want the

scanner to turn

on the

system/site or

channel group

at the limit of

relevance

rather than

reception. This

approach is

useful for

scanning

targets that

have a well-

defined

jurisdiction and

their

transmission

are only relevant when you are within that jurisdiction.

To use the geopolitical approach, find the geographical center of the scanning target's “territory”

(whether city, county, district, precinct, or other agency jurisdiction), and set these coordinates as

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