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trunked system. If you do this accurately, you’ll track all the Fleet-Subfleet combinations used by the system. In other words, you’ll
hear complete communications while monitoring a trunked system.
If you don’t already know the size codes used, you’ll have to guess at them. But since you don’t have to figure out all the blocks at
once, this isn’t as hard as it seems. Select a size code for a block, and then press
Scan
. Now listen to the communications. If you
decide you are receiving most of the replies to the conversations with ID’s assigned to the block you just programmed, then you’ve
probably selected the right size code and can work on the next block of the map.
Finally, for most public safety systems there are some size codes which are more common. S-3 and S-4 are probably the most
common, followed by S-10, S-11, and S-12.
Size Code Restrictions
If you select size code S-12, S-13, or S-14, there are some restrictions as to which blocks can be used for these codes.
•
S-12 can only be assigned to Blocks 0, 2, 4, or 6.
•
S-13 can only be assigned to Blocks 0 and 4.
•
S-14 can only be assigned to Block 0.
Since these size codes require multiple blocks, you will be prompted for the next available block when programming a fleet map. For
example, if you assign Block 0 as an S-12, you will be prompted for b2, the next block available, instead of b1. And if you assign
Block 0 as an S-14, you would not see another prompt because it uses all available blocks.
Preprogrammed Systems and Lockout Options
Your scanner is preprogrammed with over 500 channels covering police, fire, and ambulance operations in the 25 most populated
counties in the US. The following list details the preprogrammed information.
By default, only the Nationwide systems are unlocked, and your scanner begins to scan them when you turn it on. To speed up
scanning, you can lock out systems that are beyond your reception area (typically no more than 25 miles using the supplied antenna).
Suggestion: Do not unlock all the preprogrammed sites. You may wish to lock all the sites and unlock only those in your area by
using their Quick Key.
Follow these steps to lock out systems.
1. Press and hold
[FUNC]
2. While continuing to hold , rotate the Scroll Control to select a system you want to lock out.
3. While continuing to hold , press
L/O
to lock out the system.
4. Repeat Steps 2, and 3 to lock out additional systems.
The preprogrammed systems provide a starting point; you will want to find out more information about your local radio systems so
you can customize the programming to better suit your listening preferences.
Notes
:
The list is subject to change.
You might hear transmissions on frequencies assigned to very distant stations. This will happen if a local system also uses the
same frequency. Disregard the text tag for these transmissions (e.g. if you are in California, you aren’t really receiving Florida
transmissions even if the scanner displays
Dade County
).
To free up memory, delete systems that you will not be monitoring.
Data used for the preprogrammed information was supplied courtesy of
http://www.radioreference.com
, the Internet’s premier
scanning resource (RadioReference is not affiliated with Uniden America Corporation).
