Setting The Status Bit Feature (S-Bit) - Radio Shack 20-162 User Manual

Setting the Status Bit Feature (S-Bit)

To control how the scanner interprets and displays
talk group IDs, set status bits (also called S-Bits),
to Yes or Ignore. The last four bits of a Motorola
Type II talk group ID (a binary 16-bit code) are the
status bits. In some systems, status bits identify
special situations (such as an emergency status).
Your scanner is preset to assume that the
status bits in a talk group ID are set to 0 and
ignores them (S-bit feature = Ignore). For
example, when the scanner receives the talk
group ID 010111001110 0011, it reads the ID as
010111001110 0000 and converts the first 12 bits
of the ID to 23776 (the talk group ID). However,
since the status bit value is 3 (0011 converted to
decimal equals 3), the ID is actually 23779.
Note: If you are scanning a Motorola
Type I system and do not have a fleet
map for that system, you might have
to set the status bit feature to Ignore in
order to determine the proper fleet map.
Important: If you are scanning any system
other than a Motorola Type I system, be
sure the status bit feature is set to Yes or
you will miss some transmissions.
To set the status bit feature to yes or ignore.
1. Press FUNC + MAN/MENU to open Menu
Mode.
2. Select Trunk Option, then press ENT/PGM. Press
or to select a bank, then press ENT/
PGM.
3. Select MOT, and press ENT/PGM.
4. Select Set Status Bit, and press ENT/PGM.
5. Select Yes or Ignore, and press ENT/PGM.
Trunk Scanning
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