Radio Shack PRO-528 - Manual (Page 70)

70
Beyond the Basics
scanning type I and hybrid
trunked systems
Your scanner is preset to scan Type II
system IDs. When you scan trunked
frequencies, each Type II user ID you see
appears as an even number without a dash
(example 2160). Your scanner can also
scan Type I trunked systems. Each Type I ID
appears as a three- or four-digit number,
followed by a hyphen, followed by a one-
or two-digit number (example 200-14).
If you notice a mix of odd- and even-user
IDs (examples 6477, 2160, 6481, 6144, and
1167), then you are probably monitoring
either a Type I or hybrid (a combination of
Type I and Type II user IDs) system with the
S-Bit function turned off (see “turning the
status bit ignore (S-Bit) on or off”).
Subfl eet information is included with the
frequency list for a Type I system. To enter
the provided map, see “programming a
fl eet map”.
Note: To locate suitable fl eet map
information, review the contents of
website www.trunkscanner.com.
If you do not already know the size codes
used, you will have to guess. Since you do
not have to fi gure out all the blocks at one
time, this is not as hard as it might seem.
Notes