Channel Activity Bars; Using Talk Group Id Lists - Radio Shack PRO-94 Owner's Manual

CHANNEL ACTIVITY BARS

Your scanner displays up to 20 channel activity bars for
the stored frequencies in a bank. These bars indicate
the activity taking place on a trunked system. By ob-
serving these bars, you can see how many frequencies
are being used and generally monitor how much com-
munication traffic occurs.
Each frequency you store in a trunking bank has a cor-
responding activity bar. However, there are only 20
bars for a possible maximum of 50 frequencies. If the
trunk system contains more than 20 frequencies, some
bars will represent more than one frequency.
• If a bar appears steadily without any voice trans-
mission, it represents the frequency in use as the
data channel.
• If a bar appears and flashes when an ID appears,
the bar represents the frequency being used by
the trunk system transmitter.
• If a bar appears without any voice transmission,
the channel is probably being used for a telephone
interconnect call or a private call, or the bar might
be a locked-out ID. Your scanner does not monitor
these types of calls.
• If the scanner is holding on an ID which is not
being used, the other activity bars turn on and off
as other groups use the system.

USING TALK GROUP ID LISTS

When you program trunked frequencies into a bank
(see "Storing Trunked Frequencies" on Page 43), your
scanner sets up 5 scan lists for that one bank in which
you can store your favorite IDs. Each list can contain
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