Unidens TrunkTracker BC235XLT will track Type I, II, IIi, and hybrid
systems. There are 10 "trunking banks". You program the repeater output
frequencies for a particular trunked system into one of the banks (up to 30
channels can be accomodated). Program the system type; Type II (the default
more or less) or Type I. If you select Type I then you can enter the
individual fleet sizes and start locations or select from 16 preset fleet
maps. For Hybrid systems, you enter all the Type I and IIi fleets and
everything else will be Type II. This is obviously a pain if you don't know
the fleet map for a particular system but most are now Type II and as time
passes people will figure out the fleet maps.

	Once programmed all you do is select trunked mode and one of the 10
trunking banks. The scanner will begin searching for the data channel. Once
found, the scanner defaults to search mode if not in scan mode when last
turned off. IDs will be displayed as they are received (Type II looks like
this: 2048  Type I looks like this: 1-5 ). If Delay is on, when the
conversation pauses the ID remains in view and the scanner looks for the
rest of the conversation on another channel until the delay expires. If
Delay is off, it immediately grabs the next ID. If no talk groups are
active you'll  see ---- on the LCD.

	There are 10 Scan Lists for each trunking bank. You enter IDs you want to
scan into these Lists. Each Scan List can take 10 IDs and you can select or
deselect any of the Scan Lists while in scan mode. Of course in scan mode
only the IDs in selected Scan Lists are searched for.

	While in either Search or Scan mode there are 15 repeater activity
indicators across the top of the LCD screen that represent the system
activity. Each indicator (they look like the familiar bank indicators)
represents a repeater in the trunked systems, and the indicators "lit up"
represent active conversations. When the scanner actually locks on to a
conversation the indicators extinguish except for the one which is the
control channel and the one indicator that represents the assigned voice
channel for that conversation.

	If there is a particular conversation that interests you just push Hold
and the scanner will look for and track it until you go back to Scan or
Search mode. Additionally if there is some ID you want to track but it's
not currently active, or even if it is, you can press Man and enter that
ID. TrunkTracker will look for it just like it does in Hold.

	There is a display mode where the scanner does not actually receive any
talk group but rather just shows the IDs currently active on the system,
displaying each one in turn for 2 seconds.

	That's about it. The user interface was designed to be as nearly the same
as a conventional scanner's. The main difference is that instead of
searching or scanning for frequencies you search or scan for talkgroups.

Hope this helps.