Uniden Bc785d Trunk Tracker Scanner Owners Manual

❖You can program conventional frequencies in the same bank as trunking systems.
After the scanner finishes checking a trunked system for activity, it will conventionally
scan the other frequencies in the bank (remember, only trunking frequencies are
programmed in Trunk mode).
To scan a mix of trunking and conventional banks, select the banks you wish to be active,
and then press SCAN. The scanner will instantly begin scanning. If you have not
programmed a trunking bank with talkgroup ID’s, you will...

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EDACS®Reception
EDACS®Tracking
TrunkTracker III now allows tracking of EDACS®trunked systems. Until now these widely
used systems have been almost impossible to monitor with a conventional scanner. With
your TrunkTracker III listening to EDACS(s) is remarkably easy, and perhaps even easier
than conventional scanning.
EDACS systems use Transmission Trunking, which means that each transmission is
assigned a new frequency. As the conversation moves through the systems frequencies,
your TrunkTracker III...

An EDACS®Trunked system
This chart shows how talkgroups are organized within an
EDACS system at the Agency level. The individual
talkgroups cannot be shown at this scale because there are
over 2000. However the chart can show the 16 Agencies in
this example. The system is logical and easy to understand.
EDACS systems are typically arranged in an  outline
structure.
The system users are given blocks of talkgroups. Sizes vary
but most large cities and other agencies have blocks of 128
channels. Smaller...

60
Lists. The powerful AFS Partial Entry feature designed into the BC785D lets you use either a
complete talkgroup code, or just the most significant part.
This feature lets you expand or narrow searching and 
scanning to one of 4 levels. By entering only the desired part
of an AFS talkgroup, you can select 2048 talkgroups, 
128 talkgroups, 8 talkgroups, or a single talkgroup. 
For example, you could program every talkgroup in a police
department with just 4 key presses. You can use the AFS 
Partial...

61
EDACS SCAT
With the EDACS SCAT feature turned “ON”, the data stream transmissions will be
eliminated  allowing you to clearly monitor the voice communications on EDACS SCAT
systems.
To monitor EDACS SCAT systems you only need to turn this feature 8:EDCS  SCT.
“ON” with designated frequency. You do not need to enter group ID’s.
Note:As EDACS SCAT is different from the other tracking feature, and it is not a feature
which the scanner  tracks any ID, you do not need to program Talk Group ID in the
Menu...

62
LT R®Reception
LT R®Tracking
LTR®(Logic Trunked Radio) systems are trunking systems used primarily by business or
private communications service providers, such as taxicabs, delivery trucks, and repair
services. These systems encode all trunking information as digital subaudible data that
accompanies each transmission. Users on an LTR system are assigned to specific
talkgroups, which are identified by the radio as six digit numbers. 
These numbers are in the form AHHUUU, where:
A= Area code (0 or 1)...

63
Motorola Reception
Motorola Tracking
There are really two types of Motorola trunking systems. These are usually referred to as
Type I and Type II systems. Type I only occurs on some 800 MHz systems. All VHF, UHF
and 900 MHz trunking systems use Type II.
One important distinction between these two systems is the amount of data transmitted by
each radio when its push-to-talk button (PTT) is pressed. Every radio in a trunked system is
assigned a unique ID so the central site computer can identify it when...

64
Fleet Map Programming
If you have programmed a trunk tracking bank for Motorola press SCANto start Multi-Track,
you will see user IDs display on the display. Since the BC785D defaults to Type II systems,
all the IDs will appear as numbers. However, if you notice a mix of odd and even user IDs,
for example 6477, 2560, 6481, 6144, 1167, etc., then you are probably monitoring either a
Type I or Hybrid systems. These systems are applied only when STATUS BIT is OFF (see
page 66).
You may also notice that...

2. Select USER  CUSTOMby rotating the VFOand pressing
E.
3. Select the size code for the first block by rotating the VFO.
4. Press E.
The next available block displays.
5. Repeat step 3 and 4 until you have selected a size code for
each block.
For details about each size code, 
see Fleet Map Size Codes 
in the Appendix.
Remember! You can also use or instead of rotating the VFO.
Also instead of pressing E, you can press the VFOcontrol.
Programming a Hybrid System
A Hybrid system is simply a Type I...

66
8. Enter a new Spacing Frequency with the keypad.
Note: You can only enter within a range of 5-100 kHz, and 
5 or 7.5 or 12.5 kHz multiples.
9. Press E.
The display changes for entering the Offset Channel.
10. Enter a new Offset Channel with the keypad. The offset
Channel for the first set should be CH380.
Note: You can only input within a range of 380-759.
11. Press E.
The display changes for entering the Base Frequency.
12. To exit from this mode, press MENUrepeatedly.
Note:•If the system is not...