Uniden Bc785d Trunk Tracker Scanner Owners Manual

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PLAN 1: Use Plan 1 if the last three digits of ALL the frequencies in use end in one of the
following three digits: 125, 375, 625, or 875 (example: 856.1125, 860.7375, 859.6625,
855.8875).
PLAN 2: If the last three digits of frequencies are less than 869.0000 and end in one of
the following three digits (125, 375, 625, or 875) and if ANY other frequencies end in (000,
250, 500, or 750) use Plan 2.
PLAN 3: If the last three digits of ALL the frequencies in use end in one of the following
three digits (000, 250, 500, or 750) use Plan 3.
PLAN 4: If the last three digits of frequencies are less than 866.0000 and end in one of
the following three digits (000, 250, 500, or 750) and if ANY other frequencies end in (125,
375, 625, or 875) use Plan 4.
Of course you will know the Control Channel frequency itself so that will help you determine
the proper plan. If you try one plan and you receive errors (such as the scanner jumping to
channels that are obviously not part of the system), you should try an alternate Plan.
Note: In Chain Search mode, Control Channel Trunk is activated in the Menu mode (See
page 20). You must choose one of 4 frequency plans. This plan applies only when
the scanner searches the 800 MHz range. Since a default plan is automatically
used when the scanner searches the 900 MHz range, a user does not need to
select a plan.
Note: You can assign a Fleet Map to TYPE 1 or Hybrid systems scanned in Control
Channel Only mode by going into the Menu. You can also program IDs, set a delay,
alpha tags and all the other parameters for systems scanned in this mode. You can
then either search the system to find new IDs or you can program IDs into memory
and then scan them.
Note: The Control Channel Only feature is an extremely powerful tool. You can use it to
determine if systems you are familiar with may have added new frequencies or you
can use it to discover new systems by simply finding active control channels (using
Search) and then programming them for Control Channel operation only.
Remember that this feature only applies to Motorola 800 and 900 MHz systems,
that you do have to set the Menu for the proper system type (800 MHz of Type 1 or
Type 2 or 900 MHz) and you do have to program the Control Channel frequency
into Memory and press and hold the TRUNKkey to identify the frequency as
trunked.
Disconnect Tone Detect Option (End Code)
When this function is disabled, the radio looks for squelch before returning to the Control
Channel instead of waiting for the Disconnect Tone. Only in rare instances will you need to
adjust the default settings.
The condition to return to Control Channels depends on whether the signal is present or not.
To set this function ON/OFF, select 2:SCAN  OPTION/ 2:TRUNK- select bank
number- / :END  CODE. Select 1:DETECTor 2:IGNORE.
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APCO Project 25 Reception
APCO Project 25 is a modulation process where voice communications are  converted into
digital communications. This conversion is similar to the technology used with digital mobile
phones. There are several types of Project 25 Systems available! Systems Uniden’s
BC785D supports are listed below.
- Conventional – one frequency with digital voice.
- Trunked with analog control channel and digital voice – Many frequencies shared by many
departments and the control channel is analog with digital voice. Control channel operates
at 3600 Baud.
- Mixed mode – trunked (3600) system with an analog control channel alternating / mixing
analog and digital voice communications.
Installing the APCO P-25 card
Note:Do not install the APCO P-25 card with the AC Adapter connected.
The slot for installing the APCO card is located under the Remote Control Terminal on the
rear of the scanner.
1. Turn OFF the scanner. With a screwdriver, take off the
screw at the center and remove the expansion slot door.
2. Insert the APCO card with the label (the side
“APCO P-25 DIGITAL CARD” is printed)
facing up as shown.
3. Insert the ribbon into the space under the slot.
.8VREMOTE
EXPANSION SLOT
DC 13.8VREMOTE
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							4. Replace the cover and tighten the screw.
5. Turn on the scanner, and APCO  P25  CARD  INSTALLEDappears on the display.
Installation is completed. You can monitor APCO Project 25 systems.
To use P-25 Card, you must program each setting for Conventional mode or Trunking mode.
- Conventional mode – See “Storing Frequencies into Channels in Menu mode” page 26-27.
- Trunking mode – See “Programming and Receiving Digital and Trunked Systems” page
46-48.
Precautions for Installing the BCi25D Card
1. Do not touch the BCi25D card without first removing the static electricity from your body.
To do this touch any metal object to release static electricity build-up before you touch
the BCi25D card.
2. Turn OFF the scanner, before inserting the BCi25D card into the slot.
3. Hold the BCi25D card by its edges when inserting it into the slot.
4. Do not touch any of the terminals. The BCi25D is a sensitive electrical device.
5. Do not operate with an open expansion slot door. This exposes the circuitry to dust and
other environmental particles that causes the unit to function improperly. 
6. When you remove the BCi25D card, pull out the card by the ribbon. 
Turning ON/OFF the APCO P-25 Card
Once the P-25 Card has been installed, the P-25 Card will be actively turned “ON”. To turn
the P-25 Card “ON” or “OFF” follow these instructions:
1. Press MENU.
2. Select 3:SYSTEM  OPTION/ 0:P-25  CARDby rotating the VFOand pressing E.
3. Select 0:P-25  CARD/ 1:ENABLEor 2:DISABLEby rotating the VFOand
pressing Efor your desired operation.
Remember! You can also use or instead of rotating the VFO.
Also instead of pressing E, you can press the VFOcontrol.
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EXPANSION SLOT
13.8VREMOTE
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APCO P-25 Sound Quality Fine Tuning
With each APCO Project 25 system, particularly at 800MHz, the sound quality (C4FM
Demodulation Threshold) may need to be fine tuned specifically for that system.  If the
scanner is not adjusted correctly, the P-25 voice transmissions will sound robotic or
unintelligible.
To adjust the sound quality to match the P-25 system you want to monitor follow these four
steps:
1. While monitoring a specific APCO P-25 frequency, press the /HOLDkey.
Note:In the Trunking mode, press the TRUNKkey instead of the /HOLDkey.
2. Press and hold the number 9key.
3. On Line 1 of the screen you will see SOUND  QULTY:  0050(for example).
This shows the Sound Quality. The lower the level the better the Sound Quality. For
better Sound Quality rotate the VFOup or down. As the threshold adjusts in
increments of 50 at the bottom of the screen watch the Sound Quality level increase
or decrease and continue to rotate the VFOuntil you have achieved the lowest
Sound Quality level. 
Note:• When APCO P-25 signal is not received, SOUND  QULTY:  ****
appears on the display.
• You must have the BCi25D card installed and have an APCO P-25 signal
during this adjustment.
• You can also use the and keys to adjust the sound quality.
- A chart showing the Threshold Adjustment Range is listed below.
Threshold Adjustment Range
Note:• The above Min and Max values are the calculated values that can
be assigned theoretically, and the values are not to guarantee the
operation of the unit.
• The mid threshold value will not change while adjusting the upper and lower
limits.
SOUND QULTY:0050
 867.8375 P25
  Low  Mid  Upp
 0533 1985 3342 
Lower Mid UpperBandMin Default Max Default Min Default Max800MHz 33 533 1883 1985 1992 3342 3842UHF 33 633 1883 1985 1992 3342 3842VHF 158 658 2058 2085 2190 3590 4090
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							71 4. Once you have adjusted the Sound Quality to the lowest possible level, press the E
key.
Press the RSMkey to exit the Sound Quality Adjustment Mode.
* To cancel the adjusted threshold level, press  (Decimal) key.
* The adjusted threshold level for the current frequency can be set back to the default
value by pressing and holding the  (Decimal) key.
* When you change the Sound Quality it affects all other APCO P-25 signals in that
same band. (UHF, VHF, or 800MHz)
* You cannot enter the “Sound Quality Fine Tuning” mode when the scanner is
operating as follows:
1) The receiving frequency is 0 MHz.
2) Air Band Frequency
3) BCi25D card is not inserted
4) BCi25D / P-25 monitoring is disabled
.
.
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							Remote Interface
You can communicate and program your BC785D in numerous ways with peripheral devices
using the Remote Interface Cable port. This radio offers the following modes:
❖PC Control mode
Program and control your scanner from a PC using Uniden’s E-Scanner Software.
❖Clone mode
Clone all the frequencies, trunking talkgroups, and fleet maps programmed into your
scanner to another BC785D scanner or BC250D.
PC Control Mode
To connect Scanner to PC:
Plug the smaller end of the supplied Remote Interface Cable into the remote port which is on
the right side of the scanner. Plug the other end of the cable (DB-9 serial connector) into 
a personal computer’s serial port. A few PC’s may require an adapter, most will not. Of
course, make sure your PC is turned ON.
To program your scanner:
You can program and control your scanner remotely from a PC using Uniden’s E-Scanner
software.
After connecting the scanner to a PC, turn the scanner ON.
To use the Remote (PC Control) mode, you must install Uniden’s E-Scanner software and
use as directed. Make sure that your scanner is connected to the serial port of the PC using
the Remote Interface Cable.
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Start Remote Mode and Change Transfer Speed:
Through the Menu system, select 3:SYSTEM  OPTION/
5:PC  CONTROLby rotating the VFOand pressing E. To start
Remote mode, choose from the transfer speed list except for
5:OFF.
A unique feature of the BC785D is that all the front panel keys
as well as the VFOon the radio remain operational in Remote mode.
For information on purchasing cables, connectors, and E-Scanner software to program and
control your BC785D, you can contact the following:
Uniden Parts Department (800) 554-3988 
(Hours are from 7:00 a.m. to 5:00 p.m. Central Time 
Monday through Friday)
scanner.uniden.com
PC Control Parameter
For your information:
Transfer speed : 2400/4800/9600/19200 bps (adjustable)
Start/Stop : 1 bit, 1 bit
Data Length : 8 bit
Parity bit : None
Code : ASCII code
Flow Control : None
Return Code : Carriage Return only
Clone Mode
You will need to purchase a Gender Changer and a null modem adapter. Gender Changer
cables are available as male to male or male to female. Even if the Gender Changer you
buy already has the male to male connectors, you will still have to have the null modem
adapter. On the next page you will see the pin connections that are internal to a standard
device. (These items are available at your local electronics stores.
SPEED
3:9600 bps
4:19200 bps
5:OFF
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To connect the Scanner to Scanner:
Plug the smaller end of each of the supplied Remote Interface Cables
into the remote ports which are on the right sides of each of the two
scanners.
Plug the other ends of the cables (DB-9 serial connector) together
using a DB-9 to DB-9 null modem adapter, and a Gender Changer
Cable available at most computer stores.
You can clone all of the programming of one BC785D into another, including frequencies,
talkgroup IDs, alpha tags, delay settings, etc. After connecting the two scanners, turn the
radios ON. Prepare each scanner for clone mode as follows.
1. Press MENU.
2. Select 3:SYSTEM  OPTION/6:CLONEby rotating the VFOand pressing E.
3. Determine the scanner that has the frequency data that you want to transfer. This one
must be set up as the Master Unit, and the other must be set as the Slave Unit.
4. On the scanner that is the Master Unit, select MASTER,
then press E.
5. On the scanner that is the Slave Unit, select SLAVE, then
press E.
EXPANSION SLOTEXPANSION SLOT
Female
DB9Male
DB9
14
23
32
46 & 1
55
64
78
87
9Not used
Null Modem Adapter 
Pin connections
CLONE
SELECT UNIT
MASTER
SLAVE
CLONE
SELECT UNIT
MASTER
SLAVE
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							6. Press SCANon both scanners. 
The data transfer begins from the Master Unit to the Slave
Unit.
During the data transfer, both scanners show the following
displays.
When the data transfer is complete, COMPLETEdisplays.
If the data transfer is not successful, the following error
message will appear.
Note:•To clear ERROR, press  (decimal key).
To exit the Clone mode, press MENUrepeatedly.
Note•Once you have completed the cloning of the scanners, reset the scanners by
turning the scanners OFF and then ON again. This is particularly important to know
if you wish to clone another scanner right away.
Remember! You can also use or instead of rotating the VFO.
Also instead of pressing E, you can press the VFOcontrol.
.
75
CLONE
== >
MASTER UNIT
CLONE
== <
SLAVE UNIT
CLONE
    COMPLETE
MASTER UNIT
CLONE
ERROR
MASTER UNIT
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Additional Features
The following additional features are designed for you to customize your scanner. Once
these features have been turned ON or OFF, they will remain as they are set until you reset
them, even if you turn the scanner OFF and then ON again.
Dimmer
To change brightness of the display:
1. Press MENU.
2. Select 3:SYSTEM  OPTION/ 1:DIMMERby rotating the VFOand pressing E.
3. Select one from 1:HIGH,2:MEDIUMor 3:OFFby rotating the VFOand pressing E.
Enter Lock
You can lockout the keypad to prevent re-programming of channels, talkgroups and tones
(see page 82).
1. Press MENU.
2. Select 3:SYSTEM  OPTION/ 4:ENTER  LOCKby rotating the VFOand pressing
E.
3. Select 1:ONby rotating the VFOand pressing E.
Key Beep Option
To choose key beep sound 1:ONor 2:OFF:
1. Press MENU.
2. Select 3:SYSTEM  OPTION/ 3:KEY  BEEPby rotating the VFOand pressing E.
3. Select 1:ONor 2:OFFby rotating the VFOand pressing E.
Screen Mask
The trunk, frequency, receiving mode, and signal meter indications on the display are
masked when this feature is activated (except while in Search mode). This feature reduces
the amount of displayed information.
Note: While Screen Mask is ON, Enter Lock is active.
1. Press MENU.
2. Select 3:SYSTEM  OPTION/ 2:SCREEN  MASKby rotating the VFOand pressing
E.
3. Select 1:ONor 2:OFFby rotating the VFOand then press E.
Note: With SCREEN MASK on, press the VFO, then SCREEN MASK will be off.
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