Uniden Bc246t Trunk Tracker Scanner Owners Manual

11
Introduction
29.7-49.990 10 NFM VHF Low Band
50.0-54.0 20 NFM 6 Meter 
Amateur Band
108.0-
136.975025 AM Aircraft Band
137.0-
143.987512.5 NFM Military Band
144.0-
147.9955NFM2 Meter 
Amateur Band
148.0-
150.787512.5 NFM Military Land Mobile
150.800-
161.9955 NFM VHF High Band
162.0-174.0 12.5 NFM Federal 
Government
216.0-224.98 20 NFM 1.25 Meter Amateur 
Band
400.0-
405.987512.5 NFM Miscellaneous
406.0-
419.987512.5 NFM Federal Land Mobile
420.0-
449.987512.5 NFM 70 cm 
Amateur Band
450.0-...

12
Feature Highlights
Feature HighlightsGeneral
Close CallTM RF Capture Technology - you can set the 
scanner so it detects and provides information about 
nearby radio transmissions. See “Using the Close Call 
Feature” on Page 86 for more information.
Dynamically Allocated Channel Memory - your 
scanner ’s memory is organized so that it more closely 
matches how radio systems actually work, making it easier 
to program and use your scanner and determine how 
much memory you have used and how much you...

13
Feature Highlights
Dropout Delay – You can set whether the scanner 
pauses at the end of a transmission to wait for a reply. 
You can set the delay time for each system you scan, and 
while searching and using the Close Call feature.
Attenuator – You can set the scanner ’s attenuator to 
reduce the input strength of strong signals by about 18 dB 
received by the scanner.
Repeater Reverse – You can set the scanner so it 
switches to the input frequency on a conventional 
repeater system.
Channel Alert...

14
Feature Highlights
21 Bands – Includes 21 bands, with Aircraft and 800 MHz.
Note: The scanner’s frequency coverage is not continuous 
and does not include the cellular telephone band. 
Trunk Tracking
Trunk Tracker™ Operation – Follows conversations on 
analog Motorola, EDACS, EDACS SCAT, and LTR 
trunked radio systems. The scanner can scan both 
conventional and trunked systems at the same time.
Control Channel Only Scanning – If the scanner is set 
to scan Motorola trunking frequencies, you can set...

15
Feature Highlights Auto Store
Frequency AutoStore – Automatically stores all active 
frequencies within a system you select. 
Talk Group ID AutoStore – Automatically stores all new 
talk group ID’s into a system you select. 
Priority
Priority Scan – Priority channels let you keep track of 
activity on your most important channel(s) while 
monitoring other channels for transmissions. 
Priority Plus – You can set the scanner so it scans only 
the priority channels 
Backlight and Power
LCD Back Light –...

16
Feature Highlights
Clone Mode – You can clone all programmed data, 
including the contents of the scanner’s memory, menu 
settings, and other parameters from one BC246T 
scanner to another BC246T scanner.
About This Manual
The screen displays used in this manual are 
representations of what might appear when you use your 
scanner. Since what you see depends on the frequencies 
and user ID’s for your area and the settings you select, 
you might notice some differences between what is in this 
manual...

17
Feature Highlights
Entering Text
To enter a letter, turn the scroll control until the 
character you want appears, To enter a number, press a 
number key. To enter a decimal point, press  . 
To move the cursor to the left, hold   then press /4 
or rotate the scroll control to the left. To move the cursor to 
the right, hold   then press 6/ or rotate the scroll 
control to the right.
To clear a character, press No twice. To clear all 
characters, press No 3 times.
To accept an entry, press E or press...

18
Understanding Scanning
Understanding ScanningThis section provides you with background on how 
scanning works. You don’t really need to know all of this 
to use your scanner, but some background knowledge 
will help you get the most from your BC246T. 
Understanding the Scanner’s Memory
Your scanner’s memory is organized in an architecture 
called Dynamic Allocated Channel memory. This type of 
memory is organized differently and more efficiently than 
the bank/channel architecture used by traditional...

19
Understanding Scanning
cycle resumes until the scanner receives another 
transmission. 
What is Searching?
The BC246T can search each of its 21 bands and up to 
10 bands together to find active frequencies. This is 
different from scanning because you are searching for 
frequencies that have not been programmed into the 
scanner. When you select frequency bands to search, the 
scanner searches for any active frequency within the 
lower and upper limits you specify. When the scanner 
finds an active...

20
Understanding Scanning
frequency. The stations might even interfere with each 
other to the point where it is impossible to clearly receive 
any of the stations. A scanner equipped with CTCSS and 
DCS (like your scanner) can code each received 
frequency with a specific CTCSS or DCS frequency. 
Then, when you receive multiple signals, you only hear 
the transmission with the CTCSS or DCS tone you 
programmed. If you do not receive the correct tone with a 
signal, the scanner’s squelch remains closed...