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Uniden BC246T English Owners Manual - Page 20

Understanding Scanning, CTCSS Frequencies Hz, DCS Codes Octal

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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 and you hear nothing. You can search for the following CTCSS frequencies and DCS codes. CTCSS Frequencies (Hz) 67.0 82.5 100.0 123.0 151.4 171.3 189.9 210.7 69.3 85.4 103.5 127.3 156.7 173.8 192.8 218.1 71.9 88.5 107.2 131.8 159.8 177.3 196.6 225.7 250.3 74.4 91.5 110.9 136.5 162.2 179.9 199.5 229.1 254.1 77.0 94.8 114.8 141.3 165.5 183.5 203.5 233.6 79.7 97.4 118.8 146.2 167.9 186.2 206.5 241.8 DCS Codes (Octal) 023 025 026 031 032 036 043 047 051 053 054 065 071 072 073 074 114 115 116 122 125 131 132 134 143 145 152 155 156 162 165 172 174 205 212 223 225 226 243 244 245 246 251 252 255 261 263 265 266 271 274 306 311 315 325 331 332 343 346 351 356 364 365 371 411 412 413 423 431 432 445 446 Understanding Scanning 20

Section	Page
Precautions	2
Contents	4
The FCC Wants You to Know	8
Scanning Legally	8
Introduction	10
Feature Highlights	12
General	12
About This Manual	16
How the Scanner’s Controls Are Represented in This Manual	16
Entering Text	17
Understanding Scanning	18
Understanding the Scanner’s Memory	18
What is Scanning?	18
What is Searching?	19
What is CTCSS/DCS?	19
Conventional Scanning	21
Simplex Operation	21
Repeater Operation	22
What is Trunk Tracking?	22
Trunked Scanning	23
Types of Trunking Systems	24
Motorola Trunking	24
EDACS Trunking	25
LTR Trunking	26
I-Call (Motorola/EDACS)	27
Where To Get More Information	27
Included With Your Scanner	29
Setting Up Your Scanner	30
Using Internal Batteries	30
1. Remove the battery cover and set the battery switch.	31
2. Install 2 AA batteries, matching the polarity symbols (+ -).	31
3. Replace the cover.	32
Using Rechargeable Batteries	32
Removing the Display Sticker	33
Using AC Power	33
Connecting the Antenna	33
Connecting an Optional Antenna	33
Connecting an Earphone/Headphone	34
Connecting an Extension Speaker	34
Attaching the Belt Clip	34
Attaching the Wrist Strap	34
Installing the Demo Software	35
A Look At The Keypad	35
A Look At The Display	38
Using Menu	39
Using Func	39
Using the Scroll Control	39
Basic Operation	40
Turning On the Scanner and Setting the Squelch	40
1. Turn Sql fully counterclockwise.	40
2. Press and hold for about 2 seconds to turn on the scanner, then turn Vol clockwise until you hear a hissing sound.	40
3. Turn Sql clockwise until the hissing stops.	40
Scanning Systems	40
Preprogrammed System Tips	41
Selecting Systems to Scan	41
Selecting System Channel Groups	42
1. Press to hold on the system (or hold and rotate the scroll control to select the system).	42
2. Continue to hold and press the number key corresponding to the channel group you want to activate or deactivate.	42
Locking/Unlocking Systems	42
1. While holding down , rotate the scroll control to select the system.	42
2. Continue to hold down and press L/O to lock out the system.	42
3. Repeat Steps 1 and 2 to unlock a system you have previously locked.	42
Locking/Unlocking Channels	42
1. While holding down , rotate the scroll control to select the system where the channel is stored.	42
2. Release then press Hold within 2 seconds to hold on the system.	42
3. Rotate the scroll control to select the channel you want to lock or unlock.	42
4. Press L/O to lock or unlock the channel.	42
ID Scan/ID Search Mode	43
Temporarily Holding On a System	43
Holding On a Channel	43
Quickly Storing an ID During ID Search	43
Quick-Storing Channels or Talk Group ID’s	43
1. Hold on an existing channel in any system.	43
2. Enter the frequency or talk group ID you want to store (press twice to enter hyphens in talk group ID’s).	43
3. To quick-store the channel or talk group ID, press E. Otherwise, press No.	44
Quickly Recalling Channels	44
1. Press Hold to hold on any channel.	44
2. Press + Rcl. The scanner prompts you to select the system where the channel is stored.	44
3. Rotate the scroll control to select the system, then press E. The scanner prompts you to select the channel group where the channel is stored.	44
4. Rotate the scroll control to select the group, then press E. The scanner prompts you to select a channel.	44
5. Rotate the scroll control to select the channel, then press E to hold on that channel.	44
Monitoring Trunking Activity	44
Using the Menu	45
Other Settings	47
Displaying System Information	47
Viewing Memory Used	47
Viewing the Firmware Version	47
Adjusting the Key Beep	47
Locking/Unlocking the Keypad	47
Turning Power Save On or Off	47
Priority Scan	47
Using the Backlight	48
Initializing the Scanner’s Memory	48
Using the PC Control and Cloning Options	49
Connecting Your Scanner to a Personal Computer	49
Cloning the Scanner	50
Programming Radio Systems	51
1. Plan the system.	51
2. Program the system into your scanner according to the plan you prepared in Step 1.	51
Programming Conventional Systems	52
Entering/Editing Conventional Channel Groups	52
Entering/Editing Conventional Channels	53
Programming Motorola Systems	53
Setting System Frequencies	55
Entering/Editing Motorola Channel Groups	55
Entering/Editing Motorola Channels	56
Programming EDACS Systems	57
Setting System Frequencies	58
Entering/Editing EDACS Channel Groups	58
Entering/Editing EDACS Channels	59
Programming LTR Systems	59
Setting System Frequencies	60
Entering/Editing LTR Channel Groups	60
Entering/Editing LTR Channels/Talkgroups	61
Programming/Editing Optional Settings	62
System-Level Settings	62
Editing the System Name	62
1. Rotate the scroll control to select the first letter.	62
2. Press and hold down then rotate the scroll control once to select the next letter.	62
3. Repeat Steps 1 and 2 until you have entered the system name. Then press E or press down on the scroll control to accept the setting.	62
Editing the System Quick Key	62
Setting System Lockout	63
Setting the System Hold Time	63
Setting the Channel Delay Time	64
Setting ID Scan/Search (Trunked Systems Only)	64
Setting the Base Frequency/Step/Offset (Motorola UHF/VHF Systems Only)	65
Setting Data Skip (Conventional Systems Only)	65
Editing the Fleet Map (Motorola Systems Only)	66
Setting the Motorola Status Bit (Motorola Systems Only)	67
Setting the End Code Operation (Motorola Systems Only)	67
Setting I-Call (Motorola and EDACS Systems Only)	68
Setting Emergency Alert (Motorola and EDACS Systems Only)	68
Setting the EDACS ID Format (EDACS Systems Only)	69
Setting Control-Channel Only (Motorola Systems Only)	69
Setting System Attenuation (Trunked Systems Only)	70
Deleting Systems	70
Copying Systems	70
Group-Level Settings	71
Entering/Editing the Group Name	71
1. Rotate the scroll control to select the first letter.	71
2. Press and hold down then rotate the scroll control once to select the next letter.	71
3. Repeat Steps 1 and 2 until you have entered the system name. Then press E or press down on the scroll control to accept the setting.	71
Setting the Group Quick Key	71
Setting Group Lockout	72
Deleting Groups	72
Channel-Level Settings	73
Editing the Channel Name	73
1. Rotate the scroll control to select the first letter.	73
2. Press and hold down then rotate the scroll control once to select the next letter.	73
3. Repeat Steps 1 and 2 until you have entered the channel name. Then press E or press down on the scroll control to accept the setting.	73
Setting Channel Priority (Conventional Channels Only)	74
Setting Channel Alert	74
Setting CTCSS/DCS (Conventional Channels Only)	75
Setting Channel Modulation (Conventional Channels Only)	76
Setting Channel Attenuation (Conventional Channels Only)	76
Setting the Frequency Step (Conventional Channels Only)	77
Setting Channel Lockout	77
Deleting Channels	78
Copying/Pasting Channels	78
Searching and Storing	80
Service Search	80
1. Press then turn the scroll control until Search For . . . appears. Then press E. Or press and Srch, then No. The search feature options appear.	80
2. Turn the scroll control until Service Search appears, then press E to select it.	80
3. Turn the scroll control until the type of service search you want appears, then press E to select it. The following search bands appear.	80
Quick Search	81
CTCSS/DCS Search	81
1. Press then turn the scroll control until SRCH/CLOCALL OPT appears. Then press E. One of the search feature options appear.	81
2. Turn the scroll control until CTCSS/DCS SEARCH appears, then press E to select it.	81
3. Turn the scroll control until ON appears to turn on CTCSS/DCS search or until OFF appears to turn it off, then press E.	81
Custom Search	81
1. Press then turn the scroll control until Search For ... appears. Then press E. Or, press + Scan/Srch, then select No. One of the search feature options appear.	82
2. Turn the scroll control until CUSTOM Search appears, then press E to select it. The scanner starts custom search of the custo...	82
Editing a Custom Search Range	82
1. Press then turn the scroll control until Search For ... appears. Then press E. Or press and Srch, then No. One of the search feature options appear.	83
2. Turn the scroll control until EDIT CUSTOM appears, then press E to select it.	83
3. Turn the scroll control until the name of the custom search range you want to edit appears, then press E to select it. The following options appear as you turn the scroll control.	83
4. Select the option you want to change for the custom search range you selected, then press E.	83
Auto Search and Store	83
Selecting a System	84
1. Press then turn the scroll control until Search For ... appears. Then press E. One of the search feature options appear.	84
2. Turn the scroll control until Search and Store appears, then press E to select it.	84
3. Turn the scroll control until the system where you want to store the frequencies or talk group ID’s appears, then press E to select it.	84
Storing a Conventional System	84
1. Follow Steps 1-3 under “Selecting a System”. A search option appears.	84
2. Turn the scroll control until the type of search you want appears, then press E to select it. A search band appears.	84
Storing a Trunked System	85
1. Follow Steps 1-3 under “Selecting a System”. A search option appears.	85
2. Turn the scroll control until the type of search you want appears, then press E to select it. A search band appears.	85
Using the Close Call Feature	86
Setting Close Call Options	87
1. Press then turn the scroll control until Close Call appears. Then press E. Close Call feature options appear.	87
2. Turn the scroll control to select an option.	87
Close Call Hits	88
Search and Close Call Options	89
Managing Locked-Out Frequencies	89
Unlocking All Frequencies	89
Reviewing Locked Out Frequencies	89
Searching for Subaudible Tones	89
Screening Out Paging Systems	90
Screening Out UHF TV Systems	90
Finding Repeater Output Frequencies	91
Setting the Maximum Auto Store Value	91
Setting the Modulation Type	91
Setting Attenuation	92
Setting Data Skip	92
Setting the Delay Time	93
Setting the Search Frequency Step	93
Using Weather Alert (SAME)	94
Searching For a Weather Broadcast	94
Turning Weather Alert On/Off	94
Programming a SAME Group	95
Setting WX Alert Priority	96
Care and Maintenance	97
General Use	97
Location	97
Cleaning	97
Repairs	97
Birdies	97
Troubleshooting	98
Specifications	101
Optional Accessories	102
Appendix	103
Preset Fleet Maps	103
User Defined Fleet Maps	105
Type I Programming Information	105
Size Code Restrictions	106
Planning	107
Collecting Information	107
1. Collect information about the system(s) you want to monitor.	107
2. Organize the system information using these system worksheets included in this appendix.	108
3. Follow the instructions in “Filling Out The Conventional System Worksheet” on Page 108, “Filling Out The Motorola Worksheet” on Page 109, and “Filling Out the LTR and EDACS Worksheet” on Page 111 to program your scanner.	108
Filling Out The Conventional System Worksheet	108
System Name and Quick Key	108
Group Name and Quick Key	109
Frequency-Alpha Tag-Priority-CTCSS/DCS	109
Filling Out The Motorola Worksheet	109
System Name and Quick Key	109
System Type	109
System Frequencies	110
Fleet Map (Type I or Type I/Type II Hybrid Only)	110
Band Plan (VHF or UHF Only)	110
Group Name and Quick Key	110
Talk Group ID-Alpha Tag-Alert	111
Filling Out the LTR and EDACS Worksheet	111
System Name and Quick Key	111
System Frequencies and LCN	111
Group Name and Quick Key	111
Talk Group ID-Alpha Tag-Alert	111
Conventional System Worksheet	112
Motorola System Worksheet	113
LTR/EDACS System Worksheet	115
Preprogrammed Systems	116
1. Press and hold .	116
2. While continuing to hold , rotate the scroll control to select a system you want to lock out.	116
3. While continuing to hold , press L/O to lock out the system.	116
4. Repeat Steps 2, 3, and 4 to lock out additional systems.	116

Match case Limit results 1 per page

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 and you

hear nothing.

You can search for the following CTCSS frequencies and

DCS codes.

CTCSS Frequencies (Hz)

DCS Codes (Octal)

67.0

69.3

71.9

74.4

77.0

79.7

82.5

85.4

88.5

91.5

94.8

97.4

100.0

103.5

107.2

110.9

114.8

118.8

123.0

127.3

131.8

136.5

141.3

146.2

151.4

156.7

159.8

162.2

165.5

167.9

171.3

173.8

177.3

179.9

183.5

186.2

189.9

192.8

196.6

199.5

203.5

206.5

210.7

218.1

225.7

229.1

233.6

241.8

250.3

254.1

023

025

026

031

032

036

043

047

051

053

054

065

071

072

073

074

114

115

116

122

125

131

132

134

143

145

152

155

156

162

165

172

174

205

212

223

225

226

243

244

245

246

251

252

255

261

263

265

266

271

274

306

311

315

325

331

332

343

346

351

356

364

365

371

411

412

413

423

431

432

445

446