Understanding scanning – Uniden BC246T User Manual

Page 20

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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 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

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