22
Understanding Scanning
Conventional Scanning
Conventional scanning is a relatively simple concept.
Each group of users in a conventional system is
assigned a single frequency (for simplex systems) or
two frequencies (for repeater systems). Any time one
of them transmits, their transmission always goes out
on the same frequency. Up until the late 1980s, this
was the primary way that radio systems operated.
Even today, there are many 2-way radio users who
operate using a conventional system:
• Aircraft
• Amateur radio
• FRS/GMRS users
• Broadcast AM/FM/TV stations
• Many business radio users
When you want to store a conventional system, all you
need to know is the frequencies they operate on.
When you are scanning a conventional system, the
scanner stops very briefly on each channel to see if
there is activity. If there isn’t, the scanner quickly
moves to the next channel. If there is, then the
scanner pauses on the transmission until it is over.
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
452 454 455
462
464
465 466 503
506 516 523
526
532
546 565 606
612 624 627
631
632
654 662 664
703 712 723
731
732
734 743 754
Содержание Bearcat BCD396T
Страница 1: ...BCD396T OWNER S MANUAL OWNER S MANUAL...
Страница 141: ...141 Planning System Name Group Name Group Quick Key Talk Group ID Alpha Tag Alert Motorola System Worksheet 2...
Страница 152: ...152 One Year Limited Warranty...
Страница 153: ...153 One Year Limited Warranty...