Uniden BCT12 Operations Instructions download pdf (Page 2)

Terms and Definitions

Frequency Radio signals are sent as waves through the air. These

waves move up and down. A frequency is the number of

times in a certain time period, usually a second, that

these waves move all the way up and all the way down

and back to all the way up. For example: 123.450 kHz

means that the waves are moving all the way up and all

the way down and back all the way up again 123,450

times each second.

Mobile Extender Most Highway patrol vehicles on the road today are

equipped with a secondary radio system known as a

“mobile extender” or “vehicle repeater.” Whenever the

dispatcher transmits to any vehicle in the district, every

“mobile extender” in every car withing the district is

activated.

Priority Alert Using a constant PRIORITY check of specific

frequencies in each state, the BCT-12 recognizes and

alerts you to transmissions from “mobile extender”

radios as well as from car-to-car, aircraft-to-aircraft and

other special-purpose frequencies. You receive an

audible (beep tone) and visual (flash of warning light)

alert whenever you are within an approximate three mile

radius of many Highway Patrol/State Police units.

Scanning Scanning is the process by which your scanning radio

checks each frequency for the presence of a signal, and

when it finds a frequency with a signal, for example

someone talking on it, it stops, allowing you to listen to

the signal.

Weather Alert Lets your scanner function as a severe weather warning

radio. With Weather Alert turned on, when the NOAA

issues a severeweather warning radio. With Weather

Alert turned on, when the NOAA issues a severe

weather warning, the BCT-12 sounds an alert tone and

youl will hear the emergency weather broadcast.

Introduction

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Uniden BCT12 Operations Instructions Page 2