CB radio![click to hear](/images/speaker.jpg)
Two-way radio often installed in a vehicle; it transmits the human voice over reserved frequencies on a public band.
microphone jack ![click to hear](/images/speaker.jpg)
Unit designed to accept a microphone cord plug.
channel selector ![click to hear](/images/speaker.jpg)
Button that selects a frequency channel for sending or receiving voice messages.
display ![click to hear](/images/speaker.jpg)
Liquid crystal display that shows the channel in use.
microphone ![click to hear](/images/speaker.jpg)
Device that converts electric pulses into broadcast or recorded sounds.
push-to-talk switch ![click to hear](/images/speaker.jpg)
When this button is pressed, voice messages can be sent from one CB unit to another; when it is released, messages can be received.
cord ![click to hear](/images/speaker.jpg)