1. Power Button: This button turns the CB radio on or off.
2. Channel Selector: These buttons, often labeled with numbers, allow users to select specific channels for communication.
3. Volume Control: These buttons adjust the audio output volume of the radio.
4. Squelch Control: The squelch feature helps reduce background noise and interference. Using these buttons, users can adjust the level at which the radio receives signals to eliminate weak and unwanted transmissions.
5. PTT (Push-to-Talk) Button: This is the main button used to transmit audio over the selected channel. When pressed, the radio transmits the user's voice.
6. Channel Scan Button: This button enables the radio to automatically scan through available channels, stopping when it detects an active signal.
7. Channel Memory Buttons: These buttons allow users to store frequently used channels for quick access.
8. Call Channel Button: This button, often labeled "9," is typically assigned as the emergency channel or call channel, enabling users to quickly switch to it during emergencies or for making general announcements.
9. Display Screen: Some CB radios have a display screen that shows information such as the selected channel, signal strength, and other settings.
10. Microphone Gain: These buttons control the sensitivity of the microphone, allowing users to adjust their audio input levels for optimal voice transmission.
11. RF Gain: This feature, if available, adjusts the sensitivity of the radio's receiver to boost weak signals or reduce strong signals to prevent overpowering the audio.
12. NB/ANL Button: Noise Blanker (NB) and Automatic Noise Limiter (ANL) buttons help reduce background noise and electrical interference.
13. Mode Selector: This button allows users to switch between different operating modes, such as AM (Amplitude Modulation) and SSB (Single Sideband), each providing different signal characteristics.
It's important to note that the specific buttons and features available may vary depending on the model and make of the CB radio. Please consult the user manual of your specific radio for more detailed information about the functions of each button.