Retevis MB63B CB Radio with Antenna User Manual

1. Introduction

The Retevis MB63B is a versatile CB radio designed for reliable communication in various environments, including commercial trucking and off-road adventures. It features AM/FM modes, adjustable RF gain, advanced NRC noise reduction, and a clear color LCD display. This manual provides detailed instructions for setting up, operating, and maintaining your MB63B CB radio.

Figure 1: Retevis MB63B CB Radio overview.

Key Features:

• Long Range Communication: AM/FM modes with adjustable RF gain for clear communication over long distances.
• Clear Audio: Advanced NRC noise reduction eliminates ambient noise, ensuring clear calls.
• Color LCD Display: Bright TFT color screen with adjustable backlight and contrast for optimal visibility.
• Universal Compatibility: Supports 12V/24V vehicle power systems.
• Hands-Free Operation: Voice Activated Transmission (VOX) for safe communication while driving.
• Emergency Channels: Instant access to emergency channels CH9/19.
• Robust Design: Solid chassis and reinforced microphone for durability.

2. Package Contents

Verify that all items are present in the package before proceeding with installation.

Figure 2: Included components.

• CB Radio x1
• Antenna x1
• Cigarette Lighter Power Cable x1
• Microphone x1
• Main Mounting Bracket x1
• Bracket Knobs x2
• Mounting Screws x4
• Microphone Hanger x1
• Anti-slip Mat x4
• Stop Pad x2
• Spare Fuse x1
• User Manual x1

3. Setup and Installation

3.1 Mounting the Radio

The Retevis MB63B is designed for easy installation in various vehicles. Use the provided main mounting bracket and screws to secure the radio in a convenient location within your vehicle. Ensure the location allows for proper ventilation and easy access to controls.

Figure 3: Example installation in a vehicle.

3.2 Power Connection

The MB63B CB radio is compatible with both 12V and 24V vehicle power systems. Connect the provided cigarette lighter power cable to your vehicle's power outlet and to the radio's power input. Ensure a secure connection.

Figure 4: Power adapter and vehicle compatibility.

3.3 Antenna Installation

Connect the included antenna to the antenna connector on the rear of the CB radio. Position the antenna for optimal signal reception, typically on the roof or a high point of the vehicle. No additional tuning is required for the included antenna.

Figure 5: Antenna connection.

3.4 Microphone Connection

Plug the microphone cable into the designated microphone port on the front panel of the radio. Use the microphone hanger to secure the microphone when not in use.

4. Operating Instructions

4.1 Controls and Functions Overview

Familiarize yourself with the radio's controls as shown in the diagram below.

Figure 6: Front panel and microphone controls.

• 1. ASQ ~ SQ Knob (ASQ ~ SQ Button): Rotate to adjust noise reduction. Press to adjust noise reduction level in CB or V mode.
• 2. AM/FM CB/WX Button: Short press for AM/FM. Long press to switch between CB and WX modes.
• 3. SCAN / RB (Scan / Repeater) Button: Short press to scan channels. Long press for Roger Beep menu.
• 4. EMG Button: Short press for emergency channels. Long press for key lock.
• CH Up/Down Buttons: Select channels.
• FUNC/MENU Button: Access function menu.
• PTT (Push-To-Talk) Button: On microphone, press to transmit.
• Microphone Up/Down Buttons: On microphone, adjust channel or menu settings.

4.2 Powering On/Off and Volume

To power on the radio, rotate the VOL knob clockwise. Continue rotating to adjust the volume. Rotate counter-clockwise until it clicks to power off.

4.3 Channel Selection and Mode Switching

Use the CH Up/Down buttons to select your desired channel. Press the AM/FM CB/WX button to switch between AM and FM modulation modes. The radio supports 40 channels.

Figure 7: Switching between AM and FM modes.

The MB63B offers 7 adjustable bands (CE, DE, IN, PL, IT, EU, UK) to find clear channels in congested areas. Refer to the menu for band selection.

Figure 8: Adjustable frequency bands.

4.4 Noise Reduction (NRC, ASQ, SQ)

The radio features advanced noise reduction technologies:

• NRC (Noise Reduction Circuit): Eliminates most ambient noise for clearer audio.
• ASQ (Automatic Squelch): Automatically mutes weak signals to reduce background noise. Adjust with the ASQ/SQ knob.
• SQ (Squelch): Manually adjust the squelch level to filter out noise.

Figure 9: Superior audio quality with noise reduction.

4.5 VOX Function (Voice Activated Transmission)

Activate the VOX function for hands-free communication. This allows you to transmit by speaking into the microphone without pressing the PTT button. Refer to the menu for VOX sensitivity adjustment.

4.6 Emergency Channels (CH9/19)

Press the EMG button for instant access to emergency channels CH9 (emergency) and CH19 (road information). This is crucial for safety and receiving critical information on the road.

Figure 10: Instant access to emergency channels.

4.7 CTCSS/DCS Tones

The CTCSS/DCS function allows for group communication without interference from other users on the same channel. This is ideal for fleet management. Configure these tones through the radio's menu.

Figure 11: CTCSS/DCS for interference-free communication.

4.8 Display and Backlight

The TFT color display provides clear information. The backlight and contrast are adjustable to ensure optimal visibility day or night. Access these settings through the menu.

Figure 12: Clear display and compact design.

5. Maintenance

5.1 General Care

Keep the radio clean and free from dust and moisture. Use a soft, dry cloth for cleaning. Avoid using harsh chemicals or abrasive cleaners.

5.2 Thermal Management

The MB63B features a large heatsink to maximize heat dissipation during long transmissions. Ensure the heatsink area is not obstructed to maintain optimal performance and prevent overheating.

Figure 13: Thermal management system.

6. Troubleshooting

If you encounter issues with your Retevis MB63B CB radio, refer to the following common problems and solutions:

If the problem persists, please contact Retevis customer support.

7. Specifications

8. Warranty and Support

8.1 Warranty Information

Retevis provides a 2-year warranty for the radio casing and a 1-year warranty for accessories. A 30-day return policy is also offered. Beyond the warranty period, maintenance services are available, with buyers responsible for associated costs.

8.2 Customer Support

For any questions or support needs, please contact Retevis customer service through Amazon. Responses are typically provided within 12 hours.