CRT SS 6900 VOX CB Radio Instruction Manual

1. Introduction

This manual provides comprehensive instructions for the operation, setup, and maintenance of your CRT SS 6900 VOX CB Radio. Please read this manual thoroughly before using the device to ensure proper functionality and safety.

2. Product Overview

The CRT SS 6900 VOX CB Radio is a versatile transceiver designed for various communication needs. Key features include:

• Multi-mode operation: AM, FM, USB, SSB, CW, PA.
• Frequency Range: 28-29.7 MHz.
• 60 programmable channels per band.
• Adjustable Automatic Squelch (ASQ).
• RF Gain control.
• Noise Blanker (NB) and Automatic Noise Limiter (ANL).
• Roger Beep function.
• 12V DC operation.
• Programmable via computer.

Front Panel Controls and Display

Figure 2.1: Front view of the CRT SS 6900 VOX CB Radio, showing the main display, control knobs, and connected microphone.

Figure 2.2: Close-up of the radio's front panel, highlighting the display, function buttons, and rotary controls for volume, squelch, RF gain, and mode selection.

Rear Panel Connections

Figure 2.3: Rear view of the CRT SS 6900 VOX CB Radio, showing the antenna connector, power input, CW key jack, data port, and external speaker jack.

3. What's in the Box

The product package includes the following items:

• CRT SS 6900 VOX CB Radio Transceiver
• Microphone
• Microphone Stand
• Mounting Bracket
• CB Radio Power Cord
• Cigarette Lighter Plug (for power cord)
• Mounting Accessories (screws, washers)

Figure 3.1: All components included in the CRT SS 6900 VOX CB Radio package, laid out for inspection.

4. Setup

4.1 Power Connection

The CRT SS 6900 VOX CB Radio operates on 12V DC. Connect the provided power cord to the "POWER" input on the rear panel of the radio. Ensure correct polarity (red to positive, black to negative). For vehicle installation, connect the power cord to your vehicle's 12V power source, ensuring it is properly fused.

Figure 4.1: The rear panel of the radio, indicating the power input port for connecting to a 12V DC source.

4.2 Antenna Connection

Connect a suitable CB antenna to the "ANT" connector on the rear panel of the radio. Ensure the antenna is properly tuned for the 28-29.7 MHz frequency range to prevent damage to the transceiver and optimize performance.

Figure 4.2: The rear panel of the radio, indicating the antenna connection port.

4.3 Microphone Connection

Connect the microphone's RJ45 connector to the corresponding port on the front panel of the radio. Ensure it clicks securely into place.

Figure 4.3: The front panel of the radio, showing the RJ45 port for microphone connection.

5. Operating Instructions

5.1 Power On/Off and Volume Control

Turn the VOL/SQ knob clockwise to power on the radio. Continue turning to adjust the listening volume. To power off, turn the knob counter-clockwise until it clicks.

5.2 Channel Selection

Use the BAND knob to select the desired frequency band (A, B, C, D, E, F). Rotate the CLARIFIER knob to select channels within the chosen band. The display will show the channel number and frequency.

5.3 Mode Selection (AM/FM/USB/SSB/CW/PA)

Press the MODE button to cycle through the available modulation modes: AM (Amplitude Modulation), FM (Frequency Modulation), USB (Upper Sideband), LSB (Lower Sideband), CW (Continuous Wave), and PA (Public Address).

Figure 5.1: Visual representation of the various modulation modes supported by the radio.

5.4 Squelch Control (SQ/ASQ)

The VOL/SQ knob also controls the squelch. Rotate it to adjust the squelch level, which mutes weak signals to reduce background noise. The Automatic Squelch (ASQ) function can be activated for automatic noise reduction.

5.5 RF Gain Control

Adjust the RF GAIN knob to control the receiver's sensitivity. This helps in reducing interference from strong nearby signals.

5.6 Noise Blanker (NB) and Automatic Noise Limiter (ANL)

Press the NB/ANL button to activate or deactivate the Noise Blanker and Automatic Noise Limiter functions. These features help to suppress impulse noise, such as ignition noise from vehicles.

5.7 Roger Beep

The Roger Beep function provides an audible tone at the end of your transmission, signaling to other users that you have finished speaking. Activate or deactivate this feature as desired.

5.8 Programmable Channels

The radio supports 60 programmable channels per band. Refer to the detailed programming guide (available separately or via software) for instructions on customizing these channels.

6. Maintenance

• Keep the radio clean and free from dust. Use a soft, dry cloth for cleaning.
• Avoid exposing the radio to extreme temperatures, direct sunlight, or moisture.
• Ensure all connections (power, antenna, microphone) are secure before operation.
• Regularly check the antenna's SWR (Standing Wave Ratio) to ensure optimal performance and prevent damage to the radio.

7. Troubleshooting

If you encounter issues with your CRT SS 6900 VOX CB Radio, consider the following:

• No Power: Check the power cord connection and ensure the vehicle's power source is active. Verify the fuse in the power cord is intact.
• No Reception/Transmission: Ensure the antenna is properly connected and tuned. Check the selected channel and mode. Adjust squelch and RF gain settings.
• Poor Audio Quality: Check microphone connection. Adjust volume and squelch. Ensure no strong interference is present.
• Display Issues: If the display is blank or erratic, try powering off and on again. If the issue persists, contact support.

8. Specifications

9. Warranty and Support

This product comes with a 2-year warranty. For any technical information or assistance, our team is available to assist you. Please refer to the contact information provided with your purchase or on the manufacturer's official website.

10. Regulatory Compliance

This product can be operated in CEPT countries and those non-CEPT countries that implement the CEPT regulation TR 61/01. Restriction: Use with an amateur radio license.

Figure 10.1: Information regarding CEPT country compliance and the requirement for an amateur radio license.