1. Introduction
Congratulations on your purchase of the Radtel CB-10 Handheld Walkie Talkie. This device is a 27MHz CB radio HAM transceiver designed for reliable communication. Featuring 4W output power, AM/FM modulation, and a 4100mAh battery, it is suitable for various applications including truck communication, outdoor activities, and construction sites.
Please read this manual carefully to ensure proper operation and to get the most out of your CB-10 radio.
2. Safety Information
- Never open the case of your device. There are no user-serviceable parts inside.
- Do not change or replace anything in your device. Unauthorized modifications could void your right to operate this unit and may be illegal.
- Your device may cause interference with TVs or radios. If interference occurs, try moving your communicator away from the receiver. If interference cannot be eliminated, please stop using the device.
- This device transmits a regulated signal on an assigned frequency. It is against the law to alter or adjust the settings inside the communicator to exceed those limitations. Any adjustments must be made by qualified technicians.
3. Package Contents
Upon unpacking, please ensure all items listed below are present and in good condition:
- Radtel CB-10 Handheld Walkie Talkie
- Battery (Lithium or Dry Battery option)
- Antenna
- Adapter
- Drop-in Charging Tray
- Belt Clip
- Handstrap
- User Manual (PDF version available at PDF User Manual)
4. Product Overview
4.1. Controls and Display
- FM Knob:
- Rotate to adjust frequency or navigate menus.
- Power Volume Knob:
- Rotate clockwise to switch ON the transceiver and adjust volume. Rotate counter-clockwise to switch OFF.
- LED Indicator:
- Lights continuously red when transmitting, and green when receiving.
- Display:
- TFT LCD display showing frequency, channel, signal strength, battery status, and other operational information.
- AM/FM Key:
- Press briefly to select AM/FM modulation. Press and hold for a long time to open the power display screen, and turn the encoder to adjust the power display (show picture switch ON/OFF).
- SCN (Scan) Key:
- Press briefly to enter scanning mode. Press and hold for 2 seconds to add or delete the current channel from the scan list.
- EMG (Emergency) Key:
- Quick channel selection. The shortcut channel can be set by writing frequency software.
- MEM (Memory) Key:
- Selection of regular channel group and memory channel group. Memory channels can be set by writing frequency software.
- FUN Key:
- Press briefly to enter the menu mode. Press and hold to enter the initialization menu (RESET: OPT/ALL). Long press and hold to open the power to enter the group frequency selection (EU Band, CE Band, U Band, PL Band, I2 Band, DE Band).
- OK Key:
- Press to select the key to confirm or exit. Press and hold to turn off the screen and keyboard lights.
- EXIT Key:
- Press briefly to exit the current selection. Long press to open or lock the keyboard.
5. Setup
5.1. Battery Installation
The Radtel CB-10 supports two battery options: a Lithium battery or a Dry battery pack.
- Ensure the radio is turned off.
- Open the battery compartment cover on the back of the radio.
- Insert the chosen battery pack, ensuring correct polarity if using the dry battery option.
- Close the battery compartment cover securely.
5.2. Antenna Attachment
Screw the provided antenna clockwise into the antenna connector on top of the radio until it is finger-tight. Do not overtighten.
5.3. Charging the Battery
If using the Lithium battery, charge it using the provided drop-in charging tray and adapter.
- Connect the adapter to the charging tray and plug it into a power outlet.
- Place the radio with the Lithium battery installed into the charging tray.
- The charging indicator on the tray will show the charging status. Charge until the battery is full.
6. Operation
6.1. Power On/Off and Volume
Rotate the Power Volume Knob clockwise to turn the radio ON. Continue rotating to adjust the listening volume. Rotate counter-clockwise until it clicks to turn the radio OFF.
6.2. Channel Selection
The Radtel CB-10 supports 40 CB channels. You can select channels using the FM Knob or by entering the FUN menu to select specific frequency bands (EU, CE, U, PL, I2, DE).
6.3. Transmitting and Receiving
- To Transmit: Press and hold the PTT (Push-To-Talk) button on the side of the radio. Speak clearly into the microphone. The LED indicator will light red.
- To Receive: Release the PTT button. The LED indicator will light green when a signal is being received.
6.4. Modulation Mode (AM/FM)
Press the AM/FM key to switch between Amplitude Modulation (AM) and Frequency Modulation (FM) modes. CTCSS/PL tones are available in FM mode.
6.5. Squelch Function
The radio features an automatic squelch function and adjustable squelch level to suppress background noise when no signal is present. Refer to the menu settings (accessed via FUN key) to adjust the squelch level.
6.6. Channel Scan
Press the SCN key briefly to activate channel scanning. The radio will cycle through channels to detect activity. Press SCN again to stop scanning. To add or remove a channel from the scan list, long press the SCN key for 2 seconds on the desired channel.
6.7. Keyboard Lock
To prevent accidental key presses, long press the EXIT key to lock the keyboard. Long press it again to unlock.
6.8. Emergency (EMG) and Memory (MEM) Functions
The EMG key provides quick access to emergency channels, while the MEM key allows selection from stored memory channels. These functions can be configured using frequency writing software.
6.9. Torch Function
Press the FUN key to activate the built-in torch light.
7. Maintenance
7.1. Battery Care
- Always use the specified charger and battery type.
- Do not expose batteries to extreme temperatures or dispose of them in fire.
- If the radio is not used for an extended period, remove the batteries.
7.2. Cleaning
Wipe the radio with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners.
8. Troubleshooting Guide
| Problem | Possible Cause | Solution |
|---|---|---|
| No Power | Battery not installed correctly or depleted. | Check battery installation and/or replace batteries. If battery life is over, replace with a new one. |
| Cannot communicate with other group members | Incorrect channel frequency or CTCSS/DCS settings; out of radio range. | Verify that the channel frequency and CTCSS/DCS are the same as other group members. Ensure all members are within the radio's effective range. |
| Hearing voices from other groups | CTCSS/DCS not set or set incorrectly; shared channel. | Change your CTCSS/DCS for the channel. Ensure all radios in your group use the same CTCSS/DCS. Alternatively, select another channel frequency. |
| Radio won't turn on or shuts off automatically | Loose or broken battery contacts. | Check the battery contacts on the radio. If they are broken or twisted, contact your authorized dealer for maintenance. |
9. Specifications
| General | |
|---|---|
| Modulation Mode | AM/FM |
| Frequency Range | 26.965-27.405MHz (CB channels) |
| Frequency Tolerance | ±5.0ppm |
| Input Voltage | 12V |
| Dimensions (W x D x H) | 165mm x 67mm x 44mm |
| Weight | Approx. 444.5g |
| Frequency Control | PLL Synthesizer |
| Operating Temperature Range | -20°C to +55°C |
| Antenna Connector | UHF, SO-239 |
| Waterproof / Water-Resistant | IP57 |
| Storage Channel | 40 |
| Display | Yes |
| Material | Plastic |
| Maximum Range | 3km-5km |
| Battery Capacity | 4100mAh |
| Certification | NONE |
| Receiver | |
| Sensitivity | Less than 1uV for 10dB(S+N)/N |
| Image Rejection | 70dB |
| Adjacent Channel Rejection | 60dB |
| IF Frequencies | 1st 10.695MHz, 2nd 455KHz |
| Automatic Gain Control (AGC) | Less than 10dB change in audio |
| Squelch | Less than 1uV |
| Audio Output Power | 3 watts into 8 ohms |
| Frequency Response | 300-3000Hz |
| Transmitter | |
| Power Output | 4 Watts FM/AM |
| Transmission Interference | Inferior to 4nW (-54dBm) |
| Frequency Response | 300-3000Hz |
| Modulated Signal Distortion | Inferior to 5% |
| Output Impedance | 50 ohms |
10. User Tips
- CTCSS/DCS for Privacy: To avoid hearing other groups or to ensure privacy within your group, utilize the CTCSS/PL tone feature available in FM mode. Ensure all radios in your group are set to the same CTCSS/DCS code.
- Channel Regulations: Be aware that CB channel usage and available frequencies can vary by country. The 27MHz frequency used will vary depending on your region. Always adhere to local telecommunication regulations. The radio offers different band selections (EU, CE, U, PL, I2, DE) which can be accessed via the FUN key.
- Battery Options: The Radtel CB-10 offers flexibility with battery choices. You can use the included Lithium battery for rechargeable convenience or a dry battery pack for situations where recharging may not be readily available.
11. Warranty and Support
11.1. Warranty Information
The Radtel CB-10 comes with a one-year limited warranty from the date of purchase. Please retain your warranty card as proof for repair. The warranty card is valid with the stamp and date and must not be altered. Ensure the card number and machine number match.
The warranty covers defective parts of the main unit. Accessories such as the charger, battery, earphone, antenna, and programming cable are not covered under this warranty.
11.2. Obtaining Service
For warranty service or repairs, you can send the machine to the original purchase site or an authorized maintenance center. Please refer to the contact information provided by your dealer.
For further assistance, you may also refer to the comprehensive User Manual available in PDF format: Radtel CB-10 User Manual (PDF).