1. Introduction
The Retevis L61/L51 Network Radio is a professional-grade Push-to-Talk over Cellular (POC) device designed for seamless communication across vast distances. Utilizing 2G and 4G cellular networks, these radios offer unlimited talking range, making them ideal for logistics, security, outdoor activities, and more. This manual provides essential information for setting up, operating, and maintaining your device.
Please note that the L61 is the European version, while the L51 is designed for Southeast Asian countries or regions. Key differences include SIM card support and specific features like Sound Effect (L61) and Recording Playback (L51).
2. Package Contents
Upon opening your Retevis L61/L51 Network Radio package, please verify that all items listed below are present and in good condition:
- 1x L51 or L61 Network Radio
- 1x Belt Clip
- 1x Sling
- 1x Charging Line (USB Type-C)
- 1x Li-ion Battery
- 1x User Manual
Figure 1: Package Contents for Retevis L61/L51 Network Radio
Figure 2: L61 European Version Package
Figure 3: L51 Southeast Asia Version Package
3. Product Features Overview
The Retevis L61/L51 Network Radio offers a robust set of features for reliable and efficient communication:
- Network Connectivity: Supports 2G/4G networks for unlimited talking range.
- GPS Function: Includes real-time location tracking and Geo-fencing alarms.
- Multiple Call Methods: Private call, Group call, and Friend call options.
- SOS Alarm: Dedicated function for emergencies.
- Over-the-Air Edition: Allows wireless programming and function setting.
- Compact Design: Portable size for easy carrying.
- Long-lasting Battery: 2500mAh high-capacity battery.
- USB Type-C Charging: Convenient charging via Type-C port.
- SIM Card Support: L61 supports dual SIM cards, L51 supports single SIM card.
- Sound Effect (L61 only): Adjustable call priority for emergency situations.
- Recording Playback (L51 only): Voice record function to review past conversations.
Video 1: Retevis L61 Network Radio Overview, showcasing its features and applications.
4. Setup Guide
4.1. Battery Installation
- Ensure the radio is powered off.
- Locate the battery compartment cover on the back of the radio.
- Gently slide or unlatch the cover to open it.
- Insert the Li-ion battery, ensuring the contacts align correctly with the terminals inside the compartment.
- Replace the battery compartment cover and secure it.
4.2. SIM Card Insertion
The L61 (European version) supports dual SIM cards, while the L51 (Southeast Asia version) supports a single SIM card.
- Ensure the radio is powered off and the battery is removed.
- Locate the SIM card slot(s) within the battery compartment.
- Insert your activated cellular SIM card(s) into the designated slot(s) with the metal contacts facing down, following any directional indicators.
- Reinstall the battery and battery cover.
4.3. Initial Charging
Before first use, fully charge the radio's battery.
- Connect the provided USB Type-C charging cable to the radio's charging port.
- Connect the other end of the cable to a compatible USB power adapter (not included) or a computer's USB port.
- The charging indicator on the radio will show charging status. Once fully charged, the indicator will change (refer to device display for specifics).
4.4. Account Setup
To use the network radio's communication features, an account needs to be activated on the management platform.
- After purchasing the device, send your order details to the seller's support team.
- Provide your preferred account name and a custom password.
- The seller will activate your account and provide a step-by-step setup guide via email or live support.
5. Operating Instructions
5.1. Power On/Off
- Power On: Long press the power button until the screen illuminates and the device initializes.
- Power Off: Long press the power button until a power-off prompt appears, then confirm.
5.2. Push-to-Talk (PTT) Function
The PTT button is located on the side of the radio.
- To Transmit: Press and hold the PTT button. Speak clearly into the microphone.
- To Receive: Release the PTT button to listen to incoming transmissions.
5.3. Volume Adjustment
Adjust the volume to a comfortable listening level using the dedicated volume controls or menu options.
5.4. Call Functions
The radio supports various call types to meet different communication needs:
- Single Call: Direct communication with a specific individual.
- Group Call: Broadcast communication to all members within a pre-defined group.
- Friend Call: Communication with contacts added to your 'Friend' list.
Navigate through the radio's menu to select the desired call type and recipient(s).
Figure 4: Single/Group/Friend Call Functionality
5.5. GPS Functionality
The integrated GPS allows for location tracking and safety features:
- GPS Location: View the real-time location of team members on the management platform.
- Geo-fencing Alarm: Set virtual boundaries on the platform. If a device moves outside these boundaries, an alarm will be triggered, reminding users to return to a scheduled route or alerting supervisors to potential deviations.
Figure 5: GPS Location and Geo-fencing
5.6. SOS Alarm
In case of an emergency, activate the SOS alarm:
- Activation: Long press the designated side key (typically side key 2) to activate the SOS function. This will alert your team or pre-set contacts to your emergency.
Figure 6: SOS Alarm Activation
5.7. Over-the-Air (OTA) Edition
The OTA Edition feature allows for convenient wireless programming:
- Connect your 4G network walkie talkie to a computer wirelessly to set or modify functions without needing a physical cable. This allows for flexible management of radio settings from anywhere.
Figure 7: Over-the-Air Edition for Wireless Programming
5.8. Recording Playback (L51 Southeast Asia Version Only)
The L51 version includes a voice recording function:
- Access the recording playback feature through the radio's menu to listen to the last call record. This helps ensure important messages are not missed.
Figure 8: Recording Playback Function (L51 Only)
5.9. Sound Effect (L61 European Version Only)
The L61 version allows for sound effect adjustments:
- Set and change the call priority through the sound effect settings to ensure instant communication, especially in emergency situations.
Figure 9: Sound Effect Feature (L61 Only)
6. Maintenance
- Cleaning: Use a soft, damp cloth to clean the radio's exterior. Avoid harsh chemicals or abrasive cleaners.
- Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Store the radio and battery in a cool, dry place away from extreme temperatures.
- Storage: If storing the radio for an extended period, remove the battery and store it separately.
- Avoid Water: The radio is not waterproof/water-resistant. Keep it away from water and moisture.
7. Troubleshooting
- No Communication/Signal:
- Ensure your SIM card is properly inserted and activated.
- Check for cellular network coverage in your current location.
- Verify that your account on the management platform is active.
- GPS Location Issues:
- Ensure the radio has a clear view of the sky for optimal GPS signal reception.
- Check if the GPS function is enabled in the radio's settings.
- Short Battery Life:
- Ensure the battery is fully charged before use.
- Check for any background applications or settings that might be consuming excessive power.
- Consider replacing the battery if it's old or shows significant degradation.
- Account Setup Problems:
- If you encounter issues during account setup, contact the seller's support team with your order details for assistance.
- Zello/Wi-Fi Connectivity:
- The Retevis L61/L51 does not support the Zello app or Wi-Fi connectivity. It relies solely on 2G/4G cellular networks for communication.
8. Specifications
| Feature | Specification |
|---|---|
| Model Number | L61/L51 |
| Walkie Talkie Type | Portable |
| Output Power (W) | 3W-5W |
| Maximum Range | 10km-50km (Network Dependent) |
| Battery Capacity (mAh) | 2500MAH |
| Battery Included | Yes |
| Waterproof / Water-Resistant | No |
| Is_Display | Yes |
| Material | ABS |
| Use | Others (Professional/Personal Communication) |
| High-concerned chemical | None |
| Origin | Mainland China |
| Certification | CE, FCC |
| Dimensions (H*W*D) | 116 x 54.6 x 35.1mm |
| Working Time | 12 hours |
| Standby Time | 30 hours |
| L51 Asian Version Network Bands | LTE-FDD B1/B3/B5/B8/B34/B39, LTE-TDD B38/B40/B41 |
| L61 European Version Network Bands | LTE-FDD B1/B3/B7/B8/B20/B28, LTE-TDD B38/B40/B41, WCDMA B8, GSM 900/1800MHz |
9. User Tips
- SIM Card Recommendation: To optimize costs, we recommend purchasing a local SIM card. The device has extremely low data usage, typically a few KB per month.
- Unlimited Range: The device operates via LTE networks, ensuring communication without distance limitations wherever cellular signals are available.
- Enhanced Safety with GPS: Utilize the built-in GPS and Geo-fencing alerts to track team members and enhance safety by receiving notifications if devices move beyond set boundaries.
- Account Support: For account setup or any operational issues, contact our support team with your order details for a step-by-step guide and personalized assistance.
10. Warranty and Support
Retevis is committed to providing high-quality products and customer satisfaction. Your Retevis L61/L51 Network Radio is designed for durability and reliable performance. For any product-related inquiries, technical support, or assistance with your device, please contact the seller directly. They will be able to provide specific details regarding warranty coverage and service options.
