1. Introduction
The Inrico T522A is a professional-grade 4G LTE Push-to-Talk (PoC) radio designed for reliable and efficient communication. Running on Android Go, it offers advanced features such as GPS positioning, Wi-Fi, and Bluetooth connectivity. Its rugged and waterproof design (IP54 rated) ensures durability in various environments, making it suitable for a wide range of applications including shipping dispatch, traffic guidance, airport operations, and railway communications.
Figure 1: Front view of the Inrico T522A PoC Radio.
Video 1: Overview of Inrico T522A features and application scenarios.
2. Package Contents
Please check the box for the following items:
- Battery x1
- User's Manual x1
- Sling x1
- Adaptor x1
- Belt Clip x1
- Antenna x1
- Sticker x1
- Screws x4
- Desktop Charger x1
- Power Cable x1
Figure 2: All items included in the Inrico T522A product package.
3. Device Overview
Familiarize yourself with the various parts and controls of your Inrico T522A radio.
Figure 3: Front and side view of the radio with key components labeled.
Figure 4: Side and back view of the radio with additional components labeled.
4. Setup
4.1. Battery Installation
- Ensure the radio is powered off.
- Locate the battery compartment on the back of the radio.
- Align the battery with the compartment and gently push it in until it clicks into place.
- Secure the battery cover if applicable.
4.2. SIM Card Installation
- Remove the battery as described above.
- Locate the SIM card slot (refer to Figure 5).
- Insert a standard SIM card into the slot with the gold contacts facing down and the notched corner aligned correctly.
- Reinstall the battery.
Figure 5: Back of the radio with battery removed, illustrating the SIM card slot.
4.3. Charging the Battery
Before first use, fully charge the battery. The radio can be charged using the provided desktop charger and power cable.
- Connect the power cable to the adaptor, and then to the desktop charger.
- Plug the adaptor into a power outlet.
- Place the radio into the desktop charger, ensuring the charging contacts align. The indicator light on the charger will show the charging status.
Figure 6: Inrico T522A radios in their desktop chargers.
4.4. Initial Power On
To power on the radio, rotate the Power/Volume knob clockwise until you hear a click and the device starts up. To power off, rotate the knob counter-clockwise until it clicks.
5. Operating Instructions
5.1. Basic Communication (Push-to-Talk - PTT)
- Ensure the radio is powered on and connected to the network.
- Select the desired communication channel using the Channel switch.
- To transmit, press and hold the PTT button (located on the side of the radio). Speak clearly into the microphone.
- Release the PTT button to listen for a response.
5.2. Volume Adjustment
Rotate the Power/Volume knob to adjust the speaker volume. Clockwise increases volume, counter-clockwise decreases volume.
5.3. Network Connectivity
The T522A supports 4G LTE and Wi-Fi for network communication. Ensure your SIM card has an active data plan or connect to a stable Wi-Fi network for optimal performance.
5.4. GPS Positioning
The integrated GPS and AGPS system provides accurate location tracking. This feature is crucial for dispatch systems and team coordination.
Figure 7: The radio's GPS positioning system in action, showing team member locations on a map.
5.5. Bluetooth Connectivity
The radio supports Bluetooth 4.2 for connecting accessories such as headsets. Refer to the Android Go operating system settings for pairing instructions.
6. Maintenance
6.1. Cleaning
- Use a soft, damp cloth to clean the exterior of the radio.
- Do not use harsh chemicals or abrasive cleaners.
- Ensure all ports are dry before use.
6.2. Battery Care
- Avoid fully discharging the battery frequently.
- Charge the battery in a well-ventilated area.
- If storing the radio for an extended period, charge the battery to about 50% and remove it from the device.
6.3. Storage
Store the radio in a cool, dry place away from direct sunlight and extreme temperatures.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Radio does not power on | Battery is dead or not installed correctly. | Charge the battery or re-install it correctly. |
| No network connection | SIM card not installed, no data plan, or out of network coverage. | Check SIM card, ensure active data plan, move to an area with better coverage, or connect to Wi-Fi. |
| Poor audio quality | Low volume, weak network signal, or microphone/speaker obstruction. | Adjust volume, check network signal, ensure microphone/speaker are clear. |
| GPS not working | Poor satellite signal (indoors/underground) or GPS disabled. | Move to an open area, check GPS settings in Android Go. |
8. Specifications
| Feature | Description |
|---|---|
| Product Name | 4G LTE zello network radio ptt walkie talkie GPS WIFI Bluetooth poc radio android walkie talkie Inrico T522A |
| Model | T522A |
| EU Version Frequencies | GSM: B2/B3/B5/B8; WCDMA: B1/B2/B5/B8; TDD-LTE: B38/B39/B40/B41; FDD-LTE: B1/B3/B5/B7/B8/B20/B28a/B28b |
| US Version Frequencies | GSM: B2/B5; WCDMA: B1/B5/B8; FDD-LTE: B1/B2/B4/B5/B7/B12/B13/B17/B28a/B28b |
| Maximum Transmission Power | 32.5db |
| Receive Sensitivity | -107dBm |
| Wi-Fi | IEEE 802.11 a/b/g/n |
| Bluetooth | BT4.2 |
| Locations | GPS, AGPS |
| CPU | MT6739, 1.28GHz |
| Memory | 1G+ 8G ROM |
| SIM card slot | Standard SIM card |
| USB Ports | Micro USB 2.0 |
| Interface | (3.5mm+2.5mm)/M6 |
| Speaker | Ø40mm speaker, 8Ω 2W |
| Battery | 4000mAh |
| Communication Times | 18 Hours |
| Standby Times | 22 Hours |
| Operation System | Android Go |
| Dimension (H*W*D) | 145 x 64 x 35mm (Without Belt clip and Antenna) |
| Weight | ≈310g |
| Working Temperature | -20°C ~ 55°C |
| Storage Temperature | -20°C ~ 70°C |
| Protection Level | IP54 |
| Drop Resistance | 1.2 Meters |
| Certifications | CE/FCC/ROHS/UN38.3/MSDS/IEC62133 |
9. User Tips
- Network Compatibility: Before purchasing or using in a new region, verify that the radio's frequency bands (EU or US version) are compatible with local 4G LTE networks. This is crucial for ensuring proper functionality.
- Zello Application: For Push-to-Talk over Cellular (PoC) functionality, ensure the Zello application (or your preferred PoC client) is correctly installed and configured on the Android Go operating system.
- Battery Life: While the radio offers long communication and standby times, heavy usage of GPS, Wi-Fi, or continuous PTT can reduce battery life. Consider carrying a spare battery or portable charger for extended operations.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the documentation provided by your retailer or contact the manufacturer directly. Keep your proof of purchase for warranty claims.
