1. Introdución
The ALFA Network UBDO-NT8 is a high-performance, long-range outdoor USB WiFi CPE (Customer Premises Equipment) designed to provide robust wireless connectivity. Featuring an integrated 12 dBi 2.4 GHz panel antenna and an 8-meter USB cable, this device is ideal for extending your wireless network range and accessing distant Wi-Fi signals. It supports IEEE 802.11n, 802.11g, and 802.11b standards, offering data transfer speeds up to 150 Mbps. The UBDO-NT8 is compatible with various operating systems, including Windows, Mac, and Linux, and includes a user-friendly utility for network scanning and management.
2. Contido do paquete
Verifique que todos os artigos que se indican a continuación estean incluídos no seu paquete. Se falta algún artigo ou está danado, póñase en contacto co seu vendedor.

Figura 2.1: ALFA Network UBDO-NT8 and its accessories. The image displays the main white rectangular UBDO-NT8 unit, a coiled black USB cable, two metal mounting clamps, and a driver CD labeled "ALFA UBDo User Manual & User Guide Driver".
- ALFA Network UBDO-NT8 USB WiFi CPE Unit
- 8-meter USB Cable
- Mounting Kit (typically includes two metal clamps)
- Driver and Utility CD (User Manual & User Guide Driver)
3. Configuración e instalación
Follow these steps to set up your ALFA Network UBDO-NT8 adapter:
- Instalación de controladores: Before connecting the UBDO-NT8, insert the provided Driver and Utility CD into your computer's CD/DVD drive. Follow the on-screen instructions to install the necessary drivers and the network scanning utility. If your computer does not have a CD/DVD drive, drivers can typically be downloaded from the official ALFA Network support websitio.
- Colocación física: The UBDO-NT8 is designed for outdoor use. Choose a location with a clear line of sight to the desired Wi-Fi source. Mount the unit securely using the provided mounting kit. Ensure the unit is positioned to minimize obstructions between it and the target Wi-Fi signal.
- Conectar o cable USB: Connect one end of the 8-meter USB cable to the USB port on the UBDO-NT8 unit. Carefully route the cable to your computer, ensuring it is protected from environmental elements and physical damage.
- Conectar ao ordenador: Plug the other end of the USB cable into an available USB port on your laptop or desktop computer. The device is powered via the USB connection.
- Recoñecemento do sistema: Your operating system should detect the new hardware and complete the driver installation. A notification may appear indicating that the device is ready for use.
Nota: For optimal performance, ensure your computer's USB port provides sufficient power (DC 5V ± 5%).
4. Instrucións de funcionamento
Once the UBDO-NT8 is installed, you can use the included utility or your operating system's network manager to connect to Wi-Fi networks.
4.1 Using the ALFA Network Utility
- Launch Utility: Open the ALFA Network utility from your desktop shortcut or Start Menu.
- Busca de redes: Within the utility, locate and click the "Scan" or "Site Survey" button to display a list of available wireless networks.
- Seleccione Rede: Choose the desired network from the list. The utility will show signal strength, security type, and channel.
- Conectar: Click "Connect" and enter the network's security key (WEP, WPA, WPA2) if prompted. The utility allows you to save preferred networks for easier reconnection.
- Conexión de monitor: The utility provides real-time information on your connection status, signal quality, and data transfer rates.
4.2 Using Operating System Network Manager
Alternatively, you can use your operating system's built-in Wi-Fi manager:
- Windows: Click the network icon in the system tray, select the desired network, and click "Connect". Enter the security key if required.
- macOS: Click the Wi-Fi icon in the menu bar, select the network, and enter the password.
- Linux: Use your distribution's network manager (e.g., NetworkManager, Wicd) to scan and connect to networks.
5. Especificacións técnicas
| Característica | Especificación |
|---|---|
| Modelo | UBDO-NT8 |
| Estándares sen fíos | IEEE 802.11n, 802.11g, 802.11b |
| USB estándar | USB v1.0/1.1/2.0 |
| Taxa de transferencia de datos | 802.11n: ata 150 Mbps 802.11g: Up to 54 Mbps 802.11b: Up to 11 Mbps |
| Tipo de antena | Integrated 12 dBi 2.4 GHz Panel Antenna |
| Frequency Range (USA/Canada) | 2.411 GHz ~ 2.462 GHz (CH1 ~ CH11) |
| Frequency Range (EU) | 2.412 GHz ~ 2.472 GHz (CH1 ~ CH13) |
| Frequency Range (Japan) | 2.412 GHz ~ 2.484 GHz (CH1 ~ CH14) |
| Potencia de saída | 32 dBm ± 2 dBm |
| Sensibilidade do receptor (típico) | 802.11n: -73dBm @ HT20, -66dBm @ HT40 802.11g: -76dBm @ 54 Mbps 802.11b: -92dBm @ 11Mbps |
| Seguridade | WEP 64/128 bits, WPA, WPA2, TKIP, AES |
| Soporte do sistema operativo | Windows 2000/XP/Vista/7, Apple Mac, Linux |
| Vol. Operativotage | DC 5V ± 5% (via USB) |
| Temperatura de funcionamento | 0 °C ~ +50 °C (32 °F ~ 122 °F) |
| Temperatura de almacenamento | -10 °C ~ +65 °C (14 °F ~ 149 °F) |
| Lonxitude do cable USB | 8 metros |
6 Solución de problemas
If you encounter issues with your ALFA Network UBDO-NT8, refer to the following common problems and solutions:
- Dispositivo non detectado:
- Ensure the USB cable is securely connected to both the UBDO-NT8 and your computer.
- Proba a conectarte a un porto USB diferente do teu ordenador.
- Verifique que os controladores estean instalados correctamente. Reinstaleos se é necesario.
- Check Device Manager (Windows) or System Information (Mac/Linux) to see if the device is listed without errors.
- Non se pode conectar á rede wifi:
- Confirm you are entering the correct Wi-Fi password/security key.
- Ensure the network is within range and has sufficient signal strength.
- Check if the network uses a supported security protocol (WEP, WPA, WPA2).
- Restart your computer and the UBDO-NT8.
- Velocidade de conexión lenta:
- Ensure the UBDO-NT8 has a clear line of sight to the access point. Obstructions can significantly degrade performance.
- Check for interference from other 2.4 GHz devices (e.g., cordless phones, microwaves).
- Update the device drivers to the latest version from the ALFA Network websitio.
- Verify that your computer's USB port is USB 2.0 compatible for optimal speed.
- Conexión intermitente:
- Relocate the UBDO-NT8 to a more stable position with better signal reception.
- Check the USB cable for any damage or kinks.
- Ensure the USB connection is not loose.
7. Mantemento
To ensure the longevity and optimal performance of your ALFA Network UBDO-NT8, follow these maintenance guidelines:
- Limpeza: Periodically clean the exterior of the unit with a soft, dry cloth. Do not use liquid cleaners or aerosols.
- Coidado do cable: Inspect the 8-meter USB cable regularly for any signs of wear, cuts, or damage. Replace if necessary to prevent connectivity issues or electrical hazards.
- Protección ambiental: Although designed for outdoor use, avoid exposing the unit to extreme weather conditions beyond its specified operating temperature range. Ensure proper sealing of all connections if exposed to moisture.
- Actualizacións de firmware: Check the ALFA Network official website periodically for firmware updates. Keeping the firmware updated can improve performance and security.
8. Garantía e soporte
ALFA Network products typically come with a limited warranty. Please refer to the warranty card included with your product or visit the official ALFA Network websitio web para obter termos e condicións de garantía detallados específicos da súa rexión.
For technical support, driver downloads, or further assistance, please visit the ALFA Network support portal:
ALFA Network Official Support Websitio
When contacting support, please have your product model (UBDO-NT8) and serial number (if applicable) ready.





