Manufacturer ALFA Network
Availability In stock

ALFA Network Tube-U4G Outdoor 4G/LTE USB Modem with antenna

The Tube-U4G from ALFA is an Outdoor LTE dongle and supports up to 100Mbps download and up to 50Mbps upload in the 4G/LTE network. Also backwards compatible with UMTS/EDGE/GPRS and usable with other 4G antennas with N-Male antenna connector. Thanks to IP66 weatherproof.
74,99 € incl tax
Delivery time: sofort lieferbar

4G/LTE Outdoor Surfstick with a high gain antenna

The ALFA Network Tube-U4G is a weather-proof LTE USB adapter for connection to a Windows PC/laptop or the ALFA Network R36. The Tube-U4G in combination with the included N-Male LTE antenna provides excellent reception characteristics to allow you to connect to the mobile network anywhere.Since the Tube-U4G offers an outdoor housing according to protection class IP66, you can position the tube outside in a sublime place, such as on a camper/caravan or on the deck of a boat. At the bottom of the tube is a mini-USB port and the slot for a standard 6-pin SIM card, both protected from environmental influences by a weather-proof cap with cable entry.

Cable ties are included for easy mounting. With these you can attach the Tube-U4G to a mast. This fastening method is simplified by the tabs on the edge of the housing of the tube. If no mast is available, then an ALFA TSM1 adapter or a suction lifter are very good possibilities of fastening.

ALFA Network Tube-U4G LTE Outdoor Surfstick

Tube-U4G with one PC/Laptop

ALFA Tube-U4G als LTE-Surfstick

If you use the ALFA Tube-U4G as an LTE USB adapter, you can use it toconnect with one Windows PC or laptop with very good mobile internet. In the LTE network, up to 100 Mbps download and 50 Mbps data rate can be achieved. To use the Tube-U4G as a LTE USB Adapter you only have to connect it to your Windows PC or laptop using the included 5m long USB cable. The driver is installed automatically and you can use the mobile Internet connection immediately.

Tube-U4G with the ALFA R36 as an extender

In combination with the Tube-U4G, the ALFA R36 router can be used as an LTE/UMTS WiFi router. The Tube-U4G is connected via the USB cable to the ALFA R36, which uses the mobile Internet connection of the Tube to provide its own WiFi. You can connect with the R36 with all your devices.

Note: The official firmware of the R36, which is required for use with the Tube-U4G, is not compatible with the ALFA Tube-U(N). There is a beta firmware that is compatible with the Tube-U(N) as well as the Tube-U4G and is currently still in the test phase to excludes possible bugs. This means that the Tube-U4G and the Tube-U(N) can be operated alternately with the beta firmware. To do this, only the device connected to the R36 needs to be changed and the configuration must be adapted accordingly.

R36 3G Extender

Technical Details

Model Tube-U4G
Broadband Wireless LTE/HSPA
Frequency FDD-LTE B1 (2100MHz)/B3 (1800MHZ/B7 (2600MHZ))
B2 (800MHZ)
WCDMA/UMTS B1 (2100MHz)/B8 (900 MHz)
GSM Quad band (850/900/1800/1900 MHz)
Data Rate FDD-LTE R8 cat. 3 100MBit/s Download/50MBit/s Upload
WCDMA/UMTS R99 384kbps Download/Upload
R5 HSDPA 7,2MBit/S Download
R6 HSUPA 5,76 MBit/S Upload
R7 HSPA+ 21MBit/s Download/5,76 MBit/s Upload
R8 HSPA+ 42MBits/s Download/5,76MBit/s Upload
Interface 1 x Mini USB (2.0)
Standard 6 PIN SIM card
Antenna Connector N-Female
Antenna High-gain 4G/LTE Omni Antenna
Led Indicator Power On/Off
Waterproof IP rate IP66
Operation System Support Windows Vista, 7, 8, 8.1, 10 32/64bit über Auto-Install Dienstprogramm Treiber
Mac, Linux, iPad, iPhone and Smartphones: only in combination with the ALFA R36
Temperature Operation 0ºC - 45ºC
Humidity Storage 5% - 98% (Non-condensing)
Dimensions (185 x 47 x 47) mm
Weight 135 g

Scope of Delivery

  • Tube-U4G
  • 4G Antenna
  • 5m USB 2.0 Cable
  • Cable ties
  • Quick Installation Guide


The transmission power of the hardware is to be set in accordance with the legal regulations in your country. For Germany and the EU for 2.4 GHz wireless devices with antenna a maximum EIRP of 100mW or 20dBm as limit. Please use the device in Germany only with the countries Zone ETSI or the regional setting for Germany to ensure compliance with the limits.
--->More Information

Antenna Connector N (Female)
Antenna Type Omni
Weatherproof yes
Support OS Windows 10
Support OS Windows 8
Support OS Windows 7
Support OS Windows Vista

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