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SierraWireless AirCard 250U Signal Boosters

Improving the cellular reception to your Sierra Wireless 250U cellular modem USB card can mean faster speeds. In general, the better the cell signal, the faster the data transmission speed.

We offer several options to improve the cellular reception of your Sierra Wireless 250U mobile broadband device. Choose from simply attaching an external antenna directly to the mobile device, add an cellular amplifier or select a wireless amplifier to improve reception without a physical connections to your device.

  • Add an External Antenna
  • Add a Direct Connect Signal Booster
  • Repeater System - Cover a room or a whole building.

Adapter Ports

The Sierra Wireless 250U has 2 external antenna ports located on it's side. One is for 3G network and the other is for 4G network. The port closest to the front is the 4G port and the port closest to the back is the 3G/4G port.

3G & 4G Antennas

To attach an external antenna directly to the 250u, you will need an antenna adapter (AA359927) listed below. Most dual band (800MHz / 1900MHz) antennas will cover 3G networks. For 4G WiMAX, we would recommend an antenna that covers 2500MHz frequency range as well such as the Wilson Wide Band Log Per Directional Antenna or Wilson Panel Antennas.

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  • External Antenna Adapter
    SierraWireless 250u / Clear 4G Mobile USB S Antenna Adapter FME M $12.95 View Details
    External antenna adapter. Fits Sierra Wireless 250U, Clear 4G+ Mobile USB Series S and many other device. Sierra Wireless 250u Antenna Adapter / Clear 4G+ Mobile USB Series S Antenna Adapter External antenna adapter for...
    SKU: AA359927CL250u
  • SierraWireless 597/885/N727/760/P175 Wilson 3db DualBand Antenna Kit
    SierraWireless 597/885/N727/760/P175 Wilson 3db DualBand Antenna Kit $36.95 $34.95 View Details
    External Antenna Kit for Merlin Novatel U727, USB760, Pantech UM175, Sierra Wireless 319u, 597u, 727usb, 885, Compass. Improve the reception of your cell phone or mobile broadband card. Kit includes Wilson dual band,...
    SKU: AKWDB359927
  • SierraWireless Sprint 250U 3G/4G Ext Antenna/Adapter Kit
    SierraWireless Sprint 250U 3G/4G Ext Antenna/Adapter Kit $34.95 View Details
    Sierra Wireless Sprint 250U External Antenna Kit includes Cellular Antenna and Antenna Adapter. Comes with Wilson's dual band, magnetic mount antenna and external antenna adapter. Use to attach an external antenna directly...
    SKU: AK359927SW50u
  • 1 Ft USB Extension Cable - AM / AF
    1 Ft USB Extension Cable - AM / AF $2.95 View Details
    1 Foot USB 2.0 High Speed Extension Cable General Features: Standard USB extension cable USB 2.0 high speed certified. Backward compatible with USB 1.0 standards USB female A to male A 1 foot long...
    SKU: DCUSB2AM-AF1
  • 10 Ft USB Extension Cable AM/AF
    10 Ft USB Extension Cable AM/AF $6.94 View Details
    10 Foot USB 2.0 High Speed Extension Cable General Features: Standard USB extension cable USB 2.0 high speed certified. Backward compatible with USB 1.0 standards USB female A to male A 10 feet...
    SKU: DCUSB2AM-AF10
  • 15 Ft USB Extension Cable - A M / A F
    15 Ft USB Extension Cable - A M / A F $8.94 View Details
    15 Foot USB 2.0 High Speed Extension Cable General Features: Standard USB extension cable USB 2.0 high speed certified. Backward compatible with USB 1.0 standards USB female A to male A 15 feet...
    SKU: DCUSB2AM-AF15
  • 3 Ft USB Extension Cable - A M / A F
    3 Ft USB Extension Cable - A M / A F $3.45 View Details
    3 Foot USB 2.0 High Speed Extension Cable General Features: Standard USB extension cable USB 2.0 high speed certified. Backward compatible with USB 1.0 standards USB female A to male A 3 feet...
    SKU: DCUSB2AM-AF3
  • 6 Ft USB Extension Cable - A M/ A F
    6 Ft USB Extension Cable - A M/ A F $3.95 View Details
    6 Foot USB 2.0 High Speed Extension Cable General Features: Standard USB extension cable USB 2.0 high speed certified. Backward compatible with USB 1.0 standards USB female A to male A 6 feet...
    SKU: DCUSB2AM-AF6
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