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Cellphone-Mate 70db SureCall Wireless Amplifier for WiMAX - CM2500W [2500mhz ONLY] - DISCONTINUED

No Longer Available

Item Number: 3772



Sales Tax (?):

$0.00 tax collected outside of Illinois


This amplifier has been discontinued. See our other building amplifiers

Fast Facts About This Product:

  • This amplifier is best for: Users who need to provide amplified cellular signal to multiple 4G WiMAX modems or phones in a large home or office and have the space to accommodate the 60' of separation between the outside and inside antennas that this kit requires.
  • Coverage area*: 4,000 - 10,000 square feet
  • All-in-One Kit? NO - antennas and cabling are required (sold separately)
  • Compatibility: WiMAX (Sprint/CLEAR 4G) ONLY! This amplifier will NOT work for any other network/frequency

IMPORTANT SIGNAL INFORMATION: If you're purchasing an amplifier for use at one specific location, we strongly recommend doing a site survey first to determine whether the amplifier will help you and to give you an idea of what kind of results you can expect from it.

If your signal is extremely poor (-108db or worse), an amplifier may not be effective - there must be some usable signal available for the amplifier to boost. Conversely, if the signal is too STRONG at your location (-50db or better), the amplifier may shut down to avoid interference with the tower.

The SureCall® CM2500W 70dB single band amplifier is the first 4G WiMax amplifier on the after-market dedicated to improving data service on the Sprint/CLEAR WiMax network. This amplifier is designed for homes, offices and warehouses operating on the WiMax 4G frequency where users currently are not getting a 4G signal due to geographic location, building materials or structural design or where the signal is getting weak.

How it works: The outside antenna (sold separately) picks up the cellular signal and sends it through a cable (sold separately) to the amplifier. The signal is then boosted and sent through a cable (sold separately) to the inside antenna (sold separately), which rebroadcasts the boosted signal. All of your modems/phones within range of the inside antenna can benefit from the boosted signal wirelessly.

*Many factors will influence the actual coverage area you will see from a repeater, including layout/floorplan, construction, and original un-amplified signal strength. Depending on your situation, you may see more or less coverage than the estimates listed here. It is not possible to guarantee coverage area.

Installation diagram:

not to scale. representative graphic only. amplifier does NOT include cabling or antennas.

Installation notes:

  • In order for your system to function properly, you must maintain adequate separation between the outside and inside antennas (if the antennas are too close together, there will be oscillation/feedback between the antennas and the amplifier will shut down). This amplifier requires approximately 60' of separation between the outside and inside antennas (if you are using an omnidirectional antenna as the outside antenna, you will need more separation than directional antenna users will need). Separation can be horizontal or vertical.
  • If you cannot achieve adequate separation to eliminate oscillation, you can turn down the gain on the amplifier, but that will result in a smaller coverage area from the amplifier.
  • The interior antenna should be at least 10' away from the amplifier.
  • If you are using a panel antenna as the interior antenna, make sure it is aimed AWAY from the outside antenna.


  • Single Band 2500 MHz – (4G WiMax Band)
  • 70 dB average and 75dB maximum gain
  • Independently adjustable uplink and downlinks
  • Auto shutdown


  • Frequency Range: 2496 - 2690 MHz
  • Standards Supported: WiMAX only
  • Gain: 70db (average) 75db (max)
  • Max Output Power: 3 watts EiRP
  • Impedance: 50ohms
  • Noise Figure: Maximum 5 dB
  • VSWR: Less than 2:1
  • AC Power Transformer: Input AC110V, 60Hz; Output: DC6V
  • RF Connectors: N Female on both sides
  • Power Consumption:
  • Dimensions: 5.5” x 4.75” x 1.25”
  • Weight: 2lbs

Package includes:

  • CM2500W Amplifier
  • 6V AC Power Supply
  • User Manual
  • Velcro and screw mounting kit

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