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Cellphone-Mate 3-Watt AT&T/US Cellular 4G LTE Direct Connect Amplifier - CM700A-32 [700Amhz ONLY]

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Item Number: 3877



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The yagi antenna REQUIRES line of sight to the tower (it will not work if you don't know where the tower is or if there are obstructions between you and the tower). The panel antenna is also a directional antenna and must be aimed towards the tower, but it does NOT require line of sight. If you are not sure where the cell tower is, you should choose one of the omnidirectional antennas. If you already have an antenna you plan to use, you can select the "I already have an antenna" option.
Select Antenna - details
The Magnetic Mount Antenna, Indoor/Portable Antenna, Omni RV Antenna, and Omni Trucker Antenna all INCLUDE cabling. The other antennas do NOT include cabling and you must select a cable here to connect the antenna to the amplifier (for the ultra-low-loss cabling, we bundle the connector you'll need to connect the cable to your amplifier). If you already have a compatible cable you plan to use or if you selected one of the antennas that includes cabling, you may select the "I already have a cable" option.
Select a Cable - details
You will need an adapter cable to connect the amplifier to your device. The amplifier includes a short extension cable to go between the amplifier and your adapter (your adapter will not screw directly into the amp). If you already own the necessary adapter, you can select the "I already have an adapter" option.
Select Adapter Cable - details

Fast Facts About This Product:

  • This amplifier is best for: Providing the most signal possible to a single AT&T or US Cellular 4G LTE device that has an antenna port.
  • All-in-One Kit? NO - an antenna and an adapter to connect the amp to your device are required (sold separately), see above
  • Compatibility: AT&T and US Cellular 4G LTE only - this amplifier will NOT work for ANY other networks (not even Verizon LTE - Verizon uses a different portion of the 700mhz frequency for their LTE network; Verizon users should use the CM700V-32 amplifier).

Do a site survey before buying this amplifier! If you're purchasing this to use in just one location, we strongly recommend doing a site survey first to determine whether the amplifier will help your signal and performance and to give you an idea of what kind of results you can expect from it. Start here: Will an Antenna/Amplifier Help Me?

If your signal is extremely poor (-108db or worse), an amplifier may not help you. There must be some usable signal available for the amplifier to boost for it to be effective.

Are you stuck in a weak coverage area or traveling in a vehicle and want to improve your signal as much as possible? A good antenna is a must, but if you want the best possible signal, a direct connect signal amplifier is the answer. A direct connect signal amplifier goes in between your external antenna and your adapter cable (which plugs into your mobile broadband device's antenna port) to provide the best possible signal wherever you are.

The Cellphone-Mate CM700A-32 is a high-performance amplifier that boosts the signal to AT&T and US Cellular 4G LTE devices. Combined with a 4G antenna, this amplifier will give you the best possible signal for your AT&T 4G modem. This AC or DC-powered amplifier (AC power supply included, DC power supply available separately) is FCC-Approved, and provides the maximum output power allowed by the FCC for use by non-broadcasters.

Package Includes:

  • CM700A-32 direct-connect amplifier
  • AC Power Supply (DC power supply available separately)
  • 6' RG-58 cable with FME/Female on both sides (to connect your adapter cable to the amplifier)
  • Velcro and Screw Mounting Kit
  • User Manual


  • Frequency Range: Uplink: 728-746 MHz / Downlink: 698-716 MHz
  • Standards Supported: LTE (AT&T and US Cellular only)
  • Gain: 32dB
  • 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: DC 6V
  • RF Connectors: FME male
  • Power Consumption: <10W
  • Dimensions: 6" x 4" x 2"
  • Weight: 1lb 13oz

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All Reviews (2)

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Date Added: 09/29/2013 by John L. (Seaview, WA)
We're using this amplifier with a 9.5" Full Band Outdoor Omni 3G/4G Antenna mounted on top of a travel trailer and an AT&T Unite AirCard 770S (mfg. by Sierra Wireless) inside. The LTE signal results at our current location are as follows: WITHOUT this amplifier: -112dB RSRP and 25 signal quality. WITH this amplifier set to full gain (all dip switches off): -77dB RSRP and 62 signal quality. Data speed is significantly faster and very consistent with this amplifier. Overall amazing performance and a great value.

Date Added: 03/12/2013 by Michael C. (North Mankato, MN)
HOLY COW the cellphone-mate att LTE direct connect booster is mind-blowingly good. You guys rock.

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Will I need adapters to use my existing antenna with this amp?


Cellphone-Mate offers a two-year warranty on all of their products.

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CM700x-32 manual

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