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Direct-Connect In-Line Amplifier w/DC, +20dB - 811201

Product subtitle:

Dual-band M2M / In-Line amplifier for use as direct-connection amplifier or as extra pre-amp booster



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Wilson 811201 is a dual band (850/1900 Mhz) Direct-Connect In-Line Amplifier with 12V DC car power supply. Also known as Pre-Amps, Wilson 811201 amplify incoming signal to the signal booster.  Direct Connection amplifiers require that your cell phone or data card be directly wired to the amplifier, via a phone specific adapter (sold separately), providing maximum signal performance in low-signal areas, particularly rural and remote locations.  Direct connect amplifiers can be used both in fixed and mobile applications - including buildings, cars, boats, trucks, RV's etc. and need to be connected to an external antenna (not included).  In addition to phones and data cards, this type of amplifier makes it the ideal choice for M2M applications, where the amp can be directly hooked up to a modem. Includes 12-volt cigarette lighter adapter (A/C power adapter sold separately).

This product replaces Wilson 812201 Direct Connection Amplifier.


  • Can be used for building, mobile, marine or M2M applications


  • Supports all carriers that transmit at 824-894 and 1850-1990 MHz frequency bands only and works on all generations of CDMA, TDMA, GSM, and 3G
  • Works with 50 Ohm antennas and accessories
  • Does not support Nextel/iDen, Verizon 4G LTE, and AT&T 4G LTE/AWS
  • Contact us before you purchase this item if you are unsure

Package Includes:

  • Wilson 811201 Direct Connection 14 dB Amplifier Dual Band
  • DC plug-in power supply
  • 6' inside antenna extension cable

Product Features:

  • Connects directly to device
  • For Building, Mobile, Marine or M2M applications
  • Requires phone-specific adapter (not included)
  • Requires Outside Antenna (not included)
  • Greatly reduces dropped calls
  • Extends signal range
  • Increases data rates
  • Direct-Connect Amp: NO Oscillation
  • Overload protection circuit
  • Protects cell towers from being overloaded
  • Amplifies signal both to and from cell towers
  • Maximum gain within cellular standards
  • Extends battery life
  • Maximum 3000 milliwatts output power
  • FCC and IC approved


Technical Specifications

Frequency  824-894 MHz / 1850-1990 MHz    
Gain  20 dB / 20 dB 
Max Uplink Power  2240 mw / 930 mw
Max Downlink Power     0 dBm / 0 dBm 
Noise Figure  3.5 dB nominal 
Flatness  ±2 dB
Isolation  >90 dB
Power Requirements     12 V, 0.5-1.5 A max 
Connectors  FME Male 50 ohm   
Dimensions  5.4 x 4.3 x 1.4 inches / 14.0 x 10.8 x 3.5 cm   
Weight  1.32 lbs / 0.6 kg
Documentation  Installation Guide












This Direct-Connect amplifier can be used for M2M installations or as a Pre-Amp in-line booster. A Pre-Amp Booster is added into a complete, stand-alone building amplifier system, between outdoor antenna and the amplifier unit (close to the amplifier).

Please follow included installation instructions.

Product Videos

Wilson Signal Boosters Overview - How they work (01:59)
Animation of how Wilson Electronics Signal Boosters work to make your cellphone stay connected.
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    Animation of how Wilson Electronics Signal Boosters work to ma...
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