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Pre-Amplifier In-Line Booster Kit for DB Pro, +20dB - 811200-K

Product subtitle:

DB Pro 841262 / 841263 expansion kit, includes all required items to add +20dB to your system





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2 Years

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This product has been discontinued by the manufacturer. 

This 811200-K power-up DB Pro expansion kit allows for easy integration of a pre-amplifier in-line booster into your 841262 or 841263 DB Pro kits.  This pre-amp would be installed just before the main DB Pro amplifier, between the outdoor antenna and the amplifier ("pre" label in the in-line booste name indicates the position in the system).  All items required for DB Pro installation are included in this user-friendly kit.  The pre-amplifier comes with a AC wall power supply and needs to be plugged-in to operate.  This in-line amplifier is a dual-band booster supporting most North Americal 3G and Edge voice, text, and data frequencies (like the DB Pro).  The 4 connectors are required to allow for RG-6 cabling with F-type connectors (utilized in the DB Pro kits and most residential installations) to attach to the FME-Male Pre-Amplifier unit. 

The Wilson 811200 is a dual-band (850/1900 Mhz) Direct-Connect amplifier. Also known as Pre-Amps or pre-amp in-line boosters, Wilson 811200 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 amplifier can be directly hooked up to a modem.  Includes a 12V A/C power supply.


  • Expansion kit for DB Pro 841262 and 841263
  • Designed to be used as system boosting addition in conjunction with a stand-alone complete system using the residential-style RG-6 cabling and F-type connectors (like the DB Pro).
  • Works with 75 Ohm amplifiers and accessories utilizing RG-6 cabling and F-type connectors (will also work with 50 ohm amplifiers, if included connectors/cables are not utilized)
  • Supports most North Americal 3G and Edge frequencies for Voice, Text, and Data (same as DB Pro)
  • 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 (same as DB Pro)
  • Does not support Nextel/iDen, Verizon 4G LTE, and AT&T 4G LTE/AWS (same as DB Pro)

Package Includes:

  • Wilson 811200 Direct-Connect Pre-Amplifier in-line booster w FME-Male connectors and 12V AC wall power supply
  • Two (2) Wilson 971107 N-Female to FME-Female connectors
  • Two (2) Wilson 971128 N-Male to F-Female connectors
  • Wilson 950602 2ft White RG-6 coaxial cable with F-Male connectors

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  10 dB / 14 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









Pre-amplifier is added to complete stand-alone amplifier system to increase dB gain of the system. It is installed between the outdoor antenna and the amplifier, close to the amplifier unit. It requires close proximity to wall power outlet (surge protector strip) as it must be powered to operate.
  1. Pre-Amp Booster ratings and reviews

    Posted by Bird-Arkansas on 19th Nov 2013

    After installing the booster service was substantially improved.

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