Office: 214-884-2707   
Fax: 214-349-9491

What is a BDA? Cellular Amplifiers and Repeaters boost wireless signal to cell phones and PC's providing significantly better reception at home, in the office, or in a vehicle. If you live or travel in a poor reception area, you can understand the frustration of dropped calls. Cellular amplifiers drastically improve wireless phone signal quality in rural or remote areas where terrain or distance from a cell tower affect signal, as well as urban locations where building material such as concrete, metal, or reflective glass can block or distort signal. With a stronger signal, you acquire better voice signal quality for clearer conversation, better data signal quality for faster internet, and longer battery life since your phone believes it's closer to a cell tower than it actually is.
FAQs


What frequencies do CSI Bi-Directional Amplifiers (BDAs) work on?
CSI manufactures a wide range of amplifiers covering public safety and wireless service provider frequencies for Public Safety 700, Public Safety 800, SMR800, SMR900, GSM 900, DCS 1800, UMTS 2100, Cellular and PCS bands and sub-blocks.


How do I know which CSI Bi-Directional Amplifier to use?
To determine which amplifier to use, one needs to know the frequency band, Receiver Signal Strength Indicator (RSSI) of the serving cell site and the characteristics of the facility that requires coverage. Generally speaking the Model BDA510 & BDA610 series are used in larger applications. 

Contact CSI or your authorized CSI Authorized Reseller to determine the best BDA or Repeater for your application.


What is a link budget?
A link budget is the calculation of signal strength on a Distributed Antenna System (DAS) at coax connection points. Example of a downlink link budget for one indoor antenna DAS; Roof RSSI(-75dBm) + gain donor antenna (11dB) + loss coax to BDA (3dB) + gain BDA (62dB) + loss coax to indoor antenna (4.5dB) = -9.5dBm at indoor antenna port.


How much area will each antenna cover?
Antenna coverage is determined by the building characteristic path loss, frequency band(s), signal strength at antenna port and antenna type. For example, in a typical office application, an omni antenna with an output signal of +9.5dBm will maintain a coverage area of +85dB or better for 22k square feet on the cellular frequency band, 16k square feet on the PCS frequency band.


What is BDA oscillation?
Oscillation is when the outside antenna hears the amplified signal from the indoor antenna or the indoor antenna hears the amplified signal from the outside antenna. This event is similar to microphone/speaker feedback in audio. CSI amplifiers contain circuits to limit oscillation and oscillation shut down.


Boost Your Cell Phone Coverage for your 
Business, or Large Building
(We Do Not Install BDAs in Residential Homes)
Bi-Directional Amplifiers (BDA)
How do the cellular amplifiers work? An outside antenna is placed in an area with the best signal. It receives the weak cellular signal and sends it to the amplifier. The amplifier boosts the signal and sends it to your inside antenna which then sends this stronger signal to your phone or data cards. Then on transmission, the phone or data card sends out a signal that is received by the inside antenna. It is then boosted by the amplifier to the outside antenna sending a stronger, more reliable signal to the cellular tower. For this reason, for a wireless antenna to work, you must have a usable signal present within 50 feet of your building. If you don't have adequate signal to support a wireless amplifier you should consider a direct connect amplifier instead.

No matter the  building type, Dallas Mobile Communications can install a Cellular Signal Booster to improve your Cell Phone Coverage. There are various types of equipment that we can install depending on your needs. We have installed Cell Phone Signal Boosters (BDA's) in all types of buildings  ( Churches, Hospitals, Large Commercial Buildings, Public Safety Entaties. Simply fill out the request form below and we will gove you a free consultation. 
BDA grabs a weak signal then Amplifies it.
Our customers need improved call clarity; we have a simple solution - a cell phone repeater (cell phone wireless amplifier system). A cell phone repeater is a type of cellular amplifier. Cell phone repeater systems are available for Cellular, PCS, and iDEN (Nextel) frequencies. A cellular repeater works by bringing a cellular signal to a place where there is no signal or the signal is very faint. Amplification devices allow users to get clear calls in areas that might have been cellular dead zones without them.

 There are practical and affordable solutions available for single or multiple phones in both vehicles and buildings.ur customers need improved call clarity; we have a simple solution - a cell phone repeater (cell phone wireless amplifier system). A cell phone repeater is a type of cellular amplifier. Cell phone repeater systems are available for Cellular, PCS, and iDEN (Nextel) frequencies. A cellular repeater works by bringing a cellular signal to a place where there is no signal or the signal is very faint. Amplification devices allow users to get clear calls in areas that might have been cellular dead zones without them. There are practical and affordable solutions available for single or multiple phones in both vehicles and buildings.
Who needs a cellular repeater (cell phone repeater)?

  • Businesses that operate in large buildings
  • Business within buildings that make cell phone conversations nearly impossible 
  • People who need to used their cell phones inside of metal buildings or construction trailers
  • Businesses with a fleet of roving vehicles 
  • Any business or that has poor to no cellular signal in their building like Churches, Schools, Hospitals, Large Warehouses, College Campuses




Other Services Include: Equipment Sales, Product and Design Assistance to large and small public safety entities needing two-way radios, vehicle mounts, Installation of: Sirens, DVR, Cameras, Light Bars, Strobes, GPS tracking and other related products. FCC Licensing Assistance, Wireless Project Consulting and Wireless System Design.  

A Two-Way Radio for Every Budget: We offer a wide variety of nationally known radio products, including two-way radios from ICOM, Vertex/Standard, Kenwood, HYT and Hytera, and Ritron, and our pricing of various models in each category can accommodate every user, from the most cost and budget-minded, to those wanting top-of-the-line professional or public safety equipment.


Dallas Mobile Communications 
All Rights Reserved. 2012
214.884.2707

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