Signal Amplifiers (sometimes referred to as signal "boosters" or Bi-Directional Amplifiers) are designed to enhance a signal received in areas where signal strength is affected by terrain, buildings or other interference.  They are compatible with normal cellular network operations, and boost signal strength along the edge of the network cell.  They are linked to the exterior antenna via coaxial cable and are cabled directly to the antenna of the cellular equipment by means of an adaptor cable (direct-connect).

Most quality amplifiers are "dual-band" these days...meaning that, as cellular networks have expanded their frequency assignments, the system will amplify both the lower (Cellular) band (800/850 MHz) and the upper  (PCS) band (1900 MHz).

Signal Repeaters are a special type of amplifier.  They are linked to an exterior antenna and to an interior antenna via coaxial cable.  Repeaters are designed to "resend" the received (and amplified) signal throughout an area by means of the interior antenna.  This allows the signal to be received by multiple cellular units simultaneously and totally wireless (no direct connection to the handset). 

All signal repeaters provided by OmniCell Communications are high quality units capable of enhancing your cellular signal under difficult circumstances.  However, most repeaters offer only a single-band process.  You must choose between the 800/850 MHz band and the 1900 MHz band.  In many areas of the country this is a very difficult choice to make...equipment must be purchased and installed for very specific circumstances.  Digital Antenna offers all of their signal repeater systems as dual-band units.