Stellar Communications Group offers comprehensive preliminary BDA / DAS testing services.  An in-building Public Safety bi-directional amplifier (BDA) and distributed antenna system (DAS) provides supplemental in-building public safety 2-way radio coverage for Police, Fire and First Responders in buildings that have poor or limited coverage. However, these systems are only required when a Received Signal Strength Indicator (RSSI) and Delivered Audio Quality (DAQ) test is performed by an FCC licensed and trained technician, with certified and calibrated equipment, and is presented to the Local Authority Having Jurisdiction (AHJ) and FCC license holder who deem that a BDA/DAS system is necessary. A BDA/DAS systems integrator never has the authority to mandate the necessity for a BDA/DAS system; that responsibility and authority resides solely with the AHJ and FCC license holder in all jurisdictions within Florida.