TOWERIQ~Guardian A Public Safety Band signal booster enhancesin-building FirstNet coverage for crucial communications, delivering consistent signal for First Responders and other public safety officials who rely on two-way radio communication inside large buildings. GuardianA is a Class A, 2-Watt, FirstNet Ready bi-directional amplifier with a maximum gain of 90 dB supporting both the 700 and 800 MHz Public Safety frequency bands. Class A, 32 channel independently controlled channels per band with Auto Gain Control (AGC) for each channel. UL: 799-805, 806-816 & DL: 769-775, 851-861.