This is a tested Ultra low noise (Noise figure <2.1 dB/1,9 GHz), professional 2.5 W amplifier that requires minimum driving input of 1 mW for the maximum of 2.5 W RF power output. It is broadband in 1,500 MHz- 2,200 MHz and doesn't require any tuning or adjusting. Power supply is 12 V/ 0.98 A. Gain 33 dB. SMA connectors Input / Output 50 ohms impedance. Class of operation is AB. .
Dimensions: 6.0" X 3.0 " X 2.0 ".