The 5135A from Ophir RF is a RF Amplifier with Frequency 800 MHz to 2 GHz, Gain 56 dB, Gain Flatness ± 2.0 dB max, Output Power 51.76 to 54.77 dBm, Output Power 149.97 to 299.92 W. Tags: Benchtop / Rackmount, Power Amplifier. More details for 5135A can be seen below.