The 5253 from Ophir RF is a RF Amplifier with Frequency 700 MHz to 2.5 GHz, Gain 50 dB, Gain Flatness ± 2.0 dB max, Output Power 47.782 to 49.03 dBm, Output Power 60.01 to 79.98 W. Tags: Benchtop / Rackmount, Power Amplifier. More details for 5253 can be seen below.