The 5053 from Ophir RF is a RF Amplifier with Frequency 100 kHz to 250 MHz, Gain 57 dB, Gain Flatness ± 2.5 dB, Output Power 54.77 to 56.99 dBm, Output Power 299.92 to 500.03 W. Tags: Benchtop / Rackmount, Power Amplifier. More details for 5053 can be seen below.