The 4003 from Ophir RF is a RF Amplifier with Frequency 1.8 to 2.0 GHz, Gain 52 dB, Gain Flatness ± 0.75 dB max, Output Power 50 to 50.79 dBm, Output Power 100 to 119.95 W. Tags: Benchtop / Rackmount, Power Amplifier. More details for 4003 can be seen below.