The 4021 from Ophir RF is a RF Amplifier with Frequency 2.2 to 2.4 GHz, Gain 40 dB, Gain Flatness ± 1.0 dB max, Output Power 40 to 40.79 dBm, Output Power 10 to 11.99 W. Tags: Benchtop / Rackmount, Power Amplifier. More details for 4021 can be seen below.