The 4004 from Ophir RF is a RF Amplifier with Frequency 650 to 805 MHz, Gain 61 dB, Gain Flatness ± 2.0 dB max, Output Power 56.98 to 60 dBm, Output Power 498.88 to 1000 W. Tags: Benchtop / Rackmount, Power Amplifier. More details for 4004 can be seen below.