The KB20120S39A from KeyLink Microwave is a RF Amplifier with Frequency 2 to 12 GHz, Power Gain 45 dB, Gain Flatness 5 dB (Power Gain Flatness), Noise Figure 10 dB, Output Power 37 to 42 dBm. Tags: Benchtop / Rackmount, Power Amplifier. More details for KB20120S39A can be seen below.