The QPAS-20-500-47-50S from Qualwave is a RF Amplifier with Frequency 0.02 to 0.5 GHz, Gain 47 dB, Power Gain 47 dB, Gain Flatness 3±1 dB, Saturated Power 50 dBm. Tags: Benchtop / Rackmount, Power Amplifier. More details for QPAS-20-500-47-50S can be seen below.