The KNP9500S53A from KeyLink Microwave is a RF Amplifier with Frequency 8.9 to 10.5 GHz, Input Power -1 to 1 dBm, Input Return Loss -10 dB, Harmonics -35 dBc, Spurious -55 dBc. Tags: Benchtop / Rackmount, Power Amplifier. More details for KNP9500S53A can be seen below.