The S61 D Series from AMETEK CTS is a RF Amplifier with Frequency 800 MHz to 6 GHz, Gain 45 to 56 dB, Gain Flatness +/-3.0 dB, P1dB 44.77 to 56.02 dBm, P1dB 30 to 400 W. Tags: Benchtop / Rackmount, Power Amplifier. More details for S61 D Series can be seen below.