The MPA-9K-400M-400 from Maury Microwave is a EMC Power Amplifiers with Frequency 9K to 0.4 GHz, Gain 55 dB, Gain Control Range` 20 dB (Variable), Power (dBm) 53.01 to 56.02 dBm, Power (W) 200 to 400 W. More details for MPA-9K-400M-400 can be seen below.