The TWAL 0408-250E from BONN Elektronik is a RF Amplifier with Frequency 4 to 8 GHz, Gain 54 to 62 dB, Gain Flatness ±7.5 dB, Noise Figure 20 dB, Output Power 53.97 to 54.77 dBm. Tags: Benchtop / Rackmount, Travelling Wave Tube Amplifier. More details for TWAL 0408-250E can be seen below.