The TWAL 2640-120 from BONN Elektronik is a RF Amplifier with Frequency 26.5 to 40 GHz, Gain 50.8 to 57 dB, Gain Flatness ±6 dB, Noise Figure 20 dB, Output Power 50.79 to 51.76 dBm. Tags: Benchtop / Rackmount, Travelling Wave Tube Amplifier. More details for TWAL 2640-120 can be seen below.