The TWAL 2640-40E from BONN Elektronik is a RF Amplifier with Frequency 26.5 to 40 GHz, Gain 46 to 52 dB, Gain Flatness ±6 dB, Noise Figure 20 dB, Output Power 46.02 to 47.78 dBm. Tags: Benchtop / Rackmount, Travelling Wave Tube Amplifier. More details for TWAL 2640-40E can be seen below.