The MEC 5599 from Teledyne Microwave Solutions is a Traveling Wave Tube with Frequency 4 to 8 GHz(C Band) / 8 to 12 GHz(X Band) / 12 to 18 GHz(Ku Band), Power 112 W(C Band), 158 W(X Band), 91 W(Ku Band), Gain 40 to 41 dB. More details for MEC 5599 can be seen below.