The MTG 5338X 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 350 W(C & Ku Band), 600 W(X Band), Gain 37 to 48 dB. More details for MTG 5338X can be seen below.