The Model 400K, CW TWT Amplifier has been designed for parallel operation of 250 watt traveling wave tubes in the 17.7 to 22.0 GHz frequency range, providing up to 400W of output power.

The High Voltage Power Supplies are modular DC-DC converter designs. The Power supply design provides supe- rior stability for optimum TWT phase noise and spurious performance. Plug-in PC boards are accessible through the front panel. The PC card cover contains a legend for PC card located test points and controls.

The modular design of the Model 400K provides conve- nient accessibility to all elements in the TWT amplifier. High voltage modules are encapsulated, plug-in assemblies. There is no exposed high voltage. Most modules are interchangeable between units.