Abstract: The invention relates to an arrangement comprising a traveling-wave tube mounted in a housing, and a power supply source enclosed by a separate housing.Inventively, all electrical supply lines inside the tube housing are run to a plug mounted in this housing, projecting outward and enclosed by a sleeve of electrically conductive material. The invention further provides for a central singular electrical coupling matrix in the power source, whereby all electrical connecting lines to the traveling-wave tube are combined and connected to the outside via one electrical socket carried by this housing. Both housings can easily be mounted such that, when the plug connection is established, the plug sleeve is compressed. The invention provides a space-savingly designed unit of traveling-wave tube and current supply unit connected to each other with an HF-seal.