A deck support system for supporting cargo in a freight compartment is provided. The first set of N approximately resonant elements are wound to form a first helix with an initial diameter d2 and a height h2. The melting pot and the metal mass are radio frequency induction heated with RF signal modulated with a low frequency signal. A permanent connection is established between the gas distributor apparatus and the devices in that gas-intake ducts are configured on the gas-containing bodies at least partially surrounding the devices, the gas-intake ducts having functional elements and projecting with these elements into the connecting pieces of the gas distributor apparatus. This network switch could be any Ethernet communication devices such as hub, managed or unmanaged switch etc.