Decentralised subscriber switching system for antenna terminals

摘要

The system has at least one subscriber switch device (3) and at least one antenna terminal socket (2) for branch connected systems or antenna sockets with connected switch sections for a star system. Each subscriber switch device (3) has a mains part to generate a constant supply voltage for an authorisation identification device (10) to recognise a subscriber identification, and to output a specific activation signal to a code generator. The generator creates a specific code signal. The generated code signal can be connected via a feed branch to a signal line, and the constant voltage can be connected via a constant voltage on switch, and a constant voltage feed branch, to a signal line. Each antenna socket and each connected switch part has a branch for coupling or decoupling the code signal onto the signal line, as well as the generated constant voltage. It also has a signal identification device, programmable before assembly, to identify the code signal and output a switch voltage to a switchover device. This switches several different programme groups to the signal line.