Glomex VHF radio splitter RA 201 for operating a VHF radiotelephone system, AIS and VHF radio with just one antenna. This active antenna splitter is operated with 12V DC voltage and has a current consumption of max. 0.3mA. The connections for AIS and VHF radio can only receive signals, the connection for VHF radiotelephony can be used to transmit and receive.