Gps mast module and mobile radio installation

GPS mast module having the following features:

• comprising at least one integrated and/or connectable satellite antenna (GPS-ANT;
• GPS-ANT1, GPS-ANT2),
• the GPS mast module (17) comprises at least two connections (13, 19), namely a base-station-side connection (13) and a mobile-communication-antenna-side connection (19),
• characterised by the following further features:
• a portion of a main HF path (7, 107) for transmitting HF transmission and/or receiving signals of a mobile communication system extends between the at least two connections (13, 19),
• the at least one provided and/or connectable satellite antenna (GPS-ANT;
• GPS-ANT1, GPS-ANT2) is coupled to at least one portion of the main HF path (7;
• 107) via a satellite receiving line (21, 21′),
• a low-noise satellite reception amplifier (25) is provided in this satellite receiving line (21, 21′),
• the low-noise satellite reception amplifier (25) has on the output side at least one frequency selection means (28) for suppressing one or more mobile communication frequencies of an antenna (ANT) which is or can be connected to the mobile-communication-side connection (19),
• the supply circuit for the main HF path (7;
• 107) is constructed in such a way that
• a) a loose connection of the output of the frequency selection means (28) to the main HF path (7;
• 107) is provided by a hybrid coupler (23), and
• b) the amplified satellite signal is supplied with a coupling attenuation of at least 10 dB by means of the hybrid coupler (23), the satellite reception amplifier (25) having an attenuation at least 6 dB greater than the coupling attenuation of the hybrid coupler (23).