The invention relates to a synchronization method for radio transmitters of a local, e.g. nationwide paging network. A paging network is connected to a public switched telephone network and comprises a paging network unit (PNU), transmitter group controllers (TGC) and transmitter site interfaces (TSI). All controllers are provided with means for receiving, processing and transmitting messages in digital form. Base stations are provided with radio transceivers (Tx, Rx) transmitting radio signals intended for paging or for synchronization of the base stations covering a common overlap area. With the method of the invention, synchronization is performed on the basis of a synchronization plan composed by paging network unit (PNU) and synchronization commands based on the plan. Synchronization proceeds sequentially in a certain order so that each base station (except for the initiator) first receives and then transmits a synchronization signal. Prior to the transmission of a synchronization signal, compensation of delays is executed based on one hand on receiving own transmission and, on the other hand, on information given by the paging network unit PNU about distances between base stations. The synchronous transmission of paging information is confirmed to be independent of a digital data transmission network by determining the exact time of radio transmission of each page according to a plan made beforehand by the paging network unit.
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