A method is provided for transmitting data between a plurality of radio stations of one same network, each station having a transmitter and a receiver. The method includes a first transmission mode in which the network operates with frequency hopping in a first frequency plan, the frequency used for data transmission being maintained for a FH dwell time, and changing from one FH dwell time to another as per a law of frequency change; a second transmission mode in a second frequency plan in which a transmitter station (A) transmits data on a fixed frequency to a receiver station (B), the second mode comprising a step (120) to determine the fixed frequency, the determination step comprising the transmission of a test word on each frequency of the second plan for a respective test dwell time. The duration of the test dwell time is equal to the duration of the FH dwell time multiplied by an integer factor of value between 1 and 6.