Abstract: A receiver and a method for controlling a receiver, the receiver being implemented on the RAKE principle and comprising a number of correlators (30a-30d) which are able to synchronize with a received signal. To effectively utilize the correlators of the receiver, the operation made of the correlators in the receiver is changed dynamically in the method of the invention between the received signal tracking and acquisition modes according to the need.

Abstract: A method for realizing a group call in a digital radio network wherein a plurality of mobile subscribers participating in the group call roam within the area of at least one base station. Subscribers participating in the group call are guided one by one to talk on the same radio channel. To be able to handle the traffic in a controlled manner at all times without the subscribers congesting the radio channel by talking simultaneously, the base station is informed of the subscriber's desire to speak after the respective subscriber has indicated his or her desire to speak with predetermined signalling, the next speaker is selected at the base station on the basis of a predetermined algorithm, and the base station transmits an indication of a turn to speak to the subscriber which at the time is the next speaker.