Radio selective calling receiver capable of checking time period of stay outside coverage zone

A radio selective calling receiver which determines that said radio selective calling receiver is within a coverage zone of a radio base station based on when synchronization is established with the radio base station by receipt of a frame synchronization signal from the radio base station, and which determines that said radio selective calling receiver is outside the coverage zone of the radio base station based on when no frame synchronization signal is received within a predetermined time period after a step-out state is set, the radio selective calling receiver comprising:

• a timer which starts to count when the step-out state is set and which continues counting a time until a frame synchronization signal is received thereby producing a count value, and
• notification means for providing notification of the count value when the frame synchronization signal is received after the lapse of the predetermined time period set in said timer.