Receiver, method thereof, program thereof, recording medium recording the program, and communication system

A receiver which receives plural aggregates of data in different frequency bands, respectively, from a ground station and plural artificial satellites, in the form of electric waves together with a list of plural different data items which are grouped into the aggregates of data, demodulates the received electric waves to attain predetermined one of the aggregates of data, and attains the data items included in the predetermined one of the aggregate of data, the receiver comprising:

• a recording portion which creates a record list based on the list;
• an input portion which sets and inputs a data switching request for sequentially switching the attained data items, in an order of the data items listed in the record list, by an input operation;
• and
• a control portion which recognizes an input of setting the data switching request by the input portion, and accordingly makes a control of attaining the closest one of the data items to one of the data items which has been attained immediately before the input of setting the data switching request, in the order of the data items listed in the record list, the closet one data item included in the same aggregate of data as one of the aggregates of data which has been attained before the input of setting the data switching request.