Geostationary communications satellites relaying television pictures around the world have now become an accepted part of everyday life. The present type of system uses low power satellites in orbit transmitting to large earth receiving stations, the signal then being reformed and transmitted onward to the domestic television set through the existing network of ground transmission and repeater stations. It must be remembered that these existing satellites are primarily telephone links and that the ground receiving stations are operated by the national post office or telephone company who let circuits to the television companies. This system is viable where a network of repeater stations exists, but in very remote and mountainous areas the cost of providing enough repeater stations is prohibitive.

Design management is concerned with the exercise of mental, verbal and graphical skills which are so directed and controlled to meet a social need or needs. Any manager's job can briefly be stated as being composed of two complementary parts:

• (i) Deciding what has to be done, and

• (ii) assuring that the appropriate actions are taken to achieve the decisions taken.

The functions of a manager are concerned with; forecasting, planning, organising, controlling, evaluating and directing. In practice these tend to spiral around as time proceeds, and may be depicted as in Fig. 1. In the centre of this diagram is the important factor of motivation which all good managers have and are able to inject into their staff. In engineering, design is the necessary prelude to the manipulation of matter. But before design ideas can be turned into hardware they have to be transferred through the design process.