A mobile communication terminal having adaptive array antennas is provided that is capable of transmitting signals to an intended base station without interfering other devices, even when a reception error occurs. The device includes a photo sensor adapted to: sense a brightness of ambient light; output a pulse width of an emission control signal corresponding to a sensed brightness of the ambient light; and output a gamma compensation coefficient corresponding to the sensed brightness of the ambient light and a user selected brightness. The gap between the two machine areas is blocked by means of a seal having a tapered end against one machine area and wherein the pressure reservoir maintains the fluid under pressure in the fluid space. PuAB 221 is fitted with a funnel 224 so as to guide the drilling of a cased borehole 220 in the marine soil 101, close to well 111.