A method and an apparatus for measuring the dose, the dose rate andor the composition of radiation is disclosed. In one embodiment, the display device includes a flat panel display having an input for receiving display data. An object inside the firing mechanism is propelled towards a striking surface that faces the firing mechanism. The radio frequency generator delivers power in a range from about 50 kilowatts to about 2 Megawatts, and a power per unit length of antenna is in a range from about 0. Integrated with a permanent magnet in the unitary rotor shaft, the miniature gas turbine engine can generate electric power of 1 kW or less. The method may include receiving a plurality of source data bits, arranging the plurality of source data bits so that adjacent source data bits are to be transmitted on a different channel and transmitting the plurality of source data bits on a plurality of channels.