A compact portable transport unit for shipping hyperpolarized noble gases and shielding same from electromagnetic interference andor external magnetic fields includes a means for shifting the resonance frequency of the hyperpolarized gas outside the bandwidth of typical frequencies associated with prevalent time-dependent fields produced by electrical sources. Depending on whether or not a valid ignition key is in use, the engine immobilizer system sends signals to an electronic module to enter either a \u201cdisarmed\u201d or \u201carmed\u201d state. A predetermined color is given to a left side surface of the long projection, and a color different from the above color is given to a right side surface of the long projection. A catch includes two upwardly disposed legs connected to one another. The left track and the right track are each operable between a horizontal position and an inclined position. There are included a received-data demodulating device for receiving and demodulating digital broadcasts and generating a first clock in accordance with the digital broadcast and a clock generating device for generating a third clock by frequency-dividing a predetermined second clock.