My thought is mortal matter like the Hertzian wave or solar energy, which has a begining and an end; it has the narrowness of the casket in store for me.

The very same principles apply to forced oscillation of any wave, whether it is a sound wave, radio wave, light wave or whatever.

The second base station device receives a radio wave transmitted from the base station device and extracts first identification information for identifying the base station device.

Said buoy is equipped with a hydrophone and transmits acoustic signals received thereby to the vessel by radio relay channel or wire route (504).

The voice interface (2) is used for sound input of voice commands which are transmitted after being electronically processed by radio relay channel to the central unit (1).

The central unit (1) comprises the elements required for voice recognition, for example a processor system, and interfaces (4a, 4b, 4c) for controlling external appliances through radio relay channel or via cable.

The present invention discloses a method, device and system for scheduling the service of a microwave link, and involves the microwave communication technology field.

In 2001, the company was awarded a contract for the first digital COFDM microwave link for a European police force.

The ear pad and the intermediate module mutually communicate in two-way alternate communication, under the control of the earpiece, through a wireless microwave link, at a frequency lower than 1GHz, preferably lower than 434MHz.