Patent ID: 6847804

Claim:
A method for testing micropower short-wave frequency-modulation digital radio on a production line, comprising the following steps: a. providing on said production line with at least two test stations; b. providing on each of said test stations with a steel cage that is adapted to accommodate a transmitter and a corresponding receiver of a product to be tested therein; and c. providing between said steel cages located at any two adjacent ones of said at least two test stations with an interference generator that is adapted to transmit signal-free carrier waves having the same frequency as that of signal-carrying carrier waves transmitted from said transmitter of said product to be tested; whereby electric waves radiated from said transmitter of said tested product positioned in any one of said steel cages are first attenuated by said steel cage in which said transmitter is positioned, and then destructed due to interference by electric waves transmitted from said interference generator; said interfered and destructed electric waves, when being transmitted to another one of said at least two test stations, being attenuated again by said steel cage located thereat and finally superceded by electric waves in said steel cage at said another test station; and wherein said attenuated signal-free carrier waves are not decoded at a receiver of a tested product in said steel cage at said another test station, enabling tests simultaneously conducted at two adjacent ones of said test stations to be completely protected from mutual interference with one another.