| 摘要 |
This invention is an apparatus for detecting and pinpointing the sources of sparking electromagnetic RF radiation emanating from high and extra high voltage power lines in the presence of high level corona (RF) radiations which are often present on such lines. It uses a unique metal and plastic rod antenna which will not emit corona when brought up close to a high voltage conductor, and which acts as an attenuator and sensitivity indicator when pushed in steps into a special metal attenuator collar and into its metallic housing. Within the housing, the antenna rod is connected to receiving circuitry which provides sound output of the source noise-signal detected. The housing with its adapter may be removably attached to the tool holder of a standard power line hot stick to permit safe use of the apparatus as a proximity detector in pinpointing sources on power lines. The apparatus receives at a nominal UHF frequency of 430 MHz to permit detection of sparking without detecting corona.
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