File:EMP protector - quarter-wave shorting stub.jpg
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![File:EMP protector - quarter-wave shorting stub.jpg](/wiki/images/thumb/b/b2/EMP_protector_-_quarter-wave_shorting_stub.jpg/753px-EMP_protector_-_quarter-wave_shorting_stub.jpg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 14:17, 24 April 2018 | ![]() | 2,580 × 2,055 (969 KB) | imagescommonswiki>Wdwd | == {{int:filedesc}} == {{Information |Description={{en|A lightning EMP protector (surge arrestor) for coaxial cables with a quarter-wave λ/4 shorting stub (QWS) from a Base Transceiver Station (BTS). Since lightning interferences have a relative low frequency spectrum the λ/4 shorting stub act as a short circuit, conducting the lightning current to the ground. This quarter-wave shorting stub has a centre operating frequency of 980 MHz, the stub is approximately 7 cm in... |
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