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Radio and digitizing Seismograph

Sercel Eagle Opseis 388

Each unit conisists of two tape drives (top), a radio Unit (middle) and several A/D boards (bottom) for up to 2400 channels.  The smallest sampling interval is 1 ms.

The same unit with a spectrum analyzer

Spectrum Analyzer monitor radio transmission between field unit and the recorder above

Tape Drive

This drive is opened for cleaning