NGU TFEM-85. A Time-and Frequency-domain Electromagnetic System. Project Research Report.
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- Rapporter 
The report introduces the NGU TFEM-85 time- and frequency-domain electromagnetic system developed at the Geological Survey of Norway. A generel description of the system design, and a more Specific description of the receiver-coil system, the receiver, the transmitter and the power supply units is given. The report does not include details of the theory, the hardwares and the programs.