ETS-Lindgren 7606 Coil Antenna/Shielded Coil - Manual (Page 17)

4.0 Theory of Operation
Schematic of 7605/7606 in Calibration Configuration
The following illustration shows the Model 7605 Radiating Loop and the
Model 7606 Radiating Sensor as loops or coils separated by a calibration
distance of 5 cm.
Theory of Operation | 17