About: http://webisa.webdatacommons.org/446357436

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	an induction coil or magnetometer for receiving the signals and a portable receiving station including amplifiers, filters, analog to digital converter, and computer recording and processing equipment.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com