About: http://webisa.webdatacommons.org/116694443

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	The filter 1814 eliminates all frequencies except for the 150 kHz difference, or beat, frequency in a similar manner as was done by filter 1808.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk