About: http://webisa.webdatacommons.org/208618971

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	These systems operate at specially assigned frequencies and require separate arrangements to suppress noise and other effects which interfere with proper transmission of information.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com