About: http://webisa.webdatacommons.org/244809490

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	Additionally, frequencies in the range of from about 400 khz to about 8 Mhz, and more particularly about 1.8 Mhz, have been determined to provide highly satisfactory performance.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com