About: http://webisa.webdatacommons.org/101329307

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 frequencies of the two necessary frequency signals may lie in the range of e.g. 15-25 MHz and 150-250 MHz.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr