About: http://webisa.webdatacommons.org/17396372

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	FIG. 2A is a schematic block diagram of the first half of a system that allows free space communication and showing band limited signal sources that are later combined.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com