About: http://webisa.webdatacommons.org/437542641

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	Crystals and other components change with time and temperature regime, and transmitters and receivers may drift.
http://www.w3.org/ns/prov#wasQuotedFrom	amsat.org