About: http://webisa.webdatacommons.org/377408129

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	Your ladder line is balanced and your doublet is a balanced antenna therefore you do not need anything except a piece of plastic with a few holes drilled for a strain relief.
http://www.w3.org/ns/prov#wasQuotedFrom	eham.net