| http://www.w3.org/ns/prov#value | - An antenna comprising a substantially rectangular conductive frame, the long side of said frame exceeding in length twice the length of the short side of said frame, means for tuning said antenna including a variable filter connected across the long sides of said frame, a coaxial cable, and means for connecting said coaxial cable to said variable filter means and to said frame, said tunable filter
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