Highly recommended for use with the portable shortwave radios.
Greatly improves shortwave reception.
WORKS INDOORS TOO!
Just clip one end of it to the telescopic antenna on the radio and connect the other end to a tree, a fence or other convenient object. Indoors the wire can be run across the ceiling or around a wall. The wire is 23 feet long and retracts into a compact palm size case that is easy to store or carry..