The Codan 9350 antenna can tune down to the 160m amateur band with the aid of adding a small
extension to the antenna. There is a catch - you may lose one or two of the upper bands. Simply remove the extension to get them back!
Extension with covering.
The extension was covered with heatshrink tubing. Hot melt glue
was used either end. When both were heated, the heatshrink would reshape the softened glue to form a tight weatherproof seal.