PackTenna uses full-size, no compromise, wire antenna elements. The 20/40 antenna wire set includes 4 pre-assembled 1/4 wave wire elements cut for the 20m band. This allows you to set up your antenna on 20m, or 40m by putting two elements in series. The wire is a very high quality hard drawn copper "litz" wire that is very flexible with a polyethlene outer jacket. The wire elements use our S-Clips to connect elements together and provide strain relief with small pigtails and high surface area, gold plated, mini banana plugs to make the electrical connection between elements. Using resonate wire elements eliminates the need for an antenna tuner. This is especially convenient for backpacking and highly portable ops.