Single Band Two half-wave Element Collinear Array gives you nearly 2 dB gain -- about 150% power gain -- and twice the receiving capture area of a half-wave dipole.  Direct coax feed and low SWR across the band.  Two elements give 2 dB gain, they are very quiet and handle 1500 Watts. Virtually Hang and Play when you receive them.  No cutting, soldering, tuning, or trimming needed. Follow easy set-up instructions and you're on-the-air! This one factory set for resonance on 15-Meters.