Alpha Delta Single Band Full Size Dipole Antennas are assembled half-wave monoband dipole antennas. They are pre-tuned for the lowest indicated frequency and come with the correct amount of mounting rope. These antennas may be tuned for any frequency from 14.0 to 30 MHz by shortening the wire lengths according to the supplied instructions. They are constructed with a Delta-C Center Insulator with built-in SEP static electricity protectors and are fully assembled using stainless steel hardware, 12-gauge PVC-insulated high-strength solid copper wire, and DELTA-CIN End Insulators. The center insulators feature SO-239 (UHF female) connectors to accept the PL-259 on your coaxial cables. These antennas will easily handle full legal power.