BNC / BNC: 20 meters ‧ Compatible with all BNC type antenna. ‧ Impedance: 50Ω ‧ Included: 2 cables and 2 BNC-F / BNC-F adapters.BNC / BNC: 20 meters ‧ Compatible with all BNC type antenna. ‧ Impedance: 50Ω ‧ Included: 2 cables and 2 BNC-F / BNC-F adapters.