20 Metre Pro Extension Cable - Low Loss (N-Type Male to N-Type Female)HDF400 Cable Extension Lead 20 Metre length cable made from a Low Loss Coaxial Cable (HDF400) Approx 0. 22db loss per Metre for 2. 4GHz applications. Approx 0. 36db loss per Metre for 5GHz applications Gold Nickel Plated contacts High Quality N Type Male and N Type Female connectors WiFi Antennas A division of Allendale Electronics, a family run British company founded in 2003. Our roots are firmly based in the UK, with a head office and inspection