Belden 7731A / RG11 Foam Coaxial Cable

  • Perfect for your HF 160m / 80m /40m Four Square Array phasing cables or other phased arrays
  • RG11/U Type Coaxial Cable
  • 75 Ohm Characteristic Impedance
  • Foam Dialectric
  • Velocity Factor 0.85
  • 95% Tinned Copper Braid
  • 100% Aluminium Foil Cover
  • Black PVC outer so outdoor rated.
  • Overall diameter 10.16mm

Price excl VAT: £3.87
incl VAT: £4.64


RG-11/U type,

14 AWG solid .064″ bare copper conductor,

Gas-injected foam HDPE insulation,

Duofoil® + tinned copper braid shield (95% coverage),

PVC jacket.


If you are building a four square on the low bands (40/80/160) then this 75 Ohm RG11/U type cable is ideal for the phasing runs from the switching box to the individual antennas. It is foam filled so has a 85% velocity factor meaning it will reach from the antenna to the array switching box in a standard 1/4 wave length. A 1/4 wave of standard RG11/U with its lower velocity factor will be too short to reach.

Available cut to order in any length up to 305 metres. We can cut and measure for you to the nearest 1cm it you want a pre-cut set.


Download a datasheet on 7731A HERE