Feeders

Balanced Line

  • 16 SWG conductors about 115mm apart has an impedance of about 600Ω;  often built using spacers – open wire line
  • Twin (Window) line is available in impedances of 300 and 450Ω – ladder line
  • 75Ω twin balanced line with conductors embedded in polyethylene is also available – twin feeder
  • Balanced line may be unbalanced by proximity to metal or earthed objects