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Balun Rack

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Tel: 410-583-1701     Email: Sales & Technical


  • Conversion between dual 75 ohm coax interface and twisted pairs for E1 applications (2.048 Mbps)
  • Available in 8 or 16 ports
  • Enables standard ISDN primary rate installation over existing coax cables
  • No AC or DC power required
  • Insensitive to signal direction
  • Immediate installation
  • Miniature, lightweight Balun


  • The Balun (coax to twisted pair converter) enables any E1 equipment with coax interface to operate over two twisted pairs (4-wire interface), as shown in Figure 1.
  • Balun Racks back-to-back allow 4-wire ISDN equipment to operate over existing coax cables (see Figure 2).
  • The Balun is insensitive to the direction of the signal, allowing transmit and receive lines to be reversed without affecting operation.
  • The E1 Balun is a miniature, lightweight Balun. It operates without AC or DC power and provides up to 1000V isolation voltage for protection against AC and DC over voltage on the line