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G.703 Balun Module - Female, 75-120-ohm

G.703 modules to convert 75-ohm dual coax hardware to 120-ohm, twisted pair.

Item #:  G.703 Balun Module - Female, 75-120-ohm


Call 877-877-2269 for pricing and to place order.
Please Note: Once ordered, this product cannot be cancelled or returned for credit.
Call for Pricing
*Price excludes GST

Product Features

  • Use with our Balun Chassis to build a Balun Mate with only as many conversions as you need.
  • Matches the signal impedance and the pulse shape of the signals
  • According to the ITU G.703 standards.


G.703 75–120 ohm Balun 2.048 Mbps, Female. Features transformer isolation for protection against ground loops. Models support 2.048-Mbps speeds. Use G.703 75 - 120 ohm Adapters to connect your G.703 network to your shielded twisted-pair equipment. These adapters address the open network provision (ONP) requirement that European post, telephone, and telegraph (PTT) authorities offer 120-ohm twisted-pair terminations to their customers.Use the adapters to convert the balanced G.703 signals from your bridges and routers to unbalanced G.703 signals. So you can use your 75-ohm coax hardware and communicate with 100-ohm or 120-ohm twisted-pair equipment. The adapters convert signals bidirectionally, too. Setup is super easy. Just plug in the adapters. If needed, you can configure the shield connection between the 75-ohm and twisted-pair interfaces. The G.703 75–120 Adapters support E1 data rates to 2.048 Mbps. For sending TX and RX signals over STP cable, order the MT256A-F, which has 1.6/5.6 dual-coax connectors. The G.703 75 - 120 ohm High-Speed Adapters support data rates to 8 Mbps.

Tech Specs

* Technical specification weight is the unit weight. It is not the packaged shipping weight. For shipping weight, please contact Black Box customer service at 1-877-877-2269.



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