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16 Port G.703 75 -120 ohm Balun 19 inch rackmount panel 2U

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


3 In Stock
Same Day Shipping (before 5PM ET)
Extended Double Diamond™ Warranty Available (3 Additional Year)

*Required field

Product Features

  • Get 16 75-ohm to 120-ohm conversions in one convenient rackmount chassis.
  • Speeds up to E1 (2.048 Mbps).


  • Bidirectional signal conversion.
  • No AC power or batteries needed.
  • Low-profile design.

    Connect your 75-ohm dual-coax hardware to a 120-ohm, twisted-pair G.703 network with the Balun Mate from Black Box. You can also use the Balun Mate to make 120-ohm terminations on your 75-ohm network. The Balun Mate is a panel that bidirectionally matches both the signal impedance and the pulse shapes according to the G.703 standard.

    The Balun Mate (MT243A) is an entire system that includes a chassis (RM243A) and 16 modules (MT243C-F), which can also be ordered separately, see "Related Products." The Balun Mate fits in a standard 19" rack.

  • Tech Specs

    CE Approval Yes
    Connectors 75-ohm: Dual coax BNC F; 120-ohm: Shielded RJ-45 jack (internal terminal block included)
    Power From the interface
    Size Chassis: 3.5"H x 19"W x 1.9"D (8.9 x 48.3 x 4.8 cm)
    Speed 2.048 Mbps
    Transmission Line G.703 (unstructured)
    Weight 2.5 lb. (1.1 kg)

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




    Double Diamond Warranty

    Extended 1 Year Warranty Available

    Protect your purchase with an additional 1 Year Double Diamond™ warranty!
    Cost: $104.60

    Extended 3 Year Warranty Available

    Protect your purchase with an additional 3 Year Double Diamond™ warranty!
    Cost: $209.19


    Double Diamond™ Warranty (Standard)

    Take the risk out of equipment purchases with the Double Diamond™ Warranty from Black Box Network Services.

    The Double Diamond Warranty is our warranty that protects your Black Box® brand products* from accidental damage, including drops, water, and power surges.

    The 16 Port G.703 75 -120 ohm Balun 19 inch rackmount panel 2U comes with a standard 1 Year Double Diamond™ Warranty (Standard) already included.

    During the warranty period, Black Box Network Services will repair or replace your damaged equipment within one week of receipt at NO CHARGE!*

    Plus, get an Extended Double Diamond Warranty.

    You can also extend your warranty or protect a previously purchased Black Box® brand product** for an additional year—for only 10% of the purchase price! Or, extend your coverage for a full three years for only 20% of the purchase price!

    Ordering an extended warranty is easy: When viewing a product in your shopping cart, just select the one or three years of additional coverage in the dropdown menu under “Warranty Options.” For details, contact Customer Service at 724-746-5500.

    * Warranty subject to certain exclusions and limitations ** Certain products may not be eligible.

    What’s more, we also have a 45-day return policy. Simply call Customer Service for a Return Authorization (RA) number, return your product in new condition and in the original package, and receive a full refund.