Flush Mount G.fast Balun

Model: Flush Mount G.fast Balun


The Comtest Networks Flush Mount G.fast baluns provide the perfect in-unit solution for interfacing between coax cabling and the DSL modem or media gateway. The baluns can be installed in any standard telephone outlet for clean and efficient connection. This innovative design is the perfect complement to the Comtest Universal G.Fast balun.

The Comtest G.fast balun is a passive in-line device designed to convert a G.fast signal carried on a balanced twisted pair cable to an unbalanced 75Ω coax cable (and vice versa). Our baluns are designed for homes or buildings lacking telephone wiring or that have inadequate twisted pair wiring, and provide a method to bring video programming and high speed broadband services into the premises using the existing wiring.

G.fast promises to deliver gigabit speeds over short lengths of standard twisted pair Telco cable; this reach can be optimally extended via coax to businesses and MDU environments. Capitalizing on the ultra-broadband capabilities of G.fast, these higher bandwidths can be pushed further and further into rural areas and older neighborhoods.


  • Converts balanced twisted pair signal to 75Ω unbalanced signal
  • Allows coax to be used to transmit G.fast where twisted pair is unavailable or insufficient
  • Installed in any standard in wall telephone outlet inside the home
  • Simple installation for quick turn up



70.9mm x 37.3mm x 16.5mm (H x W x D) (2.79” x 1.47”x 0.65”)

Operating Temperature

-40 to +65 °C 

-40 to +149 °F


100g (0.2lbs)

Communications Interface

75Ω unbalanced: F-Type Coaxial Connector, 100Ω balanced: RJ-11


1 Subscriber loop per line unit


Compliant to CSA/UL Standards

Ordering information

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Flush Mount G.fast Balun