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Ten brass F81 couplers with blue insulators, 3/4 inch barrel, female to female

The Wires Zone

The Wires Zone F81 Coax Coupler 2.5GHz 10 Pack

SKU CH-ES4X-YCBXZ

Ten F81 couplers join RG6 or RG59 coaxial cables with 2.5 GHz bandwidth and 0.20 dB maximum insertion loss

  • 5 GHz bandwidth supports high-frequency broadband networks up to 3 GHz
  • Precision-machined CDA360 brass body ensures durable, corrosion-resistant connections
  • Flat-ended SCTE IPS-SP-407 compliant port delivers -24 dB minimum return loss
  • 360° round seizing center contact provides high spring tension for repeat insertions
  • Pack of 10 female-to-female adapters connects RG6 or RG59 coax cables

Coax Coupler 10 Pack

The Wires Zone F81 coupler joins two RG6 or RG59 cables in a straight female-to-female connection. Each unit uses a 3/4-inch barrel machined from CDA360 brass with a blue insulator and phosphor bronze center contact. The pack supplies ten identical adapters for residential or light-commercial coaxial distribution.

Upgrade From Loose Fittings

Installers replacing worn twist-on splices or low-spec barrels gain a flat-ended small-aperture port that meets SCTE IPS-SP-407 for improved contact and high return loss. The 360-degree seizing center contact maintains spring tension through repeated insertions, making the step worthwhile when signal integrity at higher frequencies matters.

Capacity And Headroom

Rated to 2.5 GHz with insertion loss of .20 dB maximum and return loss of -24 dB minimum, the couplers handle broadband network and distribution system applications engineered to 3 GHz. An 8-ampere DC continuous current capacity supports inline power schemes, while the brass construction resists corrosion in indoor or protected outdoor runs.

How it compares

Measured against everything we stock in Wire Connectors & Cable Ties, at today’s prices. Recalculated every night.

Price $8.99
Cheaper than about 67% of the 1,040 comparable items (median $13.99).

Specifications

No published specifications for this item yet.

Questions about this item

What cable diameter fits the 3/4" long barrel on these F81 couplers?

The 3/4" long barrel accepts standard RG6 and RG59 coaxial cables with male F-connectors already attached.

How do you install the coupler without damaging the phosphor bronze centre contact?

Thread each male F-connector onto the female ports by hand until seated, then snug with a wrench; forcing the connector can bend the 360° spring-contact.

When should a coupler be replaced in a 2.5 GHz distribution system?

Replace if insertion loss rises above 0.20 dB or return loss degrades below -24 dB at 2.5 GHz, indicating worn contacts or corrosion.

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