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Five brass F-81 coaxial couplers with blue insulators

The Wires Zone

The Wires Zone F-81 Coupler 3/4" Long Barrel 5 Pack

SKU CH-QAAT-ANCSY

Five F-81 couplers join RG6 or RG59 coax with 2.5 GHz bandwidth and 0.20 dB insertion loss

  • Supports 2.5 GHz bandwidth for broadband networks
  • Flat-ended F port meets SCTE IPS-SP-407 for improved contact
  • Precision-machined CDA360 brass ensures durable construction
  • Low 0.20 dB insertion loss maintains signal quality
  • Pack of five female-to-female couplers for RG6 or RG59 cables

F-81 Coupler for RG6 and RG59

This pack of five F-81 couplers joins two RG6 or RG59 coaxial cables into a single run. Each unit is a female-to-female adapter built for broadband distribution systems. Installers and DIY users extending cable drops in residential or light commercial settings will find them fit for purpose.

Installation notes and common issues

The flat-ended, small-aperture F port meets SCTE IPS-SP-407 for improved contact and high return loss. Precision machined CDA360 brass construction with a blue insulator and phosphor bronze centre contact gives a 360° round seizing action. Over-tightening can damage the centre contact spring tension; hand-tight plus a quarter turn is sufficient.

Capacity and headroom

Rated for 2.5 GHz bandwidth with insertion loss of 0.20 dB maximum and return loss of -24 dB minimum at 2.5 GHz, they handle high-frequency broadband signals up to 3 GHz. The 8 ampere DC continuous current capacity supports powered devices on the line. Runs exceeding the rated frequency or current will see degraded performance.

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

How can I confirm the F-81 couplers are performing correctly after installation?

Check for a clean signal with minimal loss; each coupler is rated for 0.20dB maximum insertion loss and -24dB minimum return loss at 2.5GHz.

What comes in the package and what extra items are needed?

The pack contains five F-81 female-to-female couplers; you must supply your own RG6 or RG59 coaxial cables to connect.

Which version should I choose for a 2.5GHz broadband distribution system?

These couplers are engineered for high-frequency broadband networks up to 3GHz and meet SCTE IPS-SP-407, making them suitable for 2.5GHz systems.

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