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75 Ohm Coaxial Underwater Cable | Subsea Video Transmission

Published on:2026-05-24 Click:15

75 Ohm Coaxial Underwater Cable | Subsea Video Transmission

Single 75 ohm coaxial underwater cable with PUR jacket. Depth-rated for ROV and subsea camera video transmission. RG59/RG6 equivalent, custom lengths.

Product introduction

75 Ohm Underwater Coaxial Cable for ROV and Subsea Video

A dedicated 75-ohm coaxial underwater cable for single-channel video transmission in ROV and subsea camera systems. Built to RG59/RG6 equivalent specifications and encased in a PUR outer jacket, this cable delivers stable video performance in seawater environments, from shallow coastal deployments to deep offshore applications.

Parameter Specification
Impedance 75 Ohm
Standard RG59 / RG6 equivalent
Jacket Material Polyurethane (PUR)
Temperature Range -30°C to +80°C
Depth Rating Up to 3,000 m
Shielding Foil + tinned copper braid
Velocity of Propagation ~66% (polyethylene dielectric)
Connector Options BNC, TNC, custom waterproof

Key Applications

  • ROV single-camera video tether
  • Subsea CCTV single-channel video link
  • Underwater pipe internal inspection cameras
  • Port and harbour single-camera surveillance
  • Marine research single video sensor

Order custom-length coaxial underwater cables: sales@rovcable.com -- Shanghai Kabel Intelligence Technology Co., Ltd.

Frequently Asked Questions

What is the maximum video cable run length?

For PAL/NTSC composite video at 75 ohms, reliable transmission is achievable up to 300 m with this cable before signal degradation becomes significant. For longer runs, video amplifiers or digital video (HD-SDI) with appropriate equalisation should be used.

Can you supply this cable with waterproof BNC connectors?

Yes. We supply this cable pre-terminated with subsea-rated waterproof BNC connectors, rated to 3,000 m. Custom connector types are also available on request.

Applications

  • Underwater cable assemblies for ROV, AUV and subsea vehicle power and signal delivery
  • Subsea sensor and instrument cabling requiring flexible, abrasion-resistant PUR jackets
  • Marine renewable energy cable connections, offshore platform and coastal installations
  • Underwater lighting, camera and video system cable assemblies with connector terminations
  • Custom umbilical cables for oceanographic research and temporary subsea deployments

Customization Options

  • Custom cable lengths from 1m to 1000m+ with specified conductor counts and gauges
  • Direct moulding termination to any ROV Connector series for complete cable assemblies
  • Neutral buoyancy options, Kevlar reinforcement and specialized jacket colors available
  • Certified cable tension, flex and pressure testing with full test documentation
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