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50 / 75 Ω · IEC 60092-373

Marine Coaxial Communication Cable

A coaxial construction for radar, satellite and radio links where attenuation, screening effectiveness and flame performance all have to be met at once.

Impedance50 / 75 Ω
DielectricFoam PE / PTFE
ScreenFoil + braid
StandardIEC 60092-373
Product overview

Construction and performance

Radar, satellite and radio links are decided by attenuation and screening effectiveness. The foamed dielectric reduces loss per metre at high frequency, the bonded aluminium foil gives continuous coverage against the high-frequency field, and the tinned-copper braid provides a low-resistance path and mechanical strength. IEC 60092-373 covers the construction and flame performance of shipboard communication cable; the impedance must match the radio equipment, which is normally 50 Ω for marine radar and VHF.

Construction

  • Solid or stranded copper inner conductor
  • Foamed PE or solid PTFE dielectric
  • Aluminium foil plus tinned-copper braid screen
  • LSZH or SHF1 sheath
  • Flame retardant to IEC 60332-1-2
  • Connector compatibility confirmed to project

Applications

  • Shipborne radar systems
  • Satellite communication terminals
  • VHF and UHF radio links
  • On-board RF and antenna distribution

Technical data

Impedance 50 Ω or 75 Ω
Inner conductor Solid or stranded copper, copper-clad aluminium
Dielectric Foamed PE or solid PTFE
Screen Aluminium foil plus tinned-copper braid
Sheath LSZH or SHF1 compound
Frequency range Up to 6 GHz depending on construction
Velocity of propagation Approximately 80–85% for foamed dielectric
Construction standard IEC 60092-373, IEC 61196

Typical values. Final construction is confirmed on the order datasheet.

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Selection notes

What to confirm before ordering

How is attenuation specified?
Attenuation is quoted in dB per 100 m at a stated frequency, normally 100 MHz, 400 MHz, 1 GHz and 2.4 GHz for marine radar and satellite runs. The required value follows from the transmitter power and the receiver sensitivity, not from the cable alone.
Can a 75 Ω cable replace a 50 Ω type?
No. Impedance mismatch at the connector and at the antenna introduces reflection loss. The cable impedance must match the radio equipment, which for marine radar and VHF is normally 50 Ω.
Is a foil-and-braid screen necessary?
For radar and satellite runs, yes. The foil gives continuous coverage at high frequency and the braid provides a low-resistance path and mechanical strength. A braid-only screen is used only for short, low-frequency runs.

Standards & type approval

IEC 60092-373, IEC 61196 series for coaxial test methods, IEC 60332-1-2 flame propagation, IEC 60754 and IEC 61034 for halogen and smoke performance.

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Need a sample or datasheet?

Tell us the voltage, core count, cross-section, screen or armour, sheath and destination. We can prepare a construction drawing and a sample for review.

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