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RG223/U coaxial cable

Designed for precision RF applications, the RG223/U coaxial cable is a 50-ohm solution offering stable performance up to 6 GHz. Its double shielding with silver-plated copper and compliance with MIL M17/194-00001 ensure excellent signal integrity in marine environments. It is sold by the linear meter and is compatible with connectors from the U9 cable group.

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4,93€

4,93€ ~~5,60€~~

4,93€ m

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Available in stock

Free pickup point from €150 in France
Pickup at Skysat possible

Custom installation

Trust Skysat to install the equipment on board

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Installers near you

thanks to our network of approved installers

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Support service

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Technical specifications

Cross-section (mm²)	0.61
Wire gauge (AWG)	19
Number of conductors	1
Color	Black
Max voltage	2500
Shielding	Shielded
Flexibility	Flexible
Current type	Signal/Data
Outer diameter	5.4 mm
Jacket material	PVC
Conductor material	Copper
Certifications	MIL
Conductor finish	Unfinished
Cable type	Coaxial cable
Compatible network	VHF, AIS, Radio Frequency (RF)
Pre-molded connectors	No
Installation location	Indoor/Outdoor, Marine
Cable application	VHF / AIS antenna
Operating temperature	-25 °C to 85 °C
Storage temperature	-25 °C to 85 °C
Min bend radius	30 mm
Connector type	Not included
Shielding type	Double braid
UV resistance	Not specified
Outer diameter of cable (mm)	5.4
Conductor construction	Single-core
Product type	Coaxial cable

Detailed description

Designed for precision RF applications, the RG223/U coaxial cable is a 50-ohm solution offering performance up to 6 GHz. This cable meets the requirements of MIL M17/194-00001 standard (formerly M17/84-RG223), attesting to its reliability in demanding environments. Its design includes a silver-plated copper center conductor of 0.88 mm, a polyethylene (PE) dielectric of 2.95 mm, and a double silver-plated copper braid shielding (96% at 3.6 mm, 94% at 4.2 mm), ensuring excellent shielding effectiveness of 85 dB across a frequency range from 0.0001 GHz to 1 GHz.

Electrical and Mechanical Specifications of RG223/U Cable

With an impedance of 50 Ω ±1Ω and a capacitance of 101 pF, the RG223/U coaxial cable ensures stable and fast signal transmission, with a propagation velocity of 66% and a delay of 5 ns/m. Its insulation resistance is 100,000,000 MΩ*m and the internal conductor resistance is 27.7 Ω/km. The cable is designed for a maximum operating voltage of 2.5 kV and a test voltage of 5 kV (50 Hz/1 min), making it suitable for various marine and industrial applications.

Mechanically, the cable weighs approximately 55 g/m and has a static bending radius of ≥ 30 mm and a repeated bending radius of 54 mm, providing flexibility for installation while maintaining structural integrity. The 5.4 mm diameter PVC II jacket (low migration, RAL 9005 - black) ensures protection against environmental stresses. The RG223/U coaxial cable operates within a temperature range of -25 °C to 85 °C and can be installed between -20 °C and 60 °C. It contains halogens, a characteristic to consider for specific fire safety standards.

Compared to cables like the RG58, the RG223/U stands out for its double shielding, which provides better immunity to electromagnetic interference and superior performance at higher frequencies, up to 6 GHz. This makes it a choice for systems requiring increased signal integrity, such as radars, advanced VHF/UHF communication systems, or high-speed data networks onboard. It is compatible with U9 cable group connectors.

Documentation

Type	Nom
	Koax24 RG223/U datasheet

Expert opinion

Pol CONIN

Digital Manager

« Technical analysis of RG223/U coaxial cable for marine applications »

The RG223/U coaxial cable is a proven standard for RF links requiring superior signal integrity in marine environments. Its compliance with MIL M17/194-00001 is not trivial; it ensures rigorous manufacturing and performance, essential for critical onboard applications. Unlike standard RG58, the RG223/U features double silver-plated copper shielding, a key characteristic for mitigating electromagnetic interference (EMI) common in vessel environments, particularly near engines, generators, or other electronic equipment. This design provides 85 dB of shielding effectiveness up to 1 GHz, which is critical for maintaining signal quality at high frequencies up to 6 GHz.

This cable is particularly suited for radar installations, AIS Class A/B systems, high-performance marine VHF/UHF radios, or demanding data networks where insertion loss and impedance stability (50 Ω) are critical. It is recommended for use when cable lengths are significant or when routing through areas with strong electromagnetic interference. While installation requires skills in crimping or soldering U9-type coaxial connectors, similar to other coaxial cables, the quality of materials (silver-plated conductors and shields, low-migration PVC II jacket) ensures enhanced durability against moisture, UV, and temperature variations (-25 °C to 85 °C in operation). Note its halogen-free composition, which may be a consideration in environments subject to strict fire safety standards.

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RG223/U coaxial cable

4,93€

4,93€ ~~5,60€~~

4,93€ m

Frequently Asked Questions

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What are the main technical specifications of the RG223/U coaxial cable?

RG223/U coaxial cable is a 50-ohm solution designed for precision RF applications. It supports frequencies up to 6 GHz and offers a shielding effectiveness of 85 dB between 0.0001 GHz and 1 GHz. Its construction includes a silver-plated copper center conductor, a polyethylene (PE) dielectric, and a double silver-plated copper braid shield. The jacket is 5.4 mm in diameter and made of PVC II (low migration).

What is the characteristic impedance of this coaxial cable?

The characteristic impedance of RG223/U coaxial cable is 50 Ω (Ohms), with a tolerance of ±1Ω. This impedance is standard for many RF and telecommunications applications.

For which frequencies is the RG223/U coaxial cable suitable?

RG223/U coaxial cable is suitable for applications operating up to a maximum frequency of 6 GHz. It is specifically designed for precision use within this frequency range.

What materials are used in the construction of RG223/U cable?

RG223/U cable is manufactured with high-quality materials to ensure performance and durability:

The center conductor is silver-plated copper. The dielectric is made of polyethylene (PE). The outer conductors (shielding) consist of a double silver-plated copper braid. The jacket is made of PVC II (low migration) in black (RAL 9005).

What are the recommended operating and installation temperatures for this cable?

The RG223/U coaxial cable is designed to operate within a temperature range of -25 °C to 85 °C. For installation, the ambient temperature must be between -20 °C and 60 °C to ensure the cable remains flexible and maintains its integrity during laying.

Which types of connectors are compatible with RG223/U cable?

The RG223/U coaxial cable belongs to the U9 cable group. This means it is compatible with connectors specifically designed for cables in this group, such as BNC, TNC, or N connectors adapted for RG223 cables, ensuring a reliable connection and optimal performance.