IEC 60966-2-8:2025

Overview

IEC 60966-2-8:2025 is an international standard published by the International Electrotechnical Commission (IEC). It provides a detailed specification for radio frequency (RF) and coaxial cable assemblies specifically designed for radio and TV receivers. This second edition, published in 2025, covers cable assemblies with F-Quick connectors conforming to IEC 61169-47 and requires quad-shield screening class A++ as defined by IEC 61196-6-5. The standard supports frequency ranges up to 3,000 MHz and introduces technical revisions including right-angled connector configurations and updated performance criteria.

This standard ensures compatibility, reliability, and optimal signal integrity of coaxial cable assemblies used in high-frequency broadcast reception systems, fostering global uniformity in product specifications and testing practices.

Key Topics

• Scope and Application
  Applies to 75 Ω impedance cable assemblies for radio and TV receivers, using F-Quick male connectors either straight or right-angled. Quad-shielding (screening class A++) guarantees effective electromagnetic interference (EMI) protection.

• Technical Specifications

  • Frequency range: DC to 3,000 MHz
  • Connector body maximum diameter: < 16.6 mm
  • Typical weight: 100 g/m
  • Screening effectiveness: Transfer impedance ≤ 0.9 mΩ/m (5 MHz to 30 MHz), Screening attenuation ≥ 85 dB (up to 3,000 MHz)
  • Reflection properties (Return loss) and insertion loss values vary between straight and right-angled connectors to match different installation conditions.

• Performance Criteria

  • Return loss values: ≥ 23 dB up to 1,000 MHz for straight connectors, adjusted for right-angled types.
  • Insertion loss calculated with factors that consider cable length and frequency, providing precise guidelines for signal decay management.
  • Maximum DC loop resistance capped at 1 Ω over the complete cable length for high-quality signal transmission.
  • Mechanical endurance tests include tensile strength, flexure, flexing endurance, and crushing resistance to assure robust field performance.

• Marking and Identification
  Standardized marking requirements include the assembly’s type name, screening class, IEC standard number, and manufacturer’s ID to facilitate traceability and quality assurance.

• Testing and Quality Assurance
  Compliance verification through electrical testing (voltage proof, insulation resistance, insertion loss), mechanical testing (tensile, flexure endurance), and screening effectiveness assessments performed as per IEC 60966-1 and related referenced standards.

Applications

• Broadcast Equipment
  This standard is critical for ensuring the high performance of cable assemblies used in radio and television receiver systems, including residential, commercial, and broadcast infrastructure.

• Cable Network Installations
  Appropriate for cable drop lines, set-top box connections, antenna feeds, and other coaxial cable linkages requiring efficient shielding and minimal signal loss up to 3 GHz.

• Consumer Electronics
  Supports manufacturers designing cables that interface with consumer radios and televisions, improving compatibility and signal fidelity in diverse environments.

• Professional and Industrial Installations
  Utilized in professional media environments where precise frequency handling and EMI protection are essential for reliable broadcast quality.

Related Standards

• IEC 60966-1:2019 – Generic specification for radio frequency and coaxial cable assemblies outlining general requirements and test methods used as a baseline for this detail specification.

• IEC 60966-2-1 – Sectional specification for flexible coaxial cable assemblies used alongside IEC 60966-2-8 for qualification procedures.

• IEC 61169-47 – Defines the F-Quick type RF connector specifications employed in these cable assemblies.

• IEC 61196-6-5:2020 – Specifies quad-shield CATV drop cables with screening class A++ which form the cable basis in this standard.

• IEC 62153-4-7 – Test methods related to electromagnetic compatibility (EMC), vital for screening assessment like transfer impedance and attenuation factors.

Summary

IEC 60966-2-8:2025 plays a crucial role in defining technical and quality standards for coaxial cable assemblies used in radio and television applications. By harmonizing connector specifications, shielding effectiveness, electrical and mechanical performance criteria, this standard ensures reliable high-frequency operation and optimal noise rejection. It thereby supports manufacturers, network operators, and end users in achieving consistent, high-quality signal transmission in their radio frequency cable assemblies up to 3,000 MHz.

Adhering to this standard guarantees that cable assemblies are robust, compatible, and efficient, meeting both industry expectations and international compliance requirements.