1.6/5.6 (L9) RF Coaxial Connectors are compact, threaded or snap-lock RF interconnects widely used in video, CCTV, and telecommunication transmission systems. The designation "1.6/5.6" refers to the 1.6mm inner conductor and 5.6mm outer conductor dimensions that define this interface standard, distinguishing it from larger series such as 7/16 or N type. Engineered to maintain stable 75Ω impedance, 1.6/5.6 (L9) RF Coaxial Connectors are designed for miniaturized, high-density installations where multiple connections are terminated within a limited panel space, commonly found in broadcast equipment, CATV distribution systems, and digital transmission racks.
As a connector category, 1.6/5.6 (L9) RF Coaxial Connectors are produced in multiple configurations to accommodate different cable types and mounting requirements, including straight and right-angle plugs, bulkhead jacks, and terminations for both flexible and semi-flexible coaxial cable. Components are typically machined from brass or phosphor bronze and finished with nickel or gold plating, providing the conductivity, durability, and repeated mating cycles required in professional video and data transmission equipment.
Common Types and Characteristics
| Type |
Mounting/Termination |
Gender |
Typical Impedance |
Key Characteristics |
| 1.6/5.6 Straight Plug |
Cable mount (clamp/crimp) |
Male |
75Ω |
General-purpose termination for video and data cable |
| 1.6/5.6 Bulkhead Jack |
Panel mount (single hole) |
Female |
75Ω |
Compact panel fixation for high-density installations |
| 1.6/5.6 Right Angle Plug |
Cable mount (clamp/crimp) |
Male |
75Ω |
Space-saving routing in compact equipment racks |
| 1.6/5.6 PCB Mount Connector |
Board mount |
Female |
75Ω |
Direct board-level connection for transmission modules |
Application Scenarios and Selection Points
1.6/5.6 (L9) RF Coaxial Connectors are applied in CCTV and video surveillance systems, CATV distribution networks, telecom transmission racks, and broadcast equipment where compact, high-density coaxial connections are required. When selecting a connector from this category, the following points are recommended for confirmation:
- Cable type and diameter — flexible or semi-flexible coaxial cable, matched to the connector's termination structure
- Mounting method — cable mount for jumper leads, bulkhead or panel mount for equipment fixation, or PCB mount for board-level integration
- Impedance matching — 75Ω configuration confirmed against the video or data transmission system requirements
- Plating material — nickel plating for general durability, gold plating for improved conductivity and corrosion resistance
- Installation density — compact form factor suited for multi-channel racks and distribution panels
1.6/5.6 (L9) vs. Other Common RF Connector Series
| Series |
Interface Size |
Typical Impedance |
Typical Application |
| 1.6/5.6 (L9) |
Compact |
75Ω |
Video, CCTV, CATV, high-density transmission racks |
| BNC |
Medium |
50Ω / 75Ω |
Test equipment, broadcast video, general RF connections |
| 7/16 (L29) |
Large |
50Ω |
Base station feeders, high-power RF transmission |
FAQ
Q: What does the "1.6/5.6" designation refer to?
A: The designation refers to the connector's 1.6mm inner conductor diameter over the 5.6mm outer conductor diameter, which defines the mechanical interface of this connector series.
Q: What is the typical impedance of these connectors?
A: 1.6/5.6 (L9) RF Coaxial Connectors are typically configured for 75Ω impedance, matching common video and CATV transmission standards.
Q: What mounting options are available in this category?
A: This category includes cable mount plugs, bulkhead panel jacks, right-angle types, and PCB mount connectors, covering jumper leads, panel installation, and board-level connections.
Q: Are these connectors suitable for high-density installations?
A: Yes, the compact form factor of 1.6/5.6 (L9) connectors makes them suitable for multi-channel racks and distribution panels where space is limited.
1.6/5.6 (L9) RF Coaxial Connectors in this category are manufactured by Yangzhou Jingcheng Electronics Co., Ltd., a company specializing in RF coaxial connector design and production since 1999, supported by advanced manufacturing equipment and high precision testing capability across the full 1.6/5.6 (L9) connector range.
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