UHF Connectors (PL-259 / SO-239)

Overview of UHF Connectors

UHF connectors, commonly identified as PL-259 and SO-239, are coaxial interfaces used in low- and medium-frequency RF applications where mechanical robustness, ease of installation, and continuity with widely adopted standards are required. This category includes UHF connectors for cable and panel mounting, suitable for connecting coaxial cables, antennas, radio equipment, and traditional RF systems.

PL-259 and SO-239: Differences and Configurations

In technical and commercial language, PL-259 normally refers to the male cable connector, while SO-239 identifies the female receptacle, often used for panel, flange, or bulkhead mounting. Correctly distinguishing these configurations is important when selecting the right component according to the interface to be connected, the installation type, and the required mechanical compatibility.

• PL-259 male connector for coaxial cable termination
• SO-239 female receptacle for panel, flange, or bulkhead mounting
• Straight or right-angle versions depending on the model
• Solder-type solutions or versions with mechanical fixing

UHF Connectors for Cable and Panel Mounting

The category includes configurations designed both for cable termination and for installation on panels or equipment. UHF cable connectors are used when direct termination of the coaxial cable is required, while panel or bulkhead versions are suitable for chassis, enclosures, antenna interfaces, and RF equipment. The choice between these solutions depends on the system structure, the required connection type, and the intended mounting method.

Compatibility with Coaxial Cables

The selection of the UHF connector also depends on the coaxial cable family and diameter. This category includes versions compatible with different cable types, including solutions for RG-58, RG-213, and other equivalent diameters. For correct selection, it is always recommended to verify the termination type, cable diameter, mechanical compatibility, and the clamping or fixing configuration required by the model.

How to Choose the Right UHF Connector

To identify the most suitable component, it is advisable to consider a few practical criteria: connector gender, cable or panel mounting, termination type, coaxial cable family, and interface configuration. In more demanding RF or higher-frequency applications, families with controlled impedance may be preferable, while UHF connectors remain a widely used solution for traditional radio systems, antenna connections, and installations where robustness and simplicity are key requirements.

Main Technical Features

• Threaded coupling for a stable and mechanically secure connection
• Robust construction suitable for radio installations, antenna systems, and traditional RF equipment
• Non-constant impedance family, typical of UHF connectors
• Availability of cable, panel, flange, and bulkhead versions depending on the model

Frequently Asked Questions

What is the difference between PL-259 and SO-239?

PL-259 is normally the male cable connector, while SO-239 is the female receptacle, often used for panel or equipment mounting.

Are UHF connectors suitable for high frequencies?

They are mainly used in HF, VHF, and RF applications where impedance continuity is not the primary requirement.

Which cables are compatible?

It depends on the model. Common options include versions for RG-58, RG-213, and other coaxial cables with equivalent diameters.

Do UHF connectors have a defined impedance?

No. The UHF family is characterized by a non-constant impedance structure.

Are panel-mount versions available?

Yes. SO-239 connectors are also available in panel-mount, flange-mount, or bulkhead versions depending on the model configuration.

For compatibility checks, special versions, or specific technical requests, contact us.