SO239 Crimp Connectors SO-239 UHF Female Plug Crimp Coax Connector Adapter PL259 RF Connector for RG58 LMR195 RG400 RG303 RG141 RG142 Cable

A SO-239 UHF female crimp coaxial connector is a type of RF connector used to terminate coaxial cables that have an outer diameter of approximately 5mm. This connector is a female socket (SO-239), meaning it has an outer threaded barrel and a central pin receptacle. The “crimp” designation means that a crimping tool is used to secure the connector to the cable’s outer shield and jacket.

SO-239: This is the standard designation for the UHF female connector. It’s often used interchangeably with PL-259, which is the male version, but in this context, it specifically refers to the female jack. The connector is designed to be paired with a PL-259 male plug.
Crimp Termination: A metal ferrule or sleeve is placed over the cable’s outer jacket. After the cable is prepared, the ferrule is crimped onto the cable’s braided shield. This provides a strong, low-resistance mechanical and electrical bond.
Cable Compatibility: This connector is specifically designed for a range of smaller-diameter coaxial cables, including RG-58, LMR-195, RG-400, RG-303, RG-141, and RG-142. These cables are commonly used in applications such as ham radio, CB radio, and marine VHF systems.

Technical Specification

Impedance: 50 ohms. Like all UHF connectors, the impedance is non-constant, which can affect performance at very high frequencies.
Frequency Range: Best for HF and VHF applications, typically operating effectively up to 300 MHz.
Materials: The body is usually made of nickel-plated brass. The insulator is often PTFE (Teflon), and the contact pin is typically silver-plated brass for good conductivity.
Durability: The crimp method provides excellent mechanical strength and durability for the cable termination.

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