The real deal on a PL-259 vs a UHF Male connector

PL-259 vs UHF Male Connector

Understanding the Naming Difference in UHF-Series RF Connectors

One of the most common questions in RF, amateur radio, CB, and commercial radio systems is whether a “PL-259” connector is different from a “UHF Male” connector.

In normal radio and RF terminology, they are effectively the same connector.

The Simple Answer

PL-259 is the traditional part-number style name for the connector.

UHF Male is the generic descriptive name for the same connector type.

Both terms normally refer to the same male RF connector used in the UHF-series connector family.

Matching Female Connector

The mating female connector is commonly called:

SO-239
UHF Female

These terms also refer to the same connector type.

Connector Family Relationship

Traditional Name	Generic Name	Connector Gender
PL-259	UHF Male	Male
SO-239	UHF Female	Female

Typical Characteristics

Characteristic	Typical Details
Connector Family	UHF Series
Common Thread	5/8-24 UNEF
Typical Impedance	Non-constant impedance design
Common Frequency Range	HF, low VHF, and many general radio applications
Typical Cable Types	RG-58, RG-8X, RG-213, RG-214, LMR-400 and similar coax

Why It Is Called a “UHF” Connector

The name “UHF connector” is historical terminology dating back to the 1930s and 1940s. At that time, frequencies above approximately 30 MHz were considered “Ultra High Frequency.”

Today, the connector is commonly used on:

HF amateur radio systems
CB radio systems
Mobile radio installations
Marine radios
Base station antennas
Test equipment
General RF interconnect applications

Important Technical Note

The UHF-series connector family is not a true constant-impedance connector design. Because of this, performance gradually degrades as frequency increases.

For microwave and precision RF applications, connectors such as:

N-Type
BNC
TNC
SMA
7/16 DIN

are generally preferred.

Common Misunderstanding

Many people assume “PL-259” and “UHF Male” are different connector styles. In most radio industry usage, they are simply two different names for the same connector.

Simple Summary

PL-259 = UHF Male

SO-239 = UHF Female

Technical Note: Some manufacturers and catalogs may use either the traditional military-style naming convention (PL-259 / SO-239) or the generic descriptive naming convention (UHF Male / UHF Female). In nearly all cases they refer to the same connector family.

Educational reference for RF, amateur radio, CB, telecom, and coaxial connector systems.

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