Specifications
UHF Female Flange Connector
UHF Family
The UHF connector (also known as PL-259 male / SO-239 female) is a large, low-cost RF connector designed in the 1930s for HF and VHF frequencies. Despite its name, its practical usable range is below 300 MHz due to its non-constant impedance design. It remains extremely popular in amateur radio (HF through VHF), CB radio, and marine radio applications.
Typical Applications
Amateur (ham) radio HF/VHF/UHF transceivers, CB radio, marine VHF radio, antenna switches and coax relays.
Gender & Polarity Note
This is a Female connector — it has a socket that accepts a male center pin. Female connectors are commonly used as panel-mount chassis connectors and bulkhead adapters.
Cables Available with UHF Female Flange
Select a cable type to see all connector pairings and pricing.
1.13
1.13MM • DC – 6 GHz
RG178
1.75MM • DC – 3 GHz
RG174
.1 INCH • DC – 3 GHz
RG316
.1 INCH • DC – 6 GHz
RFC100A
.1 INCH • DC – 6 GHz
RFC195
.195 INCH • DC – 6 GHz
RG58
.195 INCH • DC – 1 GHz
LMR195 Times
.195 INCH • DC – 6 GHz
RG142
.195 INCH • DC – 6 GHz
RG400
.195 INCH • DC – 6 GHz
RG316DS
.1 INCH • DC – 6 GHz
LMR100 Times
.1 INCH • DC – 6 GHz
1.37
1.37MM • DC – 6 GHz
RGU178
.06 INCH • DC – 6 GHz
Frequently Asked Questions
What frequency range does the UHF Female Flange connector support?
UHF connectors are rated DC – 300 MHz. The effective upper frequency of a cable assembly is limited by the lowest-rated component — either the cable or the connector. Always verify both are within spec for your target frequency.
How many times can a UHF connector be mated and unmated?
UHF Female Flange connectors are rated for approximately 500 mating cycles. Exceeding this can cause wear on the contact surfaces, increasing insertion loss and VSWR. For applications with very frequent connects and disconnects, consider a connector rated for higher cycle counts.
What torque should I use to tighten a UHF connector?
Use a torque wrench and follow the connector manufacturer's recommended torque specification. Hand-tight plus a quarter turn is a safe starting point for most push-on connectors.
Are the UHF connectors on CoaxRF assemblies weatherproof?
Our standard cable assemblies use high-quality connectors suitable for most indoor and sheltered outdoor applications. For fully weatherproof outdoor installations, we recommend applying self-amalgamating tape over the connector junction to prevent moisture ingress.
Do CoaxRF cables with UHF Female Flange connectors ship assembled and tested?
Yes. Every cable assembly — including those terminated with UHF Female Flange connectors — is hand-assembled and continuity tested before shipping. Cables ship free within the US from our US facility.