Product Description
SO-239 - UHF-Female 4-Hole Flange Panel Mount Coaxial Connector
The American Radio Supply ARS-G511 is a UHF-Female (SO-239) 4-hole panel-mount coaxial connector designed for secure installation on radio equipment, chassis panels, enclosures, antenna projects, and RF test equipment. Its robust panel-mount design provides a reliable connection for applications using UHF (PL-259) male connectors.
The ARS-G511 features a silver-plated zinc alloy body, PTFE dielectric, and a gold-plated beryllium copper center contact. The connector incorporates a large rear solder pot to accommodate larger center conductors, including those used with larger coaxial cables such as LMR-400, RG-213, and RG-8.
The UHF-Female interface incorporates 16 machined contact points designed to provide positive mechanical engagement with mating PL-259 connectors.
Key Features
- UHF-Female (SO-239) connector
- 4-hole square panel-mount flange
- Silver-plated zinc alloy body
- PTFE (Teflon) dielectric
- Gold-plated beryllium copper center contact
- Large rear solder pot for larger coaxial center conductors
- 16 machined contact points on UHF female interface
- Designed for 50-ohm coaxial systems
- Suitable for applications using LMR-400, RG-213, RG-8, and similar coaxial cables
- Rear 5/8"-24 UNEF threaded section
- Similar to Amphenol #83-R1
Technical Specifications
| Connector Type | UHF Female (SO-239) |
| Mounting Style | 4-Hole Flange Panel Mount |
| Impedance | ~50 Ω |
| Frequency Range | DC to 300 MHz |
| Termination | Large Solder Pot |
| Body Material | Zinc Alloy |
| Body Finish | Silver Plated |
| Center Contact Material | Beryllium Copper |
| Center Contact Finish | Gold Plated |
| Insulator | PTFE (Teflon) |
| UHF Interface | 16 Machined Contact Points |
| Mounting Holes | 4 × Ø3.5 mm |
| Flange Size | 25.3 × 25.3 mm |
| Mounting Hole Spacing | 18 × 18 mm |
| Rear Thread | 5/8"-24 UNEF |
| Overall Length | 27.1 mm (1.07 in.) Ref. |
| Panel Cutout | Approximately 5/8" (0.625") |
| RoHS | Compliant |
Typical Applications
- Amateur / Ham Radio Equipment
- CB Radio Equipment
- HF and lower-VHF radio equipment
- Antenna tuners and amplifiers
- SWR meters and test equipment
- Custom antenna construction
- Ground-plane and dipole antenna projects
- RF patch panels
- Custom metal chassis and equipment enclosures
- Marine and VHF communication equipment
- Coaxial cable feed-through and panel connections
Installation
The ARS-G511 is designed to mount through a panel using its four mounting holes. The square flange provides a stable mechanical mounting surface, while the rear solder pot allows the coaxial center conductor and shield connection to be soldered directly to the connector.
Listing is for one (1) ARS-G511 connector. Product images showing multiple connectors are for illustration and comparison purposes only.
Note: PTFE is commonly known by the trademarked name Teflon™. Teflon is a registered trademark of The Chemours Company and its affiliates.
Other Details
See warranty details aboveProduct Videos
Custom Field
Product Reviews
14 Reviews Hide Reviews Show Reviews
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Five Stars
I just got started in RTL-SDR (Software Defined Radio) and I saw an article where one could make (DIY) Ground Plane Antenna with radials using the SO-239 as a base. I purchased three of these connectors and I'm making my own Antennas... tuned to specific Radio Frequency. There SO-239's are a great help, they're inexpensive and just what I was wanting!
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Works Well
I would buy again.
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Well Made
Well constructed and the insulator does not melt when soldering.
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Perfect!
Excellent Quality and Fit. I ordered SO-239 panel connectors which worked perfect.
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Good Product
Its smaller than I thought but makes up for it in quality.
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Excellent
Excellent solder adhesion .
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Exceeded Expectations
Used these to make a quarter wave ground plane antenna for our club to use for demo at county fair. Well made. Got several from another vendor and they were small and poorly constructed compared to the ones I got from American Radio Supply. Everyone was impressed with the quality and kept asking me where I got them. A friend got one off me for a radio he is building. Quick shipping and well packaged. Exceeded my expectations.
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Good Quality
Good quality products and great customer service. Thanks for your vast inventory... of radio parts.
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Perfect
Perfect... No problems up to 500W
