Coax Connectors
Representative Photo, actual item may vary
Representative Photo, actual item may vary
Lowrance 000-14476-001 H60 Wireless VHF Handset with DSC for B&G V60 Radio
Representative Photo, actual item may vary
What Are Coax Connectors and Why Do They Matter?
Coaxial connectors are the critical link between your antenna, coaxial cable, and radio — and they deserve far more attention than they typically receive. As anyone who has wrestled with a weak VHF signal on the water knows, even the best antenna system is only as strong as its weakest connection. Even the best antenna cannot compensate for signal loss caused by poor cable selection, improper installation, corrosion, or low-quality connectors. Getting the right connector — and installing it correctly — is foundational to a reliable communication system.
How Coax Connectors Work
The coaxial cable is the transmission line that carries radio frequency (RF) energy from your VHF radio to the antenna and returns received signals back to the radio. Connectors terminate each end of that cable and must form a clean, low-resistance interface to avoid degrading signal quality.
Most marine and amateur radio gear uses the so-called "UHF" connector, formally called the PL-259 for the male side and SO-239 for the female side. Typically, the SO-239 (UHF Female) is installed on the radio, and the PL-259 (UHF Male) is installed on the cable. These RF coaxial connectors feature a threaded coupling, which prevents them from being removed accidentally and enables them to be tightened sufficiently to make a good, low-resistance connection.
The quality, length, condition, and installation of your coax cable directly affect communication range, signal clarity, DSC distress transmission reliability, AIS performance, and overall marine radio effectiveness. For boaters in particular, a failed connection at sea can mean lost contact with other vessels or the coast guard — so investing in quality connectors is never optional.
What to Look for When Shopping Coax Connectors
- Impedance matching: Most television coax uses 75-ohm impedance, while marine VHF systems require 50-ohm cable. Make sure your connector is rated for the correct impedance.
- Material and plating: Gold-plated brass minimizes connector-borne signal loss and resists corrosion in wet marine environments.
- Installation method: Connectors come in solder-on, crimp, and compression/solderless styles — each with tradeoffs in ease of use and long-term reliability.
- Cable compatibility: Always match the connector to your cable type, whether it's RG-8X, RG-58/AU, RG-8/AU, or RG-213.
Top Brands in Coax Connectors
Shakespeare Antennas is one of the most trusted names in marine antenna systems, and their coax connector lineup is equally impressive. Shakespeare offers an extensive line of marine-grade connectors and adapters for antenna installations. Their patented Centerpin® solderless connectors allow boaters to make professional-quality connections without a solder iron, and gold-plated brass construction helps minimize signal loss while withstanding harsh marine environments.
Seachoice is a well-established marine hardware brand offering a broad selection of affordable coax connector solutions suitable for a wide range of boat electrical and antenna projects. Their products are a practical choice for boaters who need reliable connectors without complexity.
JR Products brings its reputation for dependable marine and RV hardware to the coax connector space, supplying components that integrate easily into onboard electronics systems for both recreational and utility applications.
Sea-Dog Line is a longtime supplier of marine hardware and deck fittings that also produces coax cable connector solutions. Sea-Dog is one of several manufacturers of coax radio antenna cables with pre-assembled PL-259 connectors on both ends, with cable lengths ranging from 2 to 50 feet.