Sea-Dog UHF to BNC Handheld Radio Antenna Adapter
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Sea-Dog UHF to BNC Handheld Radio Antenna Adapter
This compact antenna adapter converts a standard UHF (SO-239) female antenna connection to a BNC male connector, allowing handheld VHF radios with a BNC antenna port to be connected to a standard marine VHF antenna cable or external antenna. A simple, essential fitting for extending the range of a handheld radio using a fixed vessel antenna.
Key Features
- UHF Female (SO-239) to BNC Male — Converts a standard marine antenna cable’s PL-259/UHF connection to the BNC connector used on most handheld VHF radios
- Compact One-Piece Design — Low-profile adapter with no cable; connects directly between the antenna cable and the radio
- Marine-Grade Construction — Corrosion-resistant materials suited for the marine environment
- Improves Handheld Range — Connecting a handheld radio to a fixed external antenna significantly increases transmit and receive range compared to the radio’s built-in stub antenna
Parts Desk Insights
Best Use Case: The ideal solution for boaters who want to use a handheld VHF radio with their vessel’s fixed external antenna — particularly useful as a backup communication setup when the fixed-mount radio is unavailable or as a primary setup on smaller vessels where a full fixed-mount radio is not installed. Simply connect this adapter to the antenna cable at the helm and plug in the handheld radio to gain the range benefit of the external antenna. Also commonly used at the nav station or in the cockpit where an antenna cable is accessible. Confirm your handheld radio uses a BNC antenna connector before ordering — some handhelds use SMA connectors instead.
Installation Notes: No tools required — hand-tighten the BNC connector onto the handheld radio and connect the antenna cable’s PL-259 to the SO-239 end. Ensure the antenna cable is disconnected from the fixed-mount radio before connecting the handheld to avoid damage. Sold individually.
Compatibility: Fits handheld VHF radios with a BNC female antenna port. Compatible with standard marine VHF antenna cables terminated with a PL-259 (UHF male) connector. Not compatible with SMA-connector handhelds — verify your radio’s antenna connector type before ordering.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.