Manufacturer
<h3>KJM Marine: Built for Life on the Water</h3><p>When reliable communication and onboard safety matter most, KJM Marine delivers purpose-built products designed to handle the relentless demands of the marine environment. From coastal cruisers to offshore passagemakers, KJM has earned a reputation as a trusted source for high-performance marine electronics and safety equipment backed by real-world durability.</p><p>At the heart of the KJM lineup are its <a href="/11267-kjm-fixed-antenna-mounts-201973">fixed antenna mounts</a> and <a href="/11267-kjm-vhf-commercial-duty-antennas-202714">VHF commercial duty antennas</a> — engineered to stand up to constant sun exposure, salt spray, and the vibrations of day-in, day-out use. <strong>KJM VHF antennas</strong> are constructed for vessels ranging from small runabouts to large yachts, ensuring consistent signal quality wherever you take the boat. Every KJM antenna is backed by a 5-year warranty, giving boaters confidence in their investment long after leaving the dock.</p><p>For vessels requiring Automatic Identification System connectivity, KJM's <a href="/11267-kjm-ais-antennas-200082">AIS antennas</a> are a natural fit. Built with thick-walled fiberglass construction and compatible with standard 1"-14 thread mounts, KJM AIS antennas are well-suited for both stand-alone AIS applications and combination VHF/AIS installations using a splitter. Some models even ship with low-loss RG-8/X cable pre-attached for a clean, professional install right out of the box.</p><p>Safety is equally central to the KJM catalog. The brand's <a href="/11267-kjm-throw-bagssafety-kits-202637">throw bags and boat safety kits</a> are US Coast Guard approved, making them a reliable choice for boaters who want to stay compliant and prepared. Whether you're outfitting a small vessel under 20 feet or a mid-size cruiser, KJM's safety kits are sized and specified to meet the demands of real on-water use.</p><p>KJM Marine products are built with an understanding that the ocean is unforgiving — materials, engineering, and attention to detail all reflect that reality. Whether you're upgrading your vessel's communication system or assembling a complete safety package, KJM offers a focused lineup of quality products that serious boaters can rely on.</p>
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$76.07
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The KJM A431VB is a professional-grade 4-foot marine VHF antenna designed for reliable communication on the water. This monopole antenna features durable black fiberglass construction with a stainless steel ferrule and brass radiators for excellent corrosion resistance in harsh marine environments.
Key Features:
Compatible with standard VHF marine radios, this antenna delivers dependable performance for ship-to-ship and ship-to-shore communications. The included mounting hardware and pre-terminated cable make installation straightforward on boats, yachts, and other marine vessels.
Getting through the rough shipping calculation.
James Z
Check mark.
KENNETH R
No issues
Brandi G
Good
Richard V
Mark Y
easy and cheap
ruben m
Only place that had my radiator in stock
Dairien F
Great
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