Furuno CX4-3 Marine VHF Whip Antenna
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You have 30 days to request a return. All sale items are final sale.
Furuno CX4-3 — Marine VHF Whip Antenna
The CX4-3 is a marine VHF whip antenna built for reliable voice communications, DSC distress calling, and AIS reception across the VHF marine band. Designed for use with Furuno VHF radiotelephone systems, it delivers 3dB of gain in a durable fibreglass construction with stainless steel hardware — built to withstand the UV exposure, salt spray, and vibration of the marine environment.
Covering the full 156–163 MHz VHF marine band, it supports all standard marine VHF channels including Channel 16 (international distress and calling), weather channels, and working channels for vessel-to-vessel and vessel-to-shore communications.
Key Specifications
- Type: VHF whip antenna
- Frequency Range: 156–163 MHz (VHF marine band)
- Gain: 3dB
- Construction: Fibreglass with stainless steel hardware
- Compatible Systems: Furuno FM-4800 and FM-4900 series VHF radiotelephones
- Part Number: CX4-3
Parts Desk Insights
Best Use Case: The CX4-3 is the correct replacement or upgrade antenna for Furuno FM-4800 and FM-4900 series VHF radiotelephones. It’s also a solid choice for any vessel running a Furuno VHF system where the original antenna has been damaged or degraded — a common issue on boats where the antenna has been exposed to years of UV and salt without replacement. VHF antenna condition directly affects communication range; a degraded antenna can cut your effective range significantly even if the radio itself is functioning normally. If you’re experiencing reduced range or poor audio quality on your VHF, replacing the antenna is the first and lowest-cost diagnostic step. Confirm your VHF radio model is compatible with the CX4-3 before ordering.
Installation Note: Mount as high as possible with a clear line of sight in all directions for maximum range. VHF is line-of-sight — antenna height is the single biggest factor in communication range. Use quality coaxial cable and weatherproof all connections.
Estimated Packaging: Long box approximately 36" × 4" × 4" (91 × 10 × 10 cm), approx. 0.7 kg shipped. Oversized shipping rates may apply.
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.