Furuno 1815 4kW Radar Dome Scanner Unit | RSB127-120
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Furuno 1815 — 4kW Radar Dome Scanner Unit
The RSB127-120 is the 4kW radar dome scanner unit for the Furuno 1815 radar system. A self-contained radome, it houses both the transmitter and antenna in a single weatherproof dome — making it easier to install and maintain than an open-array system while delivering reliable radar performance for coastal and offshore navigation.
With 4kW of transmit power and a 24-nautical-mile range, it provides strong target returns on other vessels, coastlines, and hazards in all weather conditions. The 24-inch dome profile keeps wind load and mounting requirements manageable on vessels where a larger open-array would be impractical. It pairs with the Furuno 1815 display unit to complete the radar system.
Note: This is the scanner/dome unit only. The Furuno 1815 display unit is required and sold separately.
Key Specifications
- Transmit Power: 4kW
- Maximum Range: 24 nautical miles
- Dome Size: 24 inches
- Rotation Speed: 24/36 RPM
- Type: Self-contained radome (transmitter + antenna)
- Compatible Display: Furuno 1815 display unit (sold separately)
- Part Number: RSB127-120
Parts Desk Insights
Best Use Case: The Furuno 1815 4kW dome is the right choice for vessels up to approximately 50 feet that need reliable, full-featured radar in a compact, easy-to-install package. The dome configuration is ideal when a radar arch or mast mount is available but space or wind load constraints make an open-array impractical. At 4kW with 24nm range, it handles coastal cruising, harbour navigation, and moderate offshore passages with confidence. If you’re building a new Furuno 1815 radar system, you’ll need both this dome unit and the 1815 display — contact the Parts Desk to confirm the correct display unit and any required cables or accessories for your installation.
Installation Note: Mount on a radar arch or mast with a clear 360-degree view. Maintain the minimum safe distance from crew areas per the installation guide — the 4kW transmitter requires a safety exclusion zone when operating.
Estimated Packaging: Carton approximately 20" × 20" × 16" (51 × 51 × 41 cm), approx. 10 kg shipped.
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.