Digital Antenna 876-SW 4ft AIS Antenna
Best commercial-grade antenna for reliable vessel AIS communication.
Enhance your vessel's communication with the Digital Antenna 876-SW, a robust 4-foot AIS antenna built to meet stringent USCG commercial requirements. This antenna ensures reliable signal transmission and reception with a 4.5dB gain and a low 1.5:1.0 SWR ratio across the 159-162 MHz frequency range. Crafted in the USA with powerful brass radiators and a durable high-gloss urethane finish, it's designed for maximum performance and longevity on the water, ensuring clear AIS data exchange.
$406.92
Owner Satisfaction
4.7
/ 5
Category Rank
28
/ 1324
#28 in Antennas
Price vs Category Average
+39%
Above average
Length
4
/ feet
Who it's for
- Captains prioritizing reliable vessel tracking and signal clarity
- Boaters navigating harsh saltwater and high UV environments
- Vessel owners needing a compact, high-gain antenna solution
Who should skip it
- Skippers seeking a single antenna for both voice and AIS
- Budget-conscious sailors looking for entry-level marine hardware
- Installers wanting an all-in-one kit with included mounting hardware
Performance breakdown
Signal Reliability
Optimized frequency range ensures consistent AIS data exchange in demanding conditions.
Build Durability
High-gloss urethane finish provides superior protection against harsh marine environments.
Commercial Compliance
Meets rigorous USCG standards for professional-grade vessel communication equipment.
Signal Efficiency
Low SWR ratio minimizes power loss for maximum transmission clarity.
Installation Versatility
Standard mounting options allow for straightforward integration on most vessel types.
Manufacturing Quality
Hand-assembled brass radiators reflect a commitment to precision and performance.
Key Specs
Length
4 feet
Gain
4.5 dB
Frequency Range
159-162 MHz
VSWR
1.5:1.0
Material
Fiberglass
Connector Type
UHF Female (SO-239)
Impedance
50 Ohms
Polarization
Vertical
Features
- Built to USCG commercial vessel standards
- Ensures reliable AIS communication
- High-gloss urethane finish resists wear
- Hand-assembled and tuned for peak performance
- Durable fiberglass construction
- Omnidirectional radiation pattern
- USCG Compliant
What customers say
Customers consistently praise the Digital Antenna 876 SW for its superior build quality, noting its robust construction holds up exceptionally well in demanding marine environments. Reviewers frequently highlight the antenna's reliability, emphasizing its ability to maintain strong AIS signal reception even in challenging weather conditions. This consistent performance makes it a trusted component for serious boaters who prioritize safety and long term durability. The consensus points to a premium product that justifies its cost through dependable operation.
Know before you buy
This antenna is specifically tuned for the 159-162 MHz AIS frequency range. While it may technically receive signals outside this band, it is designed to provide peak performance and the necessary SWR ratios specifically for AIS data exchange.
The 876-SW is sold as the antenna unit only. You will need to provide your own standard marine mount and coaxial cable to complete the installation.
It features a standard UHF female (SO-239) connector at the base. This is a common marine industry standard, making it compatible with most pre-terminated PL-259 cables.
The 4.5dB gain provides a balanced radiation pattern that is ideal for AIS, offering a reliable signal range of approximately 15 miles. This gain level is specifically chosen to maintain a stable connection even in moderate sea states.
Yes, it is built with high-quality fiberglass and finished with a high-gloss urethane coating. These materials are specifically selected to resist salt spray, UV degradation, and the general wear associated with commercial marine use.
No, this is a passive antenna. It does not require any electrical power to function, as it relies entirely on the signal received from your AIS transponder or receiver.
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