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Digital Antenna 578-SW 4' AIS Antenna 4.5dB Gain White 500 Series

Manufacturer

Digital Antenna

<h3>About Digital Antenna</h3><p><strong>Digital Antenna</strong> has been a trusted name in antenna technology since 1991, earning a reputation as a leading manufacturer of high-performance marine and commercial wireless antennas. Headquartered in Sunrise, Florida, the company designs and builds its products in the USA, with a team of dedicated engineers ensuring every antenna meets rigorous standards for signal performance and durability.</p><p>What sets Digital Antenna apart is its commitment to quality at every stage of production. Each antenna is individually hand-assembled, tested, and precision-tuned before leaving the facility — a level of craftsmanship rarely seen in the industry. The result is a lineup of products trusted by recreational boaters, commercial mariners, government agencies, and land-based users alike.</p><h3>A Full Spectrum of Marine Antenna Solutions</h3><p>Digital Antenna&apos;s marine product range covers virtually every communication and navigation need on the water. Their <a href="/11252-digital-antenna-vhf-commercial-duty-antennas-202714">VHF Commercial Duty Antennas</a> are engineered to deliver maximum range and clarity for both analog and digital signals, making them a go-to choice for professional mariners and demanding recreational applications. Available in 4&apos;, 8&apos;, and 16&apos; configurations with gain options up to 10dB, these antennas are built to perform in the harshest marine environments.</p><p>For vessels equipped with Automatic Identification System technology, Digital Antenna&apos;s <a href="/11252-digital-antenna-ais-antennas-201614">AIS Antennas</a> are purpose-built to deliver maximum detection range and ultra-low VSWR — critical factors for dependable vessel tracking and USCG compliance. Many models also serve as combination VHF/AIS antennas, reducing the number of mounts and cables needed aboard.</p><p>Onboard entertainment is equally well-served. Digital Antenna&apos;s <a href="/11252-digital-antenna-amfm-stereo-antennas-200088">AM/FM Stereo Antennas</a> are designed specifically for the marine environment, delivering clear, reliable reception across 4&apos; and 8&apos; form factors suited for yachts, speedboats, T-tops, and radar arches.</p><p>The brand also offers a broader <a href="/11252-digital-antenna-antenna-1332">Antenna</a> lineup spanning cellular, 4G/5G, Wi-Fi, satellite radio, and SSB applications — covering connectivity needs far beyond traditional radio communication. Rounding out the marine accessories range, Digital Antenna&apos;s <a href="/11252-digital-antenna-fixed-antenna-mounts-201973">Fixed Antenna Mounts</a> are constructed to complement their antenna lineup, providing secure, corrosion-resistant mounting solutions built for life on the water.</p><h3>USA-Made Quality You Can Count On</h3><p>Digital Antenna uses premium materials throughout its construction process, including 316 stainless steel ferrules, soldered brass radiating elements, power-directing ferrite choke beads, and high-gloss UV-stable fiberglass finishes. Many commercial and wideband models are engineered to meet military environmental testing standards, underscoring the brand&apos;s dedication to reliability in extreme conditions. Whether you&apos;re outfitting a center console, a commercial vessel, or a land-based installation, Digital Antenna offers a solution built to last.</p>

Part Number

578-SW
06/02/2036 6:51 AM
Sale Price

$295.00

In Stock (7)

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Usually delivered within 2 days

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Product Details

The Digital Antenna 578-SW is a professional-grade 4-foot AIS (Automatic Identification System) antenna designed to meet USCG requirements for commercial vessels. Engineered specifically for AIS frequency requirements with a low 1.5:1.0 SWR ratio from 159-162 MHz, this antenna delivers 4.5dB gain for excellent performance with all AIS transponders.

Key Features:

  • 4.5dB gain for superior signal strength and range
  • Powerful brass radiators with soldered connections for reliability
  • Power-directing ferrite choke bead reduces interference
  • High-gloss urethane finish in white for UV and weather resistance
  • 316 stainless steel ferrule for corrosion resistance in marine environments
  • Standard 1"-14 threaded base for universal mounting compatibility

500 GOLD Series Installation System:

  • Gold factory-attached mini-UHF female connector for optimal conductivity
  • Includes double mini-UHF male to UHF male (PL-259) adapter
  • 25 feet of premium RG-8X marine-grade coaxial cable included
  • Tinned braid construction with foil shielding for maximum signal integrity
  • UV-stable cable jacket designed for harsh marine conditions
  • No soldering required for quick, professional installation

Proudly made in the USA, each Digital Antenna is hand-assembled, tested, and tuned to ensure maximum performance, quality, and durability. The 578-SW provides the reliable AIS reception critical for vessel safety and navigation compliance.

Good price

Quick. Decent shipping quote.

the order processes was quick and easy

So far so good. If if ship tomorrow you get five stars. Said it was in stock. And you shipped on time. great job

great deal

Great so far

Fast and easy

fast

Ordered a hitch type bike rack. Great price, and received it in 4 business days. Couldn't have been easier, couldn't be more satisfied! Great Job!

Great prices

Great price for the product, fast shipping and the people there are very helpful.

Best place to find good products for cheap. I just got a jet programmer for almost $100 below the normal price. I also appreciate the fact that they gave me a call to make sure I was the one ordering.

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