Shakespeare 5421-XT 4' Black AM / FM Antenna
Manufacturer Part #: 5421-XT
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Shakespeare 5421-XT 4' Black AM/FM Marine Antenna – 5421-XT
The Shakespeare 5421-XT AM/FM Marine Antenna is a compact 4-foot antenna designed to deliver clear and consistent AM and FM radio reception on boats where space and aesthetics matter. Finished in sleek black, this antenna is ideal for modern boats, center consoles, pontoons, and cruisers looking to match dark hardware and tops.
Engineered for marine environments, the 5421-XT provides reliable broadcast radio performance while withstanding UV exposure, salt spray, moisture, and vibration. Its durable fiberglass construction ensures long service life, even in harsh conditions.
The antenna is compatible with standard marine AM/FM stereos and installs easily using common marine antenna mounts (sold separately). At 4 feet tall, it offers an excellent balance of reception quality and low-profile installation, making it a popular choice for both new installs and replacement applications.
Trusted by boaters worldwide, Shakespeare antennas are known for dependable performance and marine-grade durability.
Key Performance Features
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Extra-Tough Construction: Reinforced fiberglass radome designed for high-speed, high-vibration marine environments.
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Sleek Black Finish: High-gloss black polyurethane coating provides a modern look while protecting the fiberglass from UV damage and "blooming."
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Full-Band Reception: Optimized for both AM and FM frequencies to provide crystal-clear music and news even far from shore.
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Stainless Steel Ferrule: Equipped with a heavy-duty 1"-14 thread stainless steel mounting nut for a professional, secure fit.
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Low-Loss Cable: Includes 20 feet of RG-62 cable with a Motorola-style plug pre-installed, designed specifically for AM/FM radio signals.
Technical Specifications
| Feature | Details |
| Model Number | 5421-XT |
| Length | 4 Feet (1.2 Meters) |
| Color | High-Gloss Black |
| Material | Heavy-Duty Fiberglass |
| Mounting | 1"-14 Thread (Stainless Steel Ferrule) |
| Cable Type | 20' RG-62 |
| Connector | Motorola Plug (Standard Car-Stereo Style) |
In The Box
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1 x Shakespeare 5421-XT Black Antenna
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1 x 20-foot RG-62 Cable (Pre-attached)
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1 x Motorola Plug (Pre-installed)
Do you have a matching black VHF antenna?
To complete the look, Shakespeare makes a matching black VHF antenna (the 5400-XT-BLK) so your T-top looks symmetrical.
The Shakespeare 5421-XT 4' Black AM/FM Marine Antenna is a smart choice for boaters seeking reliable radio reception in a compact, stylish antenna design.
Manufacturer : Shakespeare
Manufacturer Part No : 5421-XT
UPC : 719441400149
Shakespeare 5421-XT 4' Black AM / FM Antenna is backordered and will ship as soon as it is back in stock.
Shakespeare 5421-XT 4' Black AM / FM Antenna
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