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Standard Horizon HX400 Submersible 5W Handheld VHF Radio with LMR and Voice Scrambler

Manufacturer

Standard Horizon

<h3>Standard Horizon: The Gold Standard in Marine Communication</h3><p><strong>Standard Horizon</strong> has earned its place as one of the most trusted names in marine electronics over more than five decades of innovation. <a href="/7587-standard-horizon">A subsidiary of Yaesu Musen Co., Ltd.</a> — a Japanese company with roots in commercial and amateur radio manufacturing dating back to 1959 — Standard Horizon combines deep radio engineering expertise with a laser focus on the demands of the open water. The result is a product lineup that recreational boaters, commercial mariners, and government agencies around the world have come to rely on for safety-critical communication.</p><h3>Built for the Water, Trusted on Every Voyage</h3><p>At the heart of the Standard Horizon lineup are its renowned <a href="/7587-standard-horizon-vhf-radios-handheld-202719">handheld VHF radios</a>, which have made the brand the leading manufacturer of VHF marine radios in the United States. These compact, rugged transceivers are engineered to endure the harshest marine conditions — think salt spray, accidental submersion, and the punishing vibration of a fast-moving hull. Many models meet or exceed IPX8 waterproofing standards, meaning they can survive submersion well beyond the typical splash or rain event you might encounter on the water.</p><p>Standard Horizon&apos;s <a href="/7587-standard-horizon-vhf-radios-handheld-201143">VHF radio</a> product range spans everything from ultra-compact units — some barely larger than a deck of playing cards — to full-featured models packed with GPS receivers, Digital Selective Calling (DSC), Bluetooth connectivity, NOAA weather alert channels, and FM broadcast reception. DSC capability is especially important for safety: it enables mariners to transmit an automated distress signal with precise GPS coordinates at the press of a single button, a feature that can be life-saving in an emergency.</p><h3>Why Standard Horizon Stands Apart</h3><p>The brand&apos;s commitment to engineering excellence has not gone unnoticed in the industry. Standard Horizon VHF radios have earned the prestigious NMEA (National Marine Electronics Association) award for design and engineering excellence an exceptional number of times, a testament to the brand&apos;s sustained focus on quality. Features like rapid charging, floating designs that activate a strobe light on water contact, noise-cancelling microphones, and programmable channel scanning reflect a thoughtful approach to the real-world needs of boaters — not just a checklist of specs.</p><p>Beyond radios, Standard Horizon also produces GPS chartplotters, sonar transducers, loud hailers, and a full ecosystem of accessories including remote speaker microphones, antennas, battery packs, and mounting hardware. Whether you&apos;re outfitting a weekend fishing boat, a coastal cruiser, or a commercial vessel, Standard Horizon offers the communication and navigation tools to keep you safe, informed, and connected at sea.</p><h3>A Legacy of Marine Safety</h3><p>What sets Standard Horizon apart from the competition is not just the technology inside each unit, but the philosophy behind it: every product is built as if lives depend on it — because sometimes they do. With corrosion-resistant hardware, marine-grade connectors, and robust waterproof housings, these radios are designed to perform reliably when conditions deteriorate and dependable communication matters most. For mariners who take safety seriously, Standard Horizon remains the benchmark.</p>

Part Number

HX400
05/31/2036 6:38 PM
Sale Price

$270.24

In Stock (10+)

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Usually delivered within 2 days

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Live-in-stock inventory

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Fitment guaranteed

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Product Details

The Standard Horizon HX400 is a submersible 5-watt handheld VHF marine radio designed for commercial and recreational boaters who need dual-purpose marine and land mobile communication. This rugged radio combines all USA, Canadian, and International marine channels with 40 programmable Land Mobile Radio (LMR) channels (134-174 MHz) featuring CTCSS and DCS signaling capabilities.

Key Features:

  • Submersible to JIS-8 standard (1.5 meters for 30 minutes)
  • Built-in voice scrambler for secure communications, compatible with Standard Horizon 4-code scramblers
  • Selectable transmit power: 5W, 2.5W, or 1W
  • Noise-canceling microphone for clear transmission in windy conditions
  • 40 programmable LMR channels (137-174 MHz) with CTCSS/DCS signaling
  • All USA, Canadian, and International marine channels pre-programmed
  • 10 NOAA weather channels with weather alert capability
  • Loud 700mW internal speaker for noisy environments
  • Optional speaker microphone jack for external accessories
  • Programmable channel names for easy identification
  • Multiple scanning modes: programmable scan, priority scan, and dual watch
  • Preset key for quick recall of up to 8 favorite channels
  • Channel 16 priority scan and key lock function
  • Battery life indicator with bar graph display

What's Included:

  • 2550mAh lithium-ion battery (approximately 17 hours talk time)
  • Drop-in charging cradle with 3-hour rapid charge capability
  • 110 VAC wall charger
  • 12 VDC vehicle charger
  • Heavy-duty belt clip

The HX400 is backed by Standard Horizon's industry-leading 3-year waterproof warranty, covering water damage during normal use. The commercial-grade construction and dual marine/LMR capability make this radio ideal for professional mariners, harbor masters, marine patrol, and recreational boaters who need Land Mobile Radio functionality. Note: LMR channels require appropriate FCC licensing for operation.

Products specifications

Battery Type

Lithium-ion

Waterproof

Yes

Dimensions

2 1/4" Width x 5 1/4" Height x 1 3/4" Depth

Features

Weather Alert

Battery Life

20 Hours

Scanning Modes

Programmable ScanPriority ScanDual-Watch

Transmit Power

5/2.5/1 Watt

Warranty Details

Three Years WaterproofFlat Rate

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