Standard Horizon HX400 w/Built-In Scrambler & LMR Programmable Channels

The Standard Horizon HX400 with Built-In Scrambler & LMR Programmable Channels is a 5-watt submersible VHF handheld radio designed for boaters who demand dual-band capability and secure communication. This marine radio combines full VHF marine channel coverage with 40 programmable Land Mobile Radio (LMR) channels, making it versatile enough for commercial fishing operations, rescue coordination, and recreational offshore use where both maritime frequencies and inter-crew communication on independent channels are essential.

Built rugged for salt-water environments, the HX400 delivers 5 watts of transmission power with a submersible construction rated to withstand immersion—critical for deck work and rough seas. The integrated voice scrambler protects sensitive communications from casual monitoring, while CTCSS and DCS signaling enable selective calling on LMR channels without broadcasting to all nearby units. A noise-cancelling microphone cuts through engine and sea noise, improving clarity during high-ambient-sound operations. The optional external speaker-microphone jack allows hands-free operation and improved audio reach in crowded wheelhouses or during multi-person coordination tasks.

This radio serves commercial fleets coordinating between vessels, recreational anglers maintaining contact across multiple boats, and water-rescue personnel requiring both coast guard frequencies and internal team channels. Weekend fishermen benefit from standard VHF distress and navigation channels, while serious offshore operations rely on the LMR capability to run dedicated crew frequencies without interference from maritime traffic. The HX400's combination of marine-grade durability, frequency flexibility, and security features makes it a practical choice for buyers who need more than a basic VHF but want proven Standard Horizon reliability.