STANDARD HORIZON VERTEX HX400 RADIO – Rugged Marine VHF by SEANAV
Looking for a tough, reliable, and fully submersible marine VHF radio? The Standard Horizon Vertex HX400 is one of the most trusted handheld VHF radios for commercial and recreational vessels. At SEANAV, we offer professional supply, programming, servicing, and accessories for the HX400 model – ensuring top performance and reliability on the water.

Why Choose the Vertex HX400 VHF Radio?
With a 5-watt transmit power and clear audio output, the Vertex HX400 ensures crisp communication even in the harshest marine environments. It’s IPX8 waterproof rated, floats with optional accessories, and provides NOAA weather alerts. The large capacity 2300mAh battery delivers over 17 hours of operation – ideal for long missions or offshore trips.
- 5W VHF marine handheld radio
- IPX8 submersible rating
- Built-in NOAA weather alerts
- Long battery life – 2300mAh Lithium-ion
- Programmable channel scanning and dual watch
- PC programmable via optional USB cable
SEANAV – Your Marine Communication Partner
SEANAV provides full support for the Standard Horizon HX400 including setup, programming, antenna compatibility, and repairs. Whether for SOLAS-approved fleets or leisure crafts, we ensure your radio meets compliance and performs reliably at sea.

Frequently Asked Questions (FAQ)
1. Is the HX400 suitable for commercial use?
Yes, it’s used in both commercial and recreational maritime applications due to its durability and features.
2. Does it float in water?
It does not float by default but can float with optional flotation accessories.
3. How long does the battery last?
Over 17 hours with the supplied 2300mAh lithium-ion battery.
4. Can I program private channels?
Yes, the HX400 is PC-programmable with optional software and cable.
5. Does it have a noise-canceling microphone?
Yes, it features a built-in noise-canceling microphone for clear communication.
6. What’s included in the box?
The HX400 comes with battery, antenna, charger, belt clip, and user manual.
7. Is the radio waterproof?
Yes, it meets IPX8 standards – submersible up to 1.5 meters for 30 minutes.
8. Can SEANAV repair HX400 radios?
Yes, we offer diagnosis, repair, and replacement of faulty components.
9. Is it compatible with external microphones?
Yes, it supports speaker microphones and headsets via a waterproof connector.
10. Can I order accessories from SEANAV?
Yes, we supply batteries, antennas, clips, chargers, and cables for the HX400.
11. Does it support DSC?
No, the HX400 does not have Digital Selective Calling (DSC) capability.
For dependable VHF communication offshore or in port, trust the Standard Horizon HX400 – supported and supplied by SEANAV, your expert marine electronics partner.
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