Standard Horizon Submersible Speaker Microphone

The Standard Horizon Submersible Speaker Microphone (Model MH-73A4B) is a waterproof communication accessory engineered for HH VHF marine radios operating in demanding saltwater and high-moisture environments. This submersible speaker mic delivers clear audio transmission and reception while maintaining full water immersion capability, making it the standard choice for commercial fishing operations, coast guard applications, offshore security teams, and rescue personnel who require reliable hands-free communication in wet conditions.

The submersible design eliminates audio degradation from saltwater spray and allows uninterrupted operation during rough seas and extended water exposure. The compact form factor (5 × 3 × 7 inches) and lightweight construction (0.4 lbs) minimize bulk on tactical vests or survival gear, while the integrated microphone pickup provides consistent voice clarity across standard VHF frequencies. The speaker mic couples directly to Standard Horizon HH VHF radio units without adapter accessories, streamlining field deployment and reducing dependency on additional components.

This accessory is essential for maritime professionals, naval personnel, emergency response teams, and commercial operators who cannot accept audio failures or corrosion-related reliability losses. The submersible speaker mic bridges the gap between standard ducted mics and full radio housings, offering operators the water-resistance standards required in saltwater environments while maintaining the durability and cost-effectiveness expected of purpose-built marine communication gear. Whether mounted on a harness during deck operations or deployed from rescue vessels, the MH-73A4B provides the waterproof audio connectivity that maritime safety depends on.