Uniden SM81 Speaker Microphone

The Uniden SM81 Speaker Microphone is the modern replacement for Uniden's HHSPM, engineered specifically for marine VHF radio operators who demand reliable two-way communication in saltwater and freshwater environments. Whether you're running a charter boat, managing a commercial fishing operation, or coordinating multi-vessel trips, this compact speaker microphone delivers the clarity and durability needed for safe, effective radio traffic on the water. Its proven design has become the standard choice for professional mariners and recreational boaters who won't compromise on communication integrity.

Built to withstand harsh marine conditions, the SM81 features weather-sealed construction that resists salt spray, moisture, and UV exposure—critical factors for equipment mounted on helm consoles or stored in cabin spaces. The integrated speaker delivers clear audio output across engine noise and wind, while the push-to-talk microphone design allows single-handed operation during critical moments at the helm. Its compact 4 x 2 x 4-inch footprint minimizes console clutter while maintaining ergonomic control and accessibility, and the lightweight 0.32-pound design ensures strain-free handling during extended duty cycles.

This microphone is ideal for upgrading legacy Uniden VHF radio installations or replacing worn original equipment on vessels equipped with compatible Uniden marine transceivers. Installation is straightforward—simple connector and cable compatibility with existing Uniden radio systems mean minimal downtime and no modification required. Boaters managing aging radio systems will find the SM81 a cost-effective solution that restores reliable communication without a full equipment overhaul, making it an essential spare or primary microphone for any serious maritime operation.