Icom SM28 Desktop Microphone with Built-in Pre-AmplifierIcom SM28 Desktop Microphone with Built in Pre Amplifier Professional Base Station Audio for IP Transceivers The Icom SM28 is a specialized desktop microphone designed to provide high clarity, base station style audio for the IP501M mobile LTE transceiver. In dispatch and administrative environments, using a handheld mobile microphone can be cumbersome for high volume communication. This desktop unit solves that ergonomic challenge by providing a

Icom SM28

Desktop Microphone with Built-in Pre-Amplifier

Professional Base Station Audio for IP Transceivers

The Icom SM28 is a specialized desktop microphone designed to provide high-clarity, base station-style audio for the IP501M mobile LTE transceiver. In dispatch and administrative environments, using a handheld mobile microphone can be cumbersome for high-volume communication. This desktop unit solves that ergonomic challenge by providing a stable, hands-free-capable interface with large, easy-to-operate switches, allowing dispatchers to manage their LTE network with the same efficiency as a traditional land mobile radio system.

Equipped with a unidirectional dynamic microphone element, the Icom SM28 is engineered to focus strictly on the operator’s voice while rejecting background noise from office equipment or other staff. The integrated pre-amplifier ensures a strong, consistent audio signal regardless of how far the operator is from the microphone head, maintaining natural voice quality across the LTE network. Built with Icom’s signature industrial durability, this microphone features a weighted base to prevent sliding during use and an IP54 weather-resistance rating, ensuring it remains a reliable tool for long-term professional service.

Key Features

• Unidirectional Dynamic Element: Focuses on the user's voice and suppresses ambient noise, ensuring transmissions are clear in busy dispatch centers.
• Built-in Pre-Amplifier: Boosts the microphone signal internally to provide a powerful and consistent audio presence on the receiver's end.
• Large PTT and Monitor Switches: Designed for heavy use, the large tactile buttons allow for effortless "Push-to-Talk" and monitoring operations.
• IP54 Ruggedized Construction: Protected against dust and splashing water, making it durable enough for industrial office settings.
• 8-Pin Modular Connector: Features a secure, plug-and-play connection designed specifically for the front panel of the IP501M.

Compatibility

Specifications

• Part Number: SM28 / SM-28
• Microphone Type: Unidirectional Dynamic
• Connector: 8-Pin Modular (RJ-45 style)
• IP Rating: IP54
• Dimensions: 70 x 169 x 167 mm
• Weight: 380 g
• Cable Length: 300 mm (11.8 in)

Benefits

• Optimized Dispatch Ergonomics: Reduces the physical strain on operators who manage radio traffic throughout an entire shift.
• Superior Voice Authority: The combination of a dynamic element and a pre-amp delivers professional-grade audio that cuts through digital noise.
• Stable Desktop Operation: The weighted base ensures the microphone stays in position even during rapid-response communication.
• Long-Term Reliability: Backed by Icom’s reputation for quality, the SM28 is built to last through hundreds of thousands of PTT cycles.

Warranty

1-year manufacturer's warranty.