What Limits LMR Coverage?

Land Mobile Radio (LMR) systems are person-to-person voice communication systems consisting of two-way radios which can be stationary (base station units), mobile (installed in vehicles), or portable (handheld walkie-talkies). These systems are commonly used by federal, state, and local emergency responders, public works companies, and military to support voice and low speed data communications.

LMR systems have a typical range of 3-20 miles, depending on terrain and weather. While repeaters can be used to extend this range, the systems are still limited to a relatively small geographical area.

Cost-Effective Expansion Options

Operational range and coverage can be expanded by enhancing the LMR system with JPS RoIP devices. JPS invented this technology in 2001 and has become the world standard in RoIP-based gateways. With a RoIP Gateway, agencies can expand their coverage, increase system usage, enhance capabilities, and improve interoperability.

Additionally, for applications where mobiles and portables can hear a repeater but the repeater can’t hear them, a receiver voting system is the preferred solution. The Voter will select the best quality signal from receiver sites and forward this signal to a repeater for rebroadcast or to a monitoring dispatcher, thus providing greater talk back range for the radios.

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