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Intermodulation Distortion in Hybrid LMR and LTE Sites: RF Performance Risks in Dense Public Safety Systems

RF Density Growth and Nonlinear Interaction Conditions Dense public safety RF sites are increasingly characterized by simultaneous operation of VHF, UHF, 700 MHz, 800 MHz LMR systems alongside LTE and emerging 5G infrastructure. Federal Communications Commission licensing data reflects continued growth in land mobile radio deployments, particularly in metropolitan regions where spectrum reuse and channel

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May 5, 2026 No Comments

Simulcast Solves a Coverage Problem and Creates a Precision Problem

Simulcast Solves a Coverage Problem and Creates a Precision Problem Simulcast remains one of the most efficient ways to extend wide area coverage in Land Mobile Radio. Multiple transmitter sites use the same frequency at the same time, allowing agencies to cover large service areas without assigning separate channels to every site. That architecture is

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April 17, 2026 No Comments

Why Environmental Temperature Swings Quietly Detune LMR Infrastructure

Why Environmental Temperature Swings Quietly Detune LMR Infrastructure Land Mobile Radio systems are typically designed and commissioned under controlled conditions. Once deployed, those same systems are exposed to daily and seasonal temperature swings that place constant mechanical and electrical stress on RF infrastructure. Unlike sudden failures, temperature driven changes accumulate slowly and often remain undetected

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March 23, 2026 No Comments

Why Passive Hardware Determines System Longevity

Why Passive Hardware Determines System Longevity In Land Mobile Radio systems, long term performance loss rarely originates in active electronics. Passive RF components operate continuously in the signal path and absorb the full impact of environmental stress, mechanical loading, and constant RF energy. Over time, small material or mechanical changes inside passive hardware alter insertion

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February 16, 2026 No Comments

Dynamic Frequency Retuning for LMR

How Dynamic Frequency Retuning Keeps Systems Alive Nothing fails quietly in critical communications. Problems begin as subtle shifts that are easy to overlook. The noise floor rises. Intermodulation products creep into the passband. A distant site drifts a few kilohertz off center. Filters that were once sharply tuned slowly lose rejection. None of these conditions

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February 2, 2026 No Comments

LMR, LTE, and 5G Are Redefining Communications

How LMR, LTE, and 5G Are Redefining Mission-Critical Communications  Modern public safety and enterprise networks are no longer defined by a single technology, with land mobile radio (LMR), LTE, and 5G now operating side by side. Together they form a communications framework built to outlast any one platform. The National Public Safety Telecommunications Council has

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October 30, 2025 No Comments

Simple Installation Guide for Tower-Top Amplifier Systems

Simple Installation Guide for Tower-Top Amplifier Systems Installing a tower-top amplifier (TTA) system involves more than mounting equipment and routing cables. A successful deployment requires a methodical setup, clear communication between components, and close attention to detail. This guide outlines the full step-by-step process with a focus on practical execution and long-term performance. Start with

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August 6, 2025 No Comments

How to Tune an Airline Junction Combiner

Tuning begins well before any adjustments are made; it starts with system awareness, knowing what is in place and what is being added, and what impact those changes will have on the signal environment. Airline Junction Combiners are tuned by cavity, not by system, and every cavity behaves differently depending on frequency spacing, layout, and

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July 22, 2025 No Comments

How Emergency Broadcast Systems Stay Online

How Emergency Broadcast Systems Stay Online When Everything Else Fails  Since 1963, many Americans grew up with a television or radio broadcast being interrupted every week by the Emergency Broadcast System (EBS) or the Emergency Alert System (EAS). The same could be said for Canadians who have had their Alert Ready system since 2015, as

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April 30, 2025 No Comments
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