Call +1-866-442-TXRX(8979)
Facebook Twitter Youtube Linkedin

Blog

AI Video, Drone Telemetry, and Incident Broadband Cells Increasing Temporary RF Noise Exposure Around P25 Command Post Receive Paths

Incident broadband load becomes the receive path problem Incident scenes today have more transmitters than there are frequency slots in the static LMR plans. In addition to P25 portable repeaters and interoperability gateways, incident scenes have vehicular routers, body camera docks, unmanned aircraft controllers, broadband modems, satellite terminals, temporary LTE or 5g cells, etc. In

Read More »
July 9, 2026 No Comments

Satellite to Cellular Public Safety Coverage Extensions and RF Coexistence Pressure Around Ground Based LMR Gateway Sites

Satellite Access Moves to a Public Safety Coverage Layer The new FCC framework for supplemental coverage from space (SCS) allows satellite and terrestrial operators to utilize terrestrial mobile spectrum via defined authorizations and interference protection. This framework utilizes FirstNet licensed 700 MHz public safety BroadBand spectrum, often referred to as Band 14, for SCS purposes

Read More »
July 7, 2026 No Comments

Code Driven Coverage Expansion and RF Density

Code Driven Coverage Expansion and RF Density Radio Frequency (RF) emergency responder communication coverage systems have evolved from an infrequent special purpose installation to a standard component of public safety communications planning in new buildings, renovated facilities, tunnels, campuses, hospitals, schools, high-rise structures, and hardened public venues. The International Fire Code utilizes emergency responder communication

Read More »
June 19, 2026 No Comments

Cavity Filter Thermal Drift Effects on Adjacent Channel Rejection in High Duty Cycle LMR Sites

Thermal Stress in Modern Public Safety RF Sites High duty cycle LMR sites increasingly operate inside shared RF environments that combine P25 trunked systems, conventional mutual aid channels, utility radio systems, microwave equipment, and broadband public safety services. The result is a higher continuous RF load on passive infrastructure than many legacy sites were originally

Read More »
May 26, 2026 No Comments

Multicoupler Dynamic Range Compression in High Density Public Safety Receive Sites Under Hybrid LMR and Broadband Loading

Multicoupler Dynamic Range Compression in High Density Public Safety Receive Sites Under Hybrid LMR and Broadband Loading Public safety receive sites were historically engineered around predictable LMR channel loading, controlled antenna distribution, and relatively stable adjacent site conditions. That assumption is weakening as regional systems combine P25 trunking, conventional interoperability channels, public works LMR, utility

Read More »
May 19, 2026 No Comments

How Minor Infrastructure Changes Quietly Break LMR System Assumptions

LMR Systems Are Designed on Fixed Assumptions Every Land Mobile Radio system is designed around a specific set of physical and electrical assumptions. Antenna placement, feedline length, grounding paths, isolation margins, and load characteristics are all treated as stable variables during engineering and acceptance testing. Once the system is placed into service, those assumptions are

Read More »
March 30, 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

Read More »
February 2, 2026 No Comments

The Art of the Invisible Network

The Art of the Invisible Network Walk through an airport, a hospital, a stadium, or a university campus and a quiet paradox appears. Everyone is connected, yet the infrastructure that makes that connection possible is nowhere to be seen. There are no exposed radios, no tangled cables, no obvious antennas drawing attention to themselves. The

Read More »
January 13, 2026 No Comments

Designing Multi-Agency Networks for Seamless Emergency Response

Designing Multi-Agency Networks for Seamless Emergency Response When emergencies unfold, dozens of agencies move toward the same problem. Police, fire, EMS, and utility crews each bring their own communication systems, built for separate missions. During the first hours of a disaster, those divides make coordination difficult. The technology behind these networks has grown independently for

Read More »
November 13, 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

Read More »
July 22, 2025 No Comments
Facebook Twitter Youtube Linkedin

Most Popular:

Scroll to Top