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Emergency Communications Lifecycle Planning Makes Spares Documentation and RF Site Maintenance Part of Public Safety Readiness

Lifecycle Planning Has Become an Operational Requirement Emergency communications planning no longer just decides when radios should be replaced. Now it impacts inventory of spares, control of documentation, maintenance records, scheduling field service work and being able to sustain public safety communications support after acceptance. Guidance from CISA, SAFECOM and NCSWIC treats emergency communications as

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Field Service Is Becoming Part of Compliance for Public Safety Radio Coverage Systems

Field Services Compliance Has Moved Into The Operating Phase No longer considered static, public safety radio coverage systems are no longer simply “accepted” once and then ignored until there is a failure. Public safety radio coverage systems have entered buildings that are being renovated, re-arranged, leased, enlarged, and interconnected with additional radio frequency (RF) systems

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P25 Control Channel Decode Margin Loss Under Dense Broadband, BDA, and Mobile Command RF Activity

Hidden Failures of the P25 Trunked System Control Channel Public Safety Communications (PSC) agencies rely upon reliable P25 trunked system control channels for successful registration, affiliation, assignment of channel grants, and attachment to a given system resource. While the failure point is typically identified as poor voice audio quality, the first indication of a “hidden”

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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

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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

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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

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Public Safety Sites Transition From Individual Network Systems to Shared Radio Frequency (RF) Environments

Public Safety Sites Transition From Individual Network Systems to Shared Radio Frequency (RF) Environments Public safety communications have transitioned away from stand-alone local mobile radio (LMR) networks. Many agencies continue to rely on P25, analog mutual aid channels, conventional LMR channels, trunked LMR systems and dispatch center RF infrastructures for mission critical voice. At the

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LMR Feedline Moisture Intrusion and Hidden Coverage Loss in Aging Public Safety Tower Infrastructure

LMR Feedline Moisture Intrusion and Hidden Coverage Loss in Aging Public Safety Tower Infrastructure Moisture intrusion into feedlines is typically treated as a maintenance-related failure of the Feedline itself; however, in public safety lmr systems, it has evolved into a systematic coverage degradation process. Water entering coaxial transmission lines, jumper assemblies, weather sealing transition areas,

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Co-located (and) Broadband Pressure Inside Public Safety RF Sites

  Co-located (and) Broadband Pressure Inside Public Safety RF Sites In today’s growing public safety communications environment, many densely populated public safety communications sites will house both P25 LMR transmit and receive infrastructure and mission-critical broadband systems. For example, there could be commercial LTE carriers; public safety broadband equipment; microwave backhaul systems; and in-building coverage

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Antenna Isolation Degradation Between Adjacent Public Safety Arrays During Tower Loading Expansion

Tower Loading Expansion and Isolation Margin Reduction Public safety tower sites are carrying more RF systems than their original antenna plans anticipated. Regional P25 systems, conventional mutual aid channels, utility radio networks, microwave paths, cellular broadband equipment, and in building donor antennas are often added over multiple budget cycles. Each addition changes the physical and

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