PSRA Level 1 Exam study guide
PSRA Level 1 Exam · Work through your exam, one topic at a time.
The PSRA Level 1 Exam, sometimes called Public Safety Radio Analyst Level 1, is a multiple-choice credential aimed at people who work with, or want to move into, the technical and analytical side of public safety land mobile radio. That includes radio system technicians and analysts, dispatch and communications-center staff who need to understand what sits behind their consoles, interoperability coordinators, and IT or emergency-management personnel who support communications planning. The PSRA Level 1 Exam study guide has 9 sections and about 3,291 words.
01Radio Frequency Fundamentals and Spectrum Concepts
Domain 1 asks you to move confidently between watts, dBm, dBd, dBi and ERP, and to explain why a portable hears a site at one distance but not another. Expect unit conversions, bandwidth calculations and items that hinge on the difference between transmitter power and radiated power.
409 words, about 2 min02Public Safety Land Mobile Radio Systems and Architectures
Domain 2 covers how a public safety call is actually delivered: P25 standards, conventional versus trunked operation, simulcast, degraded modes and the capacity maths that decides whether a busy hour produces bonks. P25 is the TIA-102 family.
369 words, about 2 min03Interoperability, Standards, and National Frameworks
Domain 3 tests the frameworks that let agencies on different bands, vendors and jurisdictions talk: SAFECOM guidance, NPSTC products, NIMS/ICS communications roles and the national interoperability channels. The SAFECOM Interoperability Continuum has five lanes: governance, standard operating procedures, technology, training and exercises, and usage.
356 words, about 2 min04Radio Site, Coverage, and RF Propagation Analysis
Domain 4 moves from link budgets to coverage acceptance: how sites are designed, how coverage is predicted and measured, and how in-building and simulcast problems are diagnosed. Public safety coverage is normally specified as 95% of the service area at Delivered Audio Quality 3.4, measured separately for talk-out (site to portable) and talk-in (portable to site).
379 words, about 2 min05Licensing, Frequency Coordination, and Regulatory Compliance
Domain 5 covers the paperwork and physics of lawful operation: FCC Part 90 authorisations, station classes, emission designators, coordination bodies and the technical limits written into a licence. Public safety land mobile operates under 47 CFR Part 90.
376 words, about 2 min06Network Monitoring, Diagnostics, and Performance Analysis
Domain 6 asks how you prove a system is healthy and how you localise a fault quickly, from SNMP traps and site alarms to channel-loading statistics and audio-quality scores. Two monitoring layers: fault management (alarms, SNMP v3 traps, syslog, site power, generator, battery, temperature, door, tower light) and performance management (KPIs trended against a baseline).
346 words, about 2 min07Cybersecurity and Communications Security for Public Safety Radio
Domain 7 covers protecting confidentiality, integrity and availability of public safety radio: P25 encryption and key management, network segmentation, device hardening and the policy around them. P25 link-layer encryption uses AES-256 as the current standard, with legacy DES-OFB still present in older fleets.
363 words, about 2 min08Incident Support, Operational Procedures, and Documentation
Domain 8 is the operational paper trail: how communications are planned inside ICS, who fills which role, and what documentation protects the agency afterwards. Communications sit inside NIMS/ICS as the Communications Unit, led by the COML and staffed by COMTs, the INCM, RADOs and AUXCOMM volunteers.
343 words, about 2 min09Emerging Technologies and System Modernization
Domain 9 examines how agencies modernise: P25 evolution, broadband and FirstNet, mission-critical services, IP and cloud backhaul, and the lifecycle discipline of testing and cutover. Moving from P25 Phase 1 (FDMA, 12.5 kHz) to Phase 2 (two-slot TDMA, 6.25 kHz equivalent) is a capacity play.
350 words, about 2 min