Practical picture
The safety questions are practical: electrical shock and fire, batteries, lightning, towers and power lines, and keeping RF exposure within the FCC limits.
T0 · Safety
T0 Safety
The safety questions are practical: electrical shock and fire, batteries, lightning, towers and power lines, and keeping RF exposure within the FCC limits.
Technician exam focus
T0 has 3 question groups and contributes 3 questions to a Technician exam — one from each group.
Subelement T0
Safety
Work through the groups below in any order. Each page teaches the idea in normal language while keeping the tested terminology recognizable.
T0A · 12 pool questions
Electrical, Lightning & Battery Safety
Hazardous voltages, fuses/breakers, grounding, electrical-code practice, lightning protection, and battery safety.
Study T0A →T0B · 11 pool questionsAntenna & Tower Safety
Tower grounding, climbing, installing antennas, guying, and safe clearances from power lines.
Study T0B →T0C · 13 pool questionsRF Exposure & Safety
RF radiation, maximum permissible exposure, duty cycle, evaluation methods, antenna proximity, and licensee responsibility.
Study T0C →Close the loop
Quiz Me on T0
Study the concepts here, then use the current public-domain Technician pool to see how they are asked on the exam.
Exam scope: NCVEC 2026–2030 Technician Class (Element 2), effective July 1, 2026 through June 30, 2030, with February 19, 2026 errata. The current NCVEC pool is the exam authority; explanatory prose here is SPARKA teaching material. NCVEC pool