Electrical energy
Keep covers and interlocks intact, isolate power as the manual directs, and use qualified service for internal work.
General educational boundaries
Safety is a stop system
Use the cards to notice reasons to stop—not as a substitute for an assessment, manual, code, or emergency plan.
Overhead lines
Do not raise or move antennas, masts, ladders, supports, or long objects anywhere they could approach electrical lines.
Lightning and weather
Stop early, use local alerts and a preplanned threshold, move people to suitable shelter, and do not handle outdoor antenna systems during a storm.
RF exposure
An actual transmitting installation requires current FCC guidance, installation-specific information, operating controls, and qualified help. The app is not a calculator.
Batteries and heat
Stop on swelling, leaking, hissing, smoke, odor, impact damage, abnormal heat, or obstructed ventilation; follow manufacturer and local disposal guidance.
Field movement
Plan antenna movement, guy lines, cable routes, fall zones, traffic separation, bystander controls, and pack-down before energizing equipment.
Minors
A minor should not independently handle energized equipment, batteries, tools, antenna systems, or site-safety decisions.
Urgent situations
The app cannot call for help, transmit, locate a user, monitor warnings, or provide dispatch. Leave danger when possible and use established emergency services.
Professional limits
The site and app provide general education only. They are not electrical, RF-exposure, structural, engineering, legal, medical, emergency, or professional advice. Check current FCC rules, equipment manuals, property requirements, local codes, and qualified guidance for the actual situation.