Workbench
A custom rotary selector makes the app's architecture visible. Progress indicators show only local reviewed-card state.
Detailed feature guide
Seven instrument drawers
Each module supports a different part of the learning and preparation sequence.
Signal Concepts
Sixteen lessons cover signal energy, frequency as a rate, wavelength, paths, noise, interference prevention, listening, modes, occupied bandwidth, minimum power, control, identification, clarity, and source currency.
Practice Console
Eight fictional, preset-only drills move through Brief, Listen, Format, Verify, Close, and Complete. No names, callsigns, locations, microphone input, recording, or live transmission appear.
Bench Check
Twelve cards guide a power-off inspection of the surface, power source, fuse path, connectors, cable strain, grounding references, controls, audio level, cooling, tools, labeling, and shutdown.
Field Board
Twelve mapless prompts organize permission, line clearance, weather stop points, stable surfaces, bystander space, cable routes, moisture, power isolation, lighting, receive-first observation, leave-no-trace, and pack-down.
Safety Lock
Fourteen hard stops address electrical energy, overhead lines, lightning, RF exposure, batteries, antenna movement, trips, heat, hearing, roadways, minors, emergencies, skill limits, and rechecks after change.
Rules and sources
Ten dated Part 97 principles and five source records reinforce that the current FCC, eCFR, equipment documentation, site rules, and qualified guidance outrank an offline summary.