Hangar Academy
The Toolbox
A free technical reference library for aviation, marine, and electronics professionals. Calculators, frequency charts, troubleshooting guides, standards, and formulas — all in one place.
Free — no account requiredCalculators
RF, electrical, fiber optics, radar, aerospace, and metrology calculators organized by discipline.
📻Frequency Reference
Aviation, marine, amateur radio, personal radio, emergency/SAR, and telemetry frequencies.
📊Quick Reference Charts
Resistor color code, wire gauge, coax types, RF connectors, battery chemistry, and more.
🔧Troubleshooting Guides
Symptom-based diagnostic guides for marine, aviation, RF, fiber optics, drone, and rocketry systems.
📋Standards & Specs
FCC, FAA, IEC, NAR, and industry specifications for marine, aviation, RF, fiber, and more.
📐Formula Reference
Ohm's Law, power, reactance, dB, time constants, RADAR range, antenna length, and more.
📖Glossary
Aviation and marine electronics terminology. 280+ definitions across RF, electrical, fiber optics, avionics, drone, rocketry, and amateur radio.