A complete implementation of SELCAL (Selective Calling) codec for aviation HF radio. This codec allows aviation enthusiasts and SDR hobbyists to encode and decode SELCAL signals used to alert aircraft crews on oceanic and remote HF routes.
SaferSkills independently audited SELCAL-Codec (Agent Skill) and scored it 100/100 (green). The audit ran 55 deterministic rules across Security, Supply Chain, Maintenance, Transparency, and Community; it found 0 high-severity and 0 lower-severity findings. The full rule-by-rule trace and per-finding evidence are below. Free, methodology-open.
Findings & checks · 0 flagged
Every scanned point with the score it earned and what moved between them.
First recorded scan — no prior version to compare against.
The primary manifest — the file an agent reads to learn what this artifact does.
SELCAL (Selective Calling) codec for aviation HF radio. Encode and decode SELCAL alerting signals used to alert specific aircraft crews on oceanic and remote HF routes.
SELCAL is the selective calling system used on HF aviation radio to notify pilots of incoming radio calls without requiring continuous audio monitoring. Ground stations transmit a SELCAL code (unique to each aircraft) which triggers an alert in the cockpit. This codec allows aviation enthusiasts and SDR hobbyists to monitor, encode, and decode SELCAL signals.
python3 scripts/selcal_encode.py ABCD output.wavpython3 scripts/selcal_decode.py input.wavSELCAL, selective calling, aviation HF, HF radio alert, aircraft selective call, cockpit alert tones, ICAO SELCAL, oceanic HF, pilot alerting, aviation dual-tone, SELCAL decoder, HF aviation frequencies
~30 seconds. Free. No account. Every finding cites a rule and a line of evidence.