# Third-party notices

**CRDOP (MAX25-SoftModem)** — Copyright (c) 2026 ngteq, **GNU GPL v3** ([LICENSE](LICENSE), [../../LICENSE](../../LICENSE))

In-house sound-card modem subproject of MainAX25-Stack. Sound-card based; kernel ALSA via MAX25 sound-proxy. Project rule: [docs/CRDOP.md](../../docs/CRDOP.md).

Operators must comply with local radio regulations.

Third-party **ARDOP** host software (optional, separate from CRDOP): [plugins/external/ardop/README.md](../../plugins/external/ardop/README.md).