id: soft-modems
type: hardware
parent_stack: MainAX25-Stack (MAX25-Stack)
label: Soft Modems (MAX25-SoftModem / CRDOP)
description: |
  MAX25-SoftModem (CRDOP) — in-house sound-card modem, MAX25-Stack STANDARD.
  Development and test phase. 1200 baud+, half/full duplex.
  Acoustically AX.25/Packet-Radio compatible with TNCs and BayCom modems.
  Sound card IN/OUT + radio — use like a hardware modem.
  Good sound card required (tone accuracy; higher baud = stricter audio).
  Built and installed unless MAX25_BUILD_CRDOP=OFF.

stack_path: stacks/crdop
hybbx_plugin: crdop
hybbx_doc: ../../docs/HYBBX.md#crdop

status: active
phase: development_and_testing
shipped_default: true

protocols:
  - max25-softmodem
  - ax25-afsk-acoustic

requirements:
  sound_card: required
  baud_primary: 1200
  baud_max: 19200
  duplex: [half, full]
  coupling: [line_level, acoustic]

build:
  cmake_option: MAX25_BUILD_CRDOP
  default: ON

ctl:
  build: stacks/crdop/scripts/build-crdop.sh
  start: stacks/crdop/scripts/crdopc
  install: stacks/crdop/scripts/install-crdop.sh

devices:
  - soft-crdop

docs:
  - stacks/crdop/docs/INDEX.md
  - stacks/crdop/README.md
  - stacks/crdop/docs/SOFTMODEM.md
  - stacks/crdop/ROADMAP.md