SOUNDMODEM(8)

📦 version 0.20, in debian bookworm, debian trixie, fedora 43, fedora 44, ubuntu jammy, ubuntu noble, ubuntu questing, ubuntu resolute

💖 SOUNDMODEM(8) 💖

okay bestie, sit down, hydrate, because we're about to talk about soundmodem — that's the soundcard modem driver from the Linux AX.25 Utilities Manual. section 8, yes, the big-kid sysadmin section. she's giving packet radio royalty, no cap. 👑

✨ NAME ✨

soundmodem — Soundcard modem driver 🎀

🌸 SYNOPSIS 🌸

soundmodem [ configfile ] [ -sSRM ] [-v verbosity level] [-c
configuration name]

🦋 DESCRIPTION 🦋

so soundmodem is a user mode driver for packet radio that uses a totally normal soundcard — specifically one supported by OSS/Free. like, your regular soundcard. iconic behavior honestly.

the way she integrates tightly with the kernel MKISS driver? obsessed. but bestie, listen, you have to enable CONFIG_MKISS for that to work, okay? don't come crying to me if you skipped that step. 😭

soundmodem is controlled by a configuration file, and the default filename is:

/etc/ax25/soundmodem.conf

any other name may be specified on the command line, so if you want to be a lil different, go off. 💅

💜 OPTIONS 💜

soundmodem accepts the following options:

  • -h, --help — shows you an overview of all the available command line parameters and then exits. basically the "what do I even do here" button. 🫶
  • -v level — sets the verbosity level. and 0? 0 only displays fatal errors. so if you pick 0 and then get confused why nothing is talking to you, that's literally on you bestie. 💀
  • -c configname — use the named configuration. if it's absent, the first one is taken. first come first served, periodt. ⭐
  • -s — log messages to syslog instead of standard out. for when you want your drama to live in the logs instead of your terminal. 🎀
  • -S — disables the use of SIMD instructions (aka MMX, VIS, etc). old-school vibes only, no fancy vectorization. 🌈
  • -R — run with realtime scheduling (SCHED_RR). > ⚠️ use with caution. fr fr, she means it — this one is main character energy and it does not play. 🔥
  • -M — lock memory down in RAM; this disables swapping soundmodem out. she stays. always. 💅

👑 SEE ALSO 👑

ifconfig (8), soundmodemconfig (8)

🍓 AUTHOR 🍓

soundmodem was written by Thomas Sailer, HB9JNX/AE4WA (sailer@ife.ee.ethz.ch). absolute legend, we stan. 🫶

and that's the whole page, bestie! 💖 this was SOUNDMODEM version 0.2, dated 1 August 2000 — yeah, she's vintage and she still slays. go forth and packet radio responsibly. mwah. ✨🎀🦋💅

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