ENUM FE_MODULATION(9)

📦 version 7.3.1, in nixpkgs unstable

✨ enum fe_modulation(9) ✨

okay bestie, welcome to the Kernel API Manual page for enum fe_modulation — it's giving "the entire constellation menu for DVB frontends" and honestly? iconic. 💅

🦋 NAME 🦋

enum fe_modulation — the type of modulation / constellation, aka which shape are we drawing the symbols in 💫

🌸 SYNOPSIS 🌸

enum fe_modulation {
    QPSK ,
    QAM_16 ,
    QAM_32 ,
    QAM_64 ,
    QAM_128 ,
    QAM_256 ,
    QAM_AUTO ,
    VSB_8 ,
    VSB_16 ,
    PSK_8 ,
    APSK_16 ,
    APSK_32 ,
    DQPSK ,
    QAM_4_NR ,
    QAM_1024 ,
    QAM_4096 ,
    APSK_8_L ,
    APSK_16_L ,
    APSK_32_L ,
    APSK_64 ,
    APSK_64_L

};

like, that's the whole roster. no cap. 👑

🎀 CONSTANTS 🎀

every single one, in order, no skips, we don't do that here 🫶

  • QPSK — QPSK modulation 💜
  • QAM_16 — 16-QAM modulation ✨
  • QAM_32 — 32-QAM modulation ✨
  • QAM_64 — 64-QAM modulation ✨
  • QAM_128 — 128-QAM modulation ✨
  • QAM_256 — 256-QAM modulation ✨
  • QAM_AUTO — autodetect QAM modulation 🔍 (the "you figure it out" option, lowkey the main character)
  • VSB_8 — 8-VSB modulation 🦋
  • VSB_16 — 16-VSB modulation 🦋
  • PSK_8 — 8-PSK modulation ⭐
  • APSK_16 — 16-APSK modulation 🌸
  • APSK_32 — 32-APSK modulation 🌸
  • DQPSK — DQPSK modulation 💫
  • QAM_4_NR — 4-QAM-NR modulation 🍓
  • QAM_1024 — 1024-QAM modulation 🔥
  • QAM_4096 — 4096-QAM modulation 🔥 (4096. she ate.)
  • APSK_8_L — 8APSK-L modulation 🌈
  • APSK_16_L — 16APSK-L modulation 🌈
  • APSK_32_L — 32APSK-L modulation 🌈
  • APSK_64 — 64APSK modulation 💖
  • APSK_64_L — 64APSK-L modulation 💖

💀 DESCRIPTION 💀

⚠️ real talk bestie: not all modulations are supported by a given standard. so don't just pick one bc the name sounds cute — check your standard first, or you're gonna have a bad time 😭

👀 SEE ALSO 👀

the whole friend group 🫶 (from the kernel file ./include/uapi/linux/dvb/frontend.h):

  • enum fe_caps(9)
  • struct dvb_frontend_info(9)
  • struct dvb_diseqc_master_cmd(9)
  • struct dvb_diseqc_slave_reply(9)
  • enum fe_sec_voltage(9)
  • enum fe_sec_tone_mode(9)
  • enum fe_sec_mini_cmd(9)
  • enum fe_status(9)
  • enum fe_spectral_inversion(9)
  • enum fe_code_rate(9)
  • enum fe_transmit_mode(9)
  • enum fe_guard_interval(9)
  • enum fe_hierarchy(9)
  • enum fe_interleaving(9)
  • enum fe_pilot(9)
  • enum fe_rolloff(9)
  • enum fe_delivery_system(9)
  • enum atscmh_sccc_block_mode(9)
  • enum atscmh_sccc_code_mode(9)
  • enum atscmh_rs_frame_ensemble(9)
  • enum atscmh_rs_frame_mode(9)
  • enum atscmh_rs_code_mode(9)
  • enum fecap_scale_params(9)
  • struct dtv_stats(9)
  • struct dtv_fe_stats(9)
  • struct dtv_property(9)
  • struct dtv_properties(9)

and that's the page!! 🌈 this little gem lives in ./include/uapi/linux/dvb, dated October 2026, and it's officially signed off by your fave kernel girlies — go read your standard docs, stay hydrated, and slay your constellation choices 💅💖✨🎀

📦 where this page comes from