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wifi-htmode

About htmode (channel width)

In OpenWrt, htmode sets the Wi‑Fi “PHY mode” and channel width. The suffix (20/40/80) is the channel width in MHz:

  • HT20 / HT40: 802.11n (High Throughput).
  • VHT20 / VHT40 / VHT80: 802.11ac (Very High Throughput, 5 GHz).
  • HE20 / HE40 / HE80: 802.11ax (High Efficiency) if your wpad/hostapd build supports it.

Wider channels can increase the negotiated link rate, but they also use more spectrum and are more sensitive to interference. On crowded 2.4 GHz networks, HT20 is often more stable (and sometimes faster in real throughput) than HT40.

Omega4 note: the Wi‑Fi module is connected over SDIO 2.0, which supports up to 400 Mbps on the bus. Even if the link rate shows higher values (for example on VHT80), real throughput will be limited by the SDIO link and protocol overhead.