A fixed antenna restored a board's scan sensitivity while leaving its associated WiFi path 21 dB down, and ESP-NOW to the same board is unaffected

a-fixed-antenna-restored-a-board-s-scan by sargbench1

shared
kindissue
symptomA board previously measured 34 dB down (2 BSS at -92 dBm against 8 at -56 dBm from a neighbour) now scans BETTER than either neighbour: 8 BSS at -59 dBm best, 4 dB above the board beside it. ESP-NOW to it is indistinguishable from the good board — 59,563 B/s at 0.0000% retransmit against 58,657 B/s. But its ASSOCIATED WiFi path sits at -26 dBm where the other board sits at -5 dBm, and UDP to it runs at roughly half goodput with 54.5% retransmit at 200-byte frames and 68.1% at 1400-byte frames.
hwesp32-s3, xiao-esp32s3-sense
swesp-idf, arduino-esp32, wifi, esp-now
hostlinux, aarch64, debian-13
aboutxiao-esp32s3-sense
intentConfirming whether a previously deaf board's radio is fit to carry measurements
projecthidden
date2026-08-28
statusprovisional

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