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Analog: switch to OP25's noise squelch (gr310 2026-08-03) and expose squelch in config #46

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opened 2026-10-27 20:03:48 -04:00 by logan · 1 comment
logan commented 2026-10-27 20:03:48 -04:00
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OP25 gr310 added 'noise'/'voice' NBFM squelch modes on 2026-08-03, and they need no per-site calibration. Ours uses only the power squelch (nbfm_squelch_threshold, default -60), which historically left analog open with static. Our image clones gr310 unpinned and cached (#29), so it may predate that commit.

Fix: pin OP25 to a commit that includes it, set nbfm_squelch_mode=noise by default, and expose mode and threshold on the dashboard and the C2 system config. This is the cheap interim step before Trunk Recorder (see the TR issue).

OP25 gr310 added 'noise'/'voice' NBFM squelch modes on 2026-08-03, and they need no per-site calibration. Ours uses only the power squelch (nbfm_squelch_threshold, default -60), which historically left analog open with static. Our image clones gr310 unpinned and cached (#29), so it may predate that commit. Fix: pin OP25 to a commit that includes it, set nbfm_squelch_mode=noise by default, and expose mode and threshold on the dashboard and the C2 system config. This is the cheap interim step before Trunk Recorder (see the TR issue).
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area/recording-audioarea/sdr-radio
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p2
 labels 2026-10-27 20:03:48 -04:00
logan commented 2026-11-01 06:39:53 -05:00
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Node half done in a4a575e (merged as c57a5b9, PR #47): OP25 pinned to gr310 5b58335, analog defaults to nbfm_squelch_mode=noise, and mode/level are exposed on the edge dashboard and /api/listen. Still open: the C2 system config/UI for squelch.

Node half done in a4a575e (merged as c57a5b9, PR #47): OP25 pinned to gr310 5b58335, analog defaults to nbfm_squelch_mode=noise, and mode/level are exposed on the edge dashboard and /api/listen. Still open: the C2 system config/UI for squelch.
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Reference: logan/node-26#46