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EMA (α=0.4) smooths the carrier power estimate across DSP blocks. Custom PartialEq on VchanRdsEntry excludes signal_db so rapidly-changing levels do not trigger main state SSE updates that overwrite the frequency input. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> Signed-off-by: Stan Grams <sjg@haxx.space>