From 4523108293a909afb111436d8af41b679f1ba8b2 Mon Sep 17 00:00:00 2001
From: Armel FAUVEAU <armel.fauveau@globalis-ms.com>
Date: Tue, 5 May 2026 22:00:10 +0200
Subject: [PATCH] Skip spectrum curve smoothing in manual mode (issue #333)

---
 App/app/spectrum.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/App/app/spectrum.c b/App/app/spectrum.c
index 86e35c03..5cc0982b 100644
--- a/App/app/spectrum.c
+++ b/App/app/spectrum.c
@@ -1525,7 +1525,11 @@ static void BuildCurrentSpectrumTopY(uint8_t *topY)
 #endif
 
     BuildSpectrumTopY(topY, bars);
-    SmoothTopY(topY);
+    // Skip cosmetic smoothing in manual mode so the rendered curve matches
+    // the raw RSSI used by the squelch detector — narrow peaks must visibly
+    // cross the trigger line when the radio opens the squelch.
+    if (!manualSetFlag)
+        SmoothTopY(topY);
 }
 
 static void DrawStatus()