From db679e1d965d30ce0e836e029dace3186e646786 Mon Sep 17 00:00:00 2001
From: Alexander Sholokhov <ra9yer@yahoo.com>
Date: Sat, 14 Mar 2026 09:48:34 +0700
Subject: [PATCH] fix frequency navigation in CW mode

---
 src/components/waterfall/WaterfallView.tsx | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/components/waterfall/WaterfallView.tsx b/src/components/waterfall/WaterfallView.tsx
index 616ec2c..73feb32 100644
--- a/src/components/waterfall/WaterfallView.tsx
+++ b/src/components/waterfall/WaterfallView.tsx
@@ -1635,8 +1635,8 @@ function movePassbandToTuningCenterIdx(
   centerIdx: number,
   maxSpanIdx?: number | null,
 ): Passband {
-  void mode;
-  return movePassbandToCenterIdx(settings, prev, centerIdx, maxSpanIdx);
+  const shift = (mode === 'CW') ? (prev.r + prev.l) / 2 - prev.m : 0;
+  return movePassbandToCenterIdx(settings, prev, centerIdx - shift, maxSpanIdx);
 }
 
 function freqHzToIdx(settings: WaterfallSettings, hz: number): number {