From 8546a088a90355e17ab94489c92baea7b03e5d6e Mon Sep 17 00:00:00 2001
From: Smittix <jamessmith1@outlook.com>
Date: Thu, 26 Feb 2026 15:08:03 +0000
Subject: [PATCH] Use stable RTL IQ sample rate for Morse IQ fallback

---
 routes/morse.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/routes/morse.py b/routes/morse.py
index 6675600..2d99524 100644
--- a/routes/morse.py
+++ b/routes/morse.py
@@ -327,7 +327,9 @@ def start_morse() -> Response:
                     cmd[insert_at:insert_at] = ['-E', 'dc']
         return cmd
 
-    iq_sample_rate = 250000
+    # Use a hardware-friendly IQ rate (matches common RTL-SDR stable rates
+    # and waterfall defaults) before decimating to audio.
+    iq_sample_rate = 1024000
 
     def _build_iq_cmd(*, direct_sampling_mode: int | None) -> tuple[list[str], float]:
         # CW USB-style offset tuning: keep the configured RF frequency sounding