From 97f2ca42f12257d2916b6a779f1e1e9192eb54fc Mon Sep 17 00:00:00 2001
From: Herbenderbler <2105+herbenderbler@users.noreply.github.com>
Date: Sat, 31 Jan 2026 11:35:14 -0700
Subject: [PATCH] Fix aviation 8.33kHz step size to reduce frequency drift
 (#2950)
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Update aviation radio step size from 8330 Hz to 8333 Hz in freqman_steps
and freqman_steps_short arrays. This better represents the actual 8⅓ kHz
(25000/3 Hz) aviation channel spacing and significantly reduces frequency
drift during dial tuning.
With this fix, stepping 24 times from 123.000 MHz now correctly reaches
123.200 MHz instead of 123.199 MHz.
---
 firmware/application/freqman_db.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/firmware/application/freqman_db.cpp b/firmware/application/freqman_db.cpp
index 659e759d5..d899f979f 100644
--- a/firmware/application/freqman_db.cpp
+++ b/firmware/application/freqman_db.cpp
@@ -122,7 +122,7 @@ options_t freqman_steps = {
     {"1kHz        ", 1000},
     {"5kHz (SA AM)", 5000},
     {"6.25kHz(NFM)", 6250},
-    {"8.33kHz(AIR)", 8330},
+    {"8.33kHz(AIR)", 8333},
     {"9kHz (EU AM)", 9000},
     {"10kHz(US AM)", 10000},
     {"12.5kHz(NFM)", 12500},
@@ -144,7 +144,7 @@ options_t freqman_steps_short = {
     {"1kHz", 1000},
     {"5kHz", 5000},
     {"6.25kHz", 6250},
-    {"8.33kHz", 8330},
+    {"8.33kHz", 8333},
     {"9kHz", 9000},
     {"10kHz", 10000},
     {"12.5kHz", 12500},