From 6ee4adb9a5ab79d165dcf771734f8d1123819b08 Mon Sep 17 00:00:00 2001
From: Roman Lut <11955117+RomanLut@users.noreply.github.com>
Date: Sat, 8 Aug 2026 16:51:41 +0200
Subject: [PATCH 1/2] show rssi dbm as negative number on OSD consistently

---
 src/main/telemetry/mavlink.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/telemetry/mavlink.c b/src/main/telemetry/mavlink.c
index 6c7e130d06a..51dbbf3848d 100644
--- a/src/main/telemetry/mavlink.c
+++ b/src/main/telemetry/mavlink.c
@@ -1322,7 +1322,7 @@ static void mavlinkParseRxStats(const mavlink_radio_status_t *msg) {
             break;
         case MAVLINK_RADIO_GENERIC:
         default:
-            rxLinkStatistics.uplinkRSSI = msg->rssi;
+            rxLinkStatistics.uplinkRSSI = -msg->rssi;
             rxLinkStatistics.uplinkSNR = msg->noise;
             rxLinkStatistics.uplinkLQ = msg->rssi != 255 ? scaleRange(msg->rssi, 0, 254, 0, 100) : 0;
             break;

From 045c4d352f2f559e4d6782937eb5c5f850244d2b Mon Sep 17 00:00:00 2001
From: Roman Lut <11955117+RomanLut@users.noreply.github.com>
Date: Sat, 8 Aug 2026 17:14:33 +0200
Subject: [PATCH 2/2] handle rssi == 255

---
 src/main/telemetry/mavlink.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/main/telemetry/mavlink.c b/src/main/telemetry/mavlink.c
index 51dbbf3848d..143d636ee63 100644
--- a/src/main/telemetry/mavlink.c
+++ b/src/main/telemetry/mavlink.c
@@ -1322,9 +1322,9 @@ static void mavlinkParseRxStats(const mavlink_radio_status_t *msg) {
             break;
         case MAVLINK_RADIO_GENERIC:
         default:
-            rxLinkStatistics.uplinkRSSI = -msg->rssi;
+            rxLinkStatistics.uplinkRSSI = msg->rssi != UINT8_MAX ? -msg->rssi : 0;
             rxLinkStatistics.uplinkSNR = msg->noise;
-            rxLinkStatistics.uplinkLQ = msg->rssi != 255 ? scaleRange(msg->rssi, 0, 254, 0, 100) : 0;
+            rxLinkStatistics.uplinkLQ = msg->rssi != UINT8_MAX ? scaleRange(msg->rssi, 0, 254, 0, 100) : 0;
             break;
     }
 }