From 3953811fb0e322519fde9c33f87810e6adfcc03a Mon Sep 17 00:00:00 2001
From: zhexu14 <64713351+zhexu14@users.noreply.github.com>
Date: Wed, 26 Aug 2026 22:45:53 +1000
Subject: [PATCH] Update logic for setting system key in ActivateBeaconCommand
 task to handle Y TACAN channel

---
 dcs/task.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dcs/task.py b/dcs/task.py
index 8ba14a8e..6d79b9a3 100644
--- a/dcs/task.py
+++ b/dcs/task.py
@@ -1209,7 +1209,7 @@ def __init__(self, channel=10, modechannel="X", callsign="TKR", bearing=True, un
                     "unitId": unit_id,
                     "modeChannel": modechannel,
                     "bearing": bearing,
-                    "system": 4 if aa else 3,
+                    "system": 5 if modechannel == "Y" else 4 if aa else 3,
                 }
             }
         }