diff --git a/readers.json b/readers.json
index ba9dcbe..13981d1 100644
--- a/readers.json
+++ b/readers.json
@@ -308,9 +308,9 @@
         "TransmitFrequencyMHz": 867.5,
         "MinimalRssi": -80,
         "ConnectedAntennaPowers": {
-          "1": 28,
-          "2": 28,
-          "3": 28
+          "1": 27,
+          "2": 27,
+          "3": 27
         }
       },
       {