diff --git a/readers.json b/readers.json
index f08ceaf..1e9a1a8 100644
--- a/readers.json
+++ b/readers.json
@@ -529,9 +529,9 @@
         "TransmitFrequencyMHz": 865.7,
         "MinimalRssi": -80,
         "ConnectedAntennaPowers": {
-          "1": 28,
-          "2": 28,
-          "3": 28
+          "1": 27.5,
+          "2": 27.5,
+          "3": 27.5
         }
       },
       {
@@ -542,9 +542,9 @@
         "TransmitFrequencyMHz": 867.5,
         "MinimalRssi": -80,
         "ConnectedAntennaPowers": {
-          "1": 28,
-          "2": 28,
-          "3": 28
+          "1": 27.5,
+          "2": 27.5,
+          "3": 27.5
         }
       },
       {
@@ -555,9 +555,9 @@
         "TransmitFrequencyMHz": 865.7,
         "MinimalRssi": -80,
         "ConnectedAntennaPowers": {
-          "1": 28,
-          "2": 28,
-          "3": 28
+          "1": 27.5,
+          "2": 27.5,
+          "3": 27.5
         }
       },
       {
@@ -568,9 +568,9 @@
         "TransmitFrequencyMHz": 867.5,
         "MinimalRssi": -80,
         "ConnectedAntennaPowers": {
-          "1": 28,
-          "2": 28,
-          "3": 28
+          "1": 27.5,
+          "2": 27.5,
+          "3": 27.5
         }
       },
       {
@@ -581,9 +581,9 @@
         "TransmitFrequencyMHz": 865.7,
         "MinimalRssi": -80,
         "ConnectedAntennaPowers": {
-          "1": 27,
-          "2": 27,
-          "3": 27
+          "1": 26.5,
+          "2": 26.5,
+          "3": 26.5
         }
       },
       {
@@ -594,9 +594,9 @@
         "TransmitFrequencyMHz": 867.5,
         "MinimalRssi": -80,
         "ConnectedAntennaPowers": {
-          "1": 27,
-          "2": 27,
-          "3": 27
+          "1": 26.5,
+          "2": 26.5,
+          "3": 26.5
         }
       },
       {
@@ -607,9 +607,9 @@
         "TransmitFrequencyMHz": 865.7,
         "MinimalRssi": -80,
         "ConnectedAntennaPowers": {
-          "1": 28,
-          "2": 28,
-          "3": 28
+          "1": 27.5,
+          "2": 27.5,
+          "3": 27.5
         }
       },
       {
@@ -620,9 +620,9 @@
         "TransmitFrequencyMHz": 867.5,
         "MinimalRssi": -80,
         "ConnectedAntennaPowers": {
-          "1": 28,
-          "2": 28,
-          "3": 28
+          "1": 27,
+          "2": 27,
+          "3": 27
         }
       },
       {