diff --git a/owrx/source/rtl_sdr.py b/owrx/source/rtl_sdr.py
index 64badf1..bc7c523 100644
--- a/owrx/source/rtl_sdr.py
+++ b/owrx/source/rtl_sdr.py
@@ -1,6 +1,14 @@
 from .connector import ConnectorSource
+from owrx.command import Flag
 
 
 class RtlSdrSource(ConnectorSource):
     def getCommandMapper(self):
-        return super().getCommandMapper().setBase("rtl_connector")
+        return super().getCommandMapper().setBase("rtl_connector").setMappings(
+            {
+                "bias_tee": Flag("-b")
+            }
+        )
+
+    def getEventNames(self):
+        return super().getEventNames() + ["bias_tee"]