diff --git a/owrx/source/__init__.py b/owrx/source/__init__.py
index 781db97..ba70737 100644
--- a/owrx/source/__init__.py
+++ b/owrx/source/__init__.py
@@ -38,7 +38,7 @@ class SdrSource(ABC):
         # layer 0 reserved for profile properties
         self.props.addLayer(1, props)
         self.props.addLayer(2, Config.get())
-        self.rtlProps = self.props.filter(*self.getEventNames())
+        self.sdrProps = self.props.filter(*self.getEventNames())
 
         self.profile_id = None
         self.activateProfile()
@@ -84,7 +84,7 @@ class SdrSource(ABC):
         pass
 
     def wireEvents(self):
-        self.rtlProps.wire(self.onPropertyChange)
+        self.sdrProps.wire(self.onPropertyChange)
 
     def getCommand(self):
         return [self.getCommandMapper().map(self.getCommandValues())]
@@ -130,7 +130,7 @@ class SdrSource(ABC):
         return self.port
 
     def getCommandValues(self):
-        dict = self.rtlProps.__dict__()
+        dict = self.sdrProps.__dict__()
         if "lfo_offset" in dict and dict["lfo_offset"] is not None:
             dict["tuner_freq"] = dict["center_freq"] + dict["lfo_offset"]
         else:
diff --git a/owrx/source/connector.py b/owrx/source/connector.py
index c626506..d365b4b 100644
--- a/owrx/source/connector.py
+++ b/owrx/source/connector.py
@@ -45,10 +45,10 @@ class ConnectorSource(SdrSource):
             return
         if (
             (prop == "center_freq" or prop == "lfo_offset")
-            and "lfo_offset" in self.rtlProps
-            and self.rtlProps["lfo_offset"] is not None
+            and "lfo_offset" in self.sdrProps
+            and self.sdrProps["lfo_offset"] is not None
         ):
-            freq = self.rtlProps["center_freq"] + self.rtlProps["lfo_offset"]
+            freq = self.sdrProps["center_freq"] + self.sdrProps["lfo_offset"]
             self.sendControlMessage("center_freq", freq)
         else:
             self.sendControlMessage(prop, value)
diff --git a/owrx/source/direct.py b/owrx/source/direct.py
index a2b26ec..904d2ea 100644
--- a/owrx/source/direct.py
+++ b/owrx/source/direct.py
@@ -23,7 +23,7 @@ class DirectSource(SdrSource, metaclass=ABCMeta):
         ]
 
     def getNmuxCommand(self):
-        props = self.rtlProps
+        props = self.sdrProps
 
         nmux_bufcnt = nmux_bufsize = 0
         while nmux_bufsize < props["samp_rate"] / 4: