actually, it's better to catch the exception inside

owrx/connection.py

@@ -264,8 +264,8 @@ class OpenWebRxReceiverClient(Client):
         stack.addLayer(0, self.sdr.getProps())
         stack.addLayer(1, config)
         protected = stack.filter(*keys)
-        try:
         for key, value in params.items():
+            try:
                 protected[key] = value
             except KeyError:
                 pass