Index: gr-usrp/src/db_base.py
===================================================================
--- gr-usrp/src/db_base.py	(revision 6375)
+++ gr-usrp/src/db_base.py	(working copy)
@@ -254,3 +254,10 @@
 	Should be overriden by daughterboards that care.
 	"""
 	return 0.0
+
+    def select_rx_antenna(self, which_antenna):
+        """
+        Specify which antenna port to use for reception.
+        Works for RFX boards only, so the default method does nothing.
+        """
+        pass