track radio signal levels, use wider bandwidth for incompatible radios

src/NodeDB.h

@@ -62,10 +62,11 @@ public:
     /// pick a provisional nodenum we hope no one is using
     void pickNewNodeNum();
 
-private:
     /// Find a node in our DB, return null for missing
     NodeInfo *getNode(NodeNum n);
 
+private:
+
     /// Find a node in our DB, create an empty NodeInfo if missing
     NodeInfo *getOrCreateNode(NodeNum n);