Forgot to say: That reference to the Stenode receiver is interesting from a historical point of view. I looked at the circuit diagram for the Stenode and the Xtal filter arrangement it uses certainly looks familiar.
Lawrence. ( Edit) link to the Stenode:
http://www.antiqueradios.org/gazette/stenode.htm
Lawrence. ( Edit) link to the Stenode:
http://www.antiqueradios.org/gazette/stenode.htm
