I am glad to hear that you got your Heathkit W-4 up and running with the rest of the Heathkit components of the system your father built. Thanks for sharing your story.... Now for the rest of the story: I watched my father build this system in 1957 when I was seven, and acquired it when he passed away. It worked for a while, then quit one day. I am very happy to have it working again. Thanks again for all the help!